ADAS audio automotive availability estimation business cloud consumer electronics context-aware deep learning digital TV education functional safety gaming HMI human detection ieeexplore image processing infotainment internet of things keynote lighting control market research networks recommendation RSSI smart homes software framework user experience user interface user monitoring
22 entries (M: 61.5)
2016 |
Kukolj, Dragan; Đorđević, Dragana; Bjelica, Milan Z; Milošević, Milena Method for determining the emotional state of the user due to the visual impact PatentPendingM94 P-2016-1174, 2016, (Pending). Abstract | Links | BibTeX | Tags: consumer electronics, context-aware, user experience, user interface, user monitoring @patent{Kukolj2016, title = {Method for determining the emotional state of the user due to the visual impact}, author = {Dragan Kukolj and Dragana Đorđević and Milan Z. Bjelica and Milena Milošević}, url = {https://worldwide.espacenet.com/publicationDetails/biblio?II=0&ND=3&adjacent=true&locale=en_EP&FT=D&date=20180629&CC=RS&NR=20161174A1&KC=A1}, year = {2016}, date = {2016-12-01}, number = {P-2016-1174}, abstract = {Method for determining the emotional state of the user due to the visual impact, wherein the method comprises the steps of (100) acquisition of physiological data with the help of at least one biosensor (200), step (101) preprocessing of data collected with the help of the processing unit (201), where are obtained internal features, step (102) forwarding the features in a database (202) on the cloud and to the entrance of the prediction model (203), which is also on the cloud, has for a novelty that the said prediction model (203) is an adaptive algorithm consisted of two phases, wherein the first stage of the model is step (103) of applying of the internal model characteristics obtained after step (101), and a result are predicted pseudo characteristics based on internal characteristics of physiological signals, and the second phase is presented by step (104) of determining the current emotional state based on previously obtained predicted pseudo characteristics, but also on the basis of previously obtained internal characteristics of physiological signals, step (105) of sending the resulting state in the database (202) on the cloud as a reference state for the previous sent internal features, and step (106) the transformation of the emotional state of the user to the appropriate recommendation for action.}, howpublished = {M94}, note = {Pending}, keywords = {consumer electronics, context-aware, user experience, user interface, user monitoring}, pubstate = {published}, tppubtype = {patent} } Method for determining the emotional state of the user due to the visual impact, wherein the method comprises the steps of (100) acquisition of physiological data with the help of at least one biosensor (200), step (101) preprocessing of data collected with the help of the processing unit (201), where are obtained internal features, step (102) forwarding the features in a database (202) on the cloud and to the entrance of the prediction model (203), which is also on the cloud, has for a novelty that the said prediction model (203) is an adaptive algorithm consisted of two phases, wherein the first stage of the model is step (103) of applying of the internal model characteristics obtained after step (101), and a result are predicted pseudo characteristics based on internal characteristics of physiological signals, and the second phase is presented by step (104) of determining the current emotional state based on previously obtained predicted pseudo characteristics, but also on the basis of previously obtained internal characteristics of physiological signals, step (105) of sending the resulting state in the database (202) on the cloud as a reference state for the previous sent internal features, and step (106) the transformation of the emotional state of the user to the appropriate recommendation for action. |
2013 |
Mrazovac, Bojan; Todorović, Branislav; Bjelica, Milan Z; Kukolj, Dragan Reaching the next level of indoor human presence detection: An RF based solution ConferenceM33 Telecommunication in Modern Satellite, Cable and Broadcasting Services (TELSIKS), 2013 11th International Conference on, IEEE, Nis, Serbia, 2013, ISBN: 978-1-4799-0899-8. Abstract | Links | BibTeX | Tags: human detection, ieeexplore, RSSI, user monitoring @conference{Mrazovac2013b, title = {Reaching the next level of indoor human presence detection: An RF based solution}, author = {Bojan Mrazovac and Branislav Todorović and Milan Z. Bjelica and Dragan Kukolj }, doi = {10.1109/TELSKS.2013.6704936}, isbn = {978-1-4799-0899-8}, year = {2013}, date = {2013-10-16}, booktitle = {Telecommunication in Modern Satellite, Cable and Broadcasting Services (TELSIKS), 2013 11th International Conference on}, publisher = {IEEE}, address = {Nis, Serbia}, abstract = {The presence of a human in the vicinity of radio transceivers results in radio signal strength variations at the receiver's input. Therefore, human presence in an indoor environment can be recognized by analyzing and quantifying irregularities in the radio signature. In order to quantify the information in terms of human presence, we present a novel human presence detection method based on information entropy extracted from a sequence of received signal strength samples. As opposed to existing smart home solutions that incorporate a complex set of sensors for human detection, the proposed method is solely based on radio irregularity phenomenon, without modifying the original environment. An additional level of sensor intelligence is introduced without sensors and installation costs, or specific training procedures for end-consumers.}, howpublished = {M33}, keywords = {human detection, ieeexplore, RSSI, user monitoring}, pubstate = {published}, tppubtype = {conference} } The presence of a human in the vicinity of radio transceivers results in radio signal strength variations at the receiver's input. Therefore, human presence in an indoor environment can be recognized by analyzing and quantifying irregularities in the radio signature. In order to quantify the information in terms of human presence, we present a novel human presence detection method based on information entropy extracted from a sequence of received signal strength samples. As opposed to existing smart home solutions that incorporate a complex set of sensors for human detection, the proposed method is solely based on radio irregularity phenomenon, without modifying the original environment. An additional level of sensor intelligence is introduced without sensors and installation costs, or specific training procedures for end-consumers. |
Bjelica, Milan Z; Mrazovac, Bojan; Papp, Ištvan; Teslić, Nikola Context-Aware Platform with User Availability Estimation and Light-based Announcements Journal ArticleM21a IEEE Transactions on Systems, Man, and Cybernetics: Systems, 43 (5), pp. 1228 - 1239, 2013, ISSN: 2168-2216. Abstract | Links | BibTeX | Tags: availability estimation, context-aware, ieeexplore, internet of things, lighting control, smart homes, software framework, user monitoring @article{tsmc1, title = {Context-Aware Platform with User Availability Estimation and Light-based Announcements}, author = {Milan Z. Bjelica and Bojan Mrazovac and Ištvan Papp and Nikola Teslić}, doi = {10.1109/TSMC.2012.2235425}, issn = {2168-2216}, year = {2013}, date = {2013-09-01}, urldate = {2019-01-23}, journal = {IEEE Transactions on Systems, Man, and Cybernetics: Systems}, volume = {43}, number = {5}, pages = {1228 - 1239}, abstract = {As the number of computer-based systems and consumer gadgets is growing, users are becoming increasingly overwhelmed by the requests for attention coming from this variety of devices. In addition, technology has quickened the pace of life and work to the extent that interaction between people has become more frequent. Dealing with both social and device-driven interruptions has become one of the important goals of context-aware systems of today. This paper proposes a context-aware platform that can help mitigate the negative effects of interruptions in human work and living. The platform uses a scalable set of sensors to estimate user availability in the home or office environment. This information is announced to possible interrupters (e.g., household members and software application) by using a web portal, lighting effects, or interfaces to a home automation system or any other interested entity in the local network. This paper presents several contributions to the field. Platform architecture is considered scalable enough to fit to a variety of today's consumer devices and smart home systems. The experiments were conducted to show the effectiveness of the platform usage within a living room area, as opposed to the traditional office contexts where the availability tends to be easier to determine. The last contribution is related to the novel method and the evaluation of the use of lighting announcements of availability instead of the traditional inefficient busy flags.}, howpublished = {M21a}, keywords = {availability estimation, context-aware, ieeexplore, internet of things, lighting control, smart homes, software framework, user monitoring}, pubstate = {published}, tppubtype = {article} } As the number of computer-based systems and consumer gadgets is growing, users are becoming increasingly overwhelmed by the requests for attention coming from this variety of devices. In addition, technology has quickened the pace of life and work to the extent that interaction between people has become more frequent. Dealing with both social and device-driven interruptions has become one of the important goals of context-aware systems of today. This paper proposes a context-aware platform that can help mitigate the negative effects of interruptions in human work and living. The platform uses a scalable set of sensors to estimate user availability in the home or office environment. This information is announced to possible interrupters (e.g., household members and software application) by using a web portal, lighting effects, or interfaces to a home automation system or any other interested entity in the local network. This paper presents several contributions to the field. Platform architecture is considered scalable enough to fit to a variety of today's consumer devices and smart home systems. The experiments were conducted to show the effectiveness of the platform usage within a living room area, as opposed to the traditional office contexts where the availability tends to be easier to determine. The last contribution is related to the novel method and the evaluation of the use of lighting announcements of availability instead of the traditional inefficient busy flags. |
Mrazovac, Bojan; Kukolj, Dragan; Samardzija, Dragan; Bjelica, Milan Z; Todorović, Branislav A method for human presence detection and zonal human subject localization in wireless sensor networks based on distributed processing of Shannon entropy in the signal strength space PatentM92 P-2013/0027, 2013. Abstract | Links | BibTeX | Tags: networks, RSSI, user monitoring @patent{Mrazovac2013b, title = {A method for human presence detection and zonal human subject localization in wireless sensor networks based on distributed processing of Shannon entropy in the signal strength space }, author = {Bojan Mrazovac and Dragan Kukolj and Dragan Samardzija and Milan Z. Bjelica and Branislav Todorović}, url = {https://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20140630&DB=&locale=en_EP&CC=RS&NR=20130027A1&KC=A1&ND=4}, year = {2013}, date = {2013-01-28}, number = {P-2013/0027}, abstract = {The presented invention significantly improves the existing ambient intelligence solutions through the synthesis of radio-communication protocols and advanced statistical techniques for the radio signals processing, in order to detect human presence without the use of conventional sensor solutions. The method exploits the fact that the human body interferes with radio signals by introducing irregularities in the radio signature which indicate possible human presence, given in a form of received signal strength indicator's (RSSI) variations. According to this phenomenon, a human presence can be detected within a specific area, or in a particular zone, by providing the information to the system for unobtrusive interaction with the human subject in real-time. The idea is to apply the presented method for human presence detection to the network of novel, commercially available wireless LED bulbs, which are comprised of an embedded IEEE 802.15.4 transceiver module for wireless communication with other wireless devices. The proposed algorithm for human presence detection is implemented as a software module that can be easily incorporated into a variety of wireless systems (including the aforementioned smart LED bulbs, or any other wireless nodes) without high processing and memory loads of the system's resources. By incorporating the presented method, the original functionality of the wireless devices is extended with the possibility of device-free presence detection, which can be used for various ambient intelligence applications with very low installation costs. By applying the statistical techniques for signal processing, such as Shannon's information Entropy, combined with the incremental algorithm for extracting the principal components of the matrix of radio links (Candid Covariance-free Incremental Principal Component Analysis - CCIPCA), the implemented method can be integrated into any network of wireless devices, including the devices with low-power processing resources.}, howpublished = {M92}, keywords = {networks, RSSI, user monitoring}, pubstate = {published}, tppubtype = {patent} } The presented invention significantly improves the existing ambient intelligence solutions through the synthesis of radio-communication protocols and advanced statistical techniques for the radio signals processing, in order to detect human presence without the use of conventional sensor solutions. The method exploits the fact that the human body interferes with radio signals by introducing irregularities in the radio signature which indicate possible human presence, given in a form of received signal strength indicator's (RSSI) variations. According to this phenomenon, a human presence can be detected within a specific area, or in a particular zone, by providing the information to the system for unobtrusive interaction with the human subject in real-time. The idea is to apply the presented method for human presence detection to the network of novel, commercially available wireless LED bulbs, which are comprised of an embedded IEEE 802.15.4 transceiver module for wireless communication with other wireless devices. The proposed algorithm for human presence detection is implemented as a software module that can be easily incorporated into a variety of wireless systems (including the aforementioned smart LED bulbs, or any other wireless nodes) without high processing and memory loads of the system's resources. By incorporating the presented method, the original functionality of the wireless devices is extended with the possibility of device-free presence detection, which can be used for various ambient intelligence applications with very low installation costs. By applying the statistical techniques for signal processing, such as Shannon's information Entropy, combined with the incremental algorithm for extracting the principal components of the matrix of radio links (Candid Covariance-free Incremental Principal Component Analysis - CCIPCA), the implemented method can be integrated into any network of wireless devices, including the devices with low-power processing resources. |
Mrazovac, Bojan; Bjelica, Milan Z; Atanasievski, Marko; Babić, Đurđa; Crvenković, Nikola; Dotlić, Igor; Jelovac, Vladimir; Jovanović, Saša; Korać, Bogdan; Kuzmanović, Majda [Serbian] Sistem i metoda za detekciju prisustva ljudi u objektu korišćenjem radio signala bežičnih električnih instalacija Technical ReportTR32041M85 RT-RK Institute for Computer-Based Systems Narodnog Fronta 23a, 2013, (TR32041). BibTeX | Tags: RSSI, smart homes, user monitoring @techreport{Mrazovac2013b, title = {[Serbian] Sistem i metoda za detekciju prisustva ljudi u objektu korišćenjem radio signala bežičnih električnih instalacija}, author = {Bojan Mrazovac and Milan Z. Bjelica and Marko Atanasievski and Đurđa Babić and Nikola Crvenković and Igor Dotlić and Vladimir Jelovac and Saša Jovanović and Bogdan Korać and Majda Kuzmanović}, year = {2013}, date = {2013-01-01}, address = {Narodnog Fronta 23a}, institution = {RT-RK Institute for Computer-Based Systems}, howpublished = {M85}, note = {TR32041}, keywords = {RSSI, smart homes, user monitoring}, pubstate = {published}, tppubtype = {techreport} } |
2012 |
Mrazovac, Bojan; Bjelica, Milan Z; Kukolj, Dragan; Todorović, Branislav; Samardžija, Dragan A Human Detection Method for Residential Smart Energy Systems Based on Zigbee RSSI Changes Journal ArticleM22 IEEE Transactions on Consumer Electronics, 58 (3), pp. 819-824, 2012, ISSN: 0098-3063. Abstract | Links | BibTeX | Tags: human detection, ieeexplore, RSSI, smart homes, user monitoring, zigbee @article{tcem1, title = {A Human Detection Method for Residential Smart Energy Systems Based on Zigbee RSSI Changes}, author = {Bojan Mrazovac and Milan Z. Bjelica and Dragan Kukolj and Branislav Todorović and Dragan Samardžija}, doi = {10.1109/TCE.2012.6311323}, issn = {0098-3063}, year = {2012}, date = {2012-09-27}, journal = {IEEE Transactions on Consumer Electronics}, volume = {58}, number = {3}, pages = {819-824}, abstract = {In this article, the device-free human presence detection method based on radio signal strength variations is proposed. The method exploits the known fact that human body interferes with radio signals by causing fading and shadowing effects. Introduced irregularities in the radio propagation pattern indicate possible presence of a human. The proposed method is incorporated into the existing platform for intelligent residential energy management. As opposed to conventional solutions which utilize a complex set of sensors for human detection, the proposed approach achieves the same only by analyzing and quantifying radio signal strength variations incorporated in messages exchanged between 2.4 GHz radio transceivers. One of the key benefits of the proposed solution is the integration of the detection algorithm into the smart power outlets and smart light switches. Such an approach improves interactions in smart home systems, enables intelligent power consumption management and low installation cost.}, howpublished = {M22}, keywords = {human detection, ieeexplore, RSSI, smart homes, user monitoring, zigbee}, pubstate = {published}, tppubtype = {article} } In this article, the device-free human presence detection method based on radio signal strength variations is proposed. The method exploits the known fact that human body interferes with radio signals by causing fading and shadowing effects. Introduced irregularities in the radio propagation pattern indicate possible presence of a human. The proposed method is incorporated into the existing platform for intelligent residential energy management. As opposed to conventional solutions which utilize a complex set of sensors for human detection, the proposed approach achieves the same only by analyzing and quantifying radio signal strength variations incorporated in messages exchanged between 2.4 GHz radio transceivers. One of the key benefits of the proposed solution is the integration of the detection algorithm into the smart power outlets and smart light switches. Such an approach improves interactions in smart home systems, enables intelligent power consumption management and low installation cost. |
Bjelica, Milan Z Context-aware consumer electronics - User interruption mitigation use case ConferenceKeynoteM32 Sheffield Hallam University, Faculty of Arts, Computing, Engineering and Sciences, Sheffield, Howard Street S1 1WB, 2012, (Keynote). Links | BibTeX | Tags: availability estimation, user monitoring @conference{shallam1, title = {Context-aware consumer electronics - User interruption mitigation use case}, author = {Milan Z. Bjelica}, url = {http://www.milanbjelica.info/publications/shu_2012_invitation.pdf}, year = {2012}, date = {2012-02-17}, publisher = {Sheffield Hallam University, Faculty of Arts, Computing, Engineering and Sciences}, address = {Sheffield, Howard Street S1 1WB}, howpublished = {M32}, note = {Keynote}, keywords = {availability estimation, user monitoring}, pubstate = {published}, tppubtype = {conference} } |
Bjelica, Milan Z; Dotlić, Igor; Predojević, Mladen; Škorić, Radovan; Vidović, Milovan; Zejak, Aleksa; Zivkovic, Aleksandar System and method for user activity monitoring using an optical 3D sensor and a microphone array Technical ReportTR32041M85 RT-RK Institute for Computer-Based Systems Narodnog Fronta 23a, 2012, (TR32041). BibTeX | Tags: smart homes, user monitoring @techreport{Bjelica2012, title = {System and method for user activity monitoring using an optical 3D sensor and a microphone array}, author = {Milan Z. Bjelica and Igor Dotlić and Mladen Predojević and Radovan Škorić and Milovan Vidović and Aleksa Zejak and Aleksandar Zivkovic}, year = {2012}, date = {2012-01-01}, address = {Narodnog Fronta 23a}, institution = {RT-RK Institute for Computer-Based Systems}, howpublished = {M85}, note = {TR32041}, keywords = {smart homes, user monitoring}, pubstate = {published}, tppubtype = {techreport} } |
Mrazovac, Bojan; Nenadic, Dusan; Bjelica, Milan Z; Kukolj, Dragan; Todorovic, Branislav M Passive Wireless Surveillance Method Based on Shannon Entropy of the Signal Strength Space ConferenceM63 Telecommunications Forum (TELFOR), 2012 20th, IEEE, Belgrade, Serbia, pp. 819-822, 2012, ISBN: 978-1-4673-2983-5. Abstract | Links | BibTeX | Tags: ieeexplore, RSSI, smart homes, user monitoring @conference{Mrazovac2012, title = {Passive Wireless Surveillance Method Based on Shannon Entropy of the Signal Strength Space}, author = {Bojan Mrazovac and Dusan Nenadic and Milan Z. Bjelica and Dragan Kukolj and Branislav M. Todorovic}, doi = {10.1109/TELFOR.2012.6419333}, isbn = {978-1-4673-2983-5}, year = {2012}, date = {2012-01-01}, booktitle = {Telecommunications Forum (TELFOR), 2012 20th}, pages = {819-822}, publisher = {IEEE}, address = {Belgrade, Serbia}, abstract = {Efficient wireless networks have significantly motivated the use of radio signals for intrusion detection and surveillance. While moving through an area covered with 2.4GHz radio network, a human body interferes with radio signals, resulting in strong variations of the signal strength. In this paper, we propose the method which recognizes human presence by analyzing principal components from the matrix of samples that present signal strength variations. Mainly based on smart power outlets and communication signals, the original environment is not visually modified, but a certain level of sensorial intelligence is introduced without additional sensors and installation costs. Principal component analysis combined with Shannon entropy enhances the detection accuracy and improves the overall robustness of the method.}, howpublished = {M63}, keywords = {ieeexplore, RSSI, smart homes, user monitoring}, pubstate = {published}, tppubtype = {conference} } Efficient wireless networks have significantly motivated the use of radio signals for intrusion detection and surveillance. While moving through an area covered with 2.4GHz radio network, a human body interferes with radio signals, resulting in strong variations of the signal strength. In this paper, we propose the method which recognizes human presence by analyzing principal components from the matrix of samples that present signal strength variations. Mainly based on smart power outlets and communication signals, the original environment is not visually modified, but a certain level of sensorial intelligence is introduced without additional sensors and installation costs. Principal component analysis combined with Shannon entropy enhances the detection accuracy and improves the overall robustness of the method. |
Mrazovac, Bojan; Bjelica, Milan Z; Kukolj, Dragan; Vukosavljev, Sasa; Todorovic, Branislav M; Samardzija, Dragan System and Method for Passive Surveillance in Indoor Environments Based on Principal Components of the Signal Strength Variation ConferenceM33 Wireless Communications in Unusual and Confined Areas (ICWCUCA), 2012 International Conference on, IEEE, Clermont Ferrand, France, 2012, ISBN: 978-1-4673-1290-5. Abstract | Links | BibTeX | Tags: ieeexplore, RSSI, smart homes, user monitoring @conference{Mrazovac2012, title = {System and Method for Passive Surveillance in Indoor Environments Based on Principal Components of the Signal Strength Variation}, author = {Bojan Mrazovac and Milan Z. Bjelica and Dragan Kukolj and Sasa Vukosavljev and Branislav M. Todorovic and Dragan Samardzija}, doi = {10.1109/ICWCUCA.2012.6402489}, isbn = {978-1-4673-1290-5}, year = {2012}, date = {2012-01-01}, booktitle = {Wireless Communications in Unusual and Confined Areas (ICWCUCA), 2012 International Conference on}, publisher = {IEEE}, address = {Clermont Ferrand, France}, abstract = {Efficient wireless sensor nodes have significantly motivated the usage of wireless sensor networks for intrusion detection and surveillance. A passive wireless surveillance network has the ability to detect humans by analyzing only the variations of the signal strength with respect to distance and alignment between nodes. When a human passes through an area covered by radio network, his/her body interferes with radio signals resulting in signal strength variations due to absorption, reflection and diffraction. In this paper, we analyze the signal strength variation induced by human presence, as a reliable method for passive surveillance. The proposed method analyzes principal components from a covariance matrix composed of samples that present signal strength variations gathered from wireless nodes. By using smart wireless outlets and inter-outlets communication signals, the original environment is not visually modified, but a certain level of sensorial intelligence is introduced without additional sensors. Principal component analysis enhances the detection accuracy level and improves the overall robustness of the surveillance method. Compared to conventional sensor networks, the use of smart wireless outlets and signal strength analysis preserves the transparency of the surveillance system and supports high level of sensorial intelligence, retaining low installation costs.}, howpublished = {M33}, keywords = {ieeexplore, RSSI, smart homes, user monitoring}, pubstate = {published}, tppubtype = {conference} } Efficient wireless sensor nodes have significantly motivated the usage of wireless sensor networks for intrusion detection and surveillance. A passive wireless surveillance network has the ability to detect humans by analyzing only the variations of the signal strength with respect to distance and alignment between nodes. When a human passes through an area covered by radio network, his/her body interferes with radio signals resulting in signal strength variations due to absorption, reflection and diffraction. In this paper, we analyze the signal strength variation induced by human presence, as a reliable method for passive surveillance. The proposed method analyzes principal components from a covariance matrix composed of samples that present signal strength variations gathered from wireless nodes. By using smart wireless outlets and inter-outlets communication signals, the original environment is not visually modified, but a certain level of sensorial intelligence is introduced without additional sensors. Principal component analysis enhances the detection accuracy level and improves the overall robustness of the surveillance method. Compared to conventional sensor networks, the use of smart wireless outlets and signal strength analysis preserves the transparency of the surveillance system and supports high level of sensorial intelligence, retaining low installation costs. |
Mrazovac, Bojan; Bjelica, Milan Z; Todorovic, Branislav M; Miljkovic, Aleksandar; Samardzija, Dragan Using radio irregularity for increasing residential energy awareness Journal ArticleM52 TELFOR Journal, 4 (1), pp. 31-36, 2012, ISSN: 1821-3251. Abstract | Links | BibTeX | Tags: RSSI, smart homes, user monitoring @article{Mrazovac2012, title = {Using radio irregularity for increasing residential energy awareness}, author = {Bojan Mrazovac and Milan Z. Bjelica and Branislav M. Todorovic and Aleksandar Miljkovic and Dragan Samardzija}, url = {http://scindeks.ceon.rs/article.aspx?artid=1821-32511201031M}, issn = {1821-3251}, year = {2012}, date = {2012-01-01}, journal = {TELFOR Journal}, volume = {4}, number = {1}, pages = {31-36}, abstract = {Radio irregularity phenomenon is often considered as a shortcoming of wireless networks. In this paper, the method of using radio irregularity as an efficient human presence detection sensor in smart homes is presented. The method is mainly based on monitoring variations of the received signal strength indicator (RSSI) within the messages used for the communication between wireless smart power outlets. The radio signals used for the inter-outlets communication can be absorbed, diffracted or reflected by objects in their propagation paths. When a human enters the existing radio communication field, the variation of the signal strength at the receiver is even more expressed. Based on the detected changes and compared to the initial thresholds set during the initialization phase, the system detects human presence. The proposed solution increases user awareness and automates the power control in households, with the primary goal to contribute in residential energy savings. Compared to conventional sensor networks, this approach preserves the sensorial intelligence, simplicity and low installation costs, without the need for additional sensors integration.}, howpublished = {M52}, keywords = {RSSI, smart homes, user monitoring}, pubstate = {published}, tppubtype = {article} } Radio irregularity phenomenon is often considered as a shortcoming of wireless networks. In this paper, the method of using radio irregularity as an efficient human presence detection sensor in smart homes is presented. The method is mainly based on monitoring variations of the received signal strength indicator (RSSI) within the messages used for the communication between wireless smart power outlets. The radio signals used for the inter-outlets communication can be absorbed, diffracted or reflected by objects in their propagation paths. When a human enters the existing radio communication field, the variation of the signal strength at the receiver is even more expressed. Based on the detected changes and compared to the initial thresholds set during the initialization phase, the system detects human presence. The proposed solution increases user awareness and automates the power control in households, with the primary goal to contribute in residential energy savings. Compared to conventional sensor networks, this approach preserves the sensorial intelligence, simplicity and low installation costs, without the need for additional sensors integration. |
Mrazovac, Bojan; Bjelica, Milan Z; Kukolj, Dragan; Vukosavljev, Sasa; Todorovic, Branislav M System Design for Passive Human Detection using Principal Components of the Signal Strength Space ConferenceM33 Engineering of Computer Based Systems (ECBS), 2012 IEEE 19th International Conference and Workshops on, IEEE, Novi Sad, Serbia, 2012, ISBN: 978-1-4673-0912-7. Abstract | Links | BibTeX | Tags: ieeexplore, RSSI, smart homes, user monitoring @conference{Mrazovac2012, title = {System Design for Passive Human Detection using Principal Components of the Signal Strength Space}, author = {Bojan Mrazovac and Milan Z. Bjelica and Dragan Kukolj and Sasa Vukosavljev and Branislav M. Todorovic}, doi = {10.1109/ECBS.2012.39}, isbn = {978-1-4673-0912-7}, year = {2012}, date = {2012-01-01}, booktitle = {Engineering of Computer Based Systems (ECBS), 2012 IEEE 19th International Conference and Workshops on}, publisher = {IEEE}, address = {Novi Sad, Serbia}, abstract = {Radio irregularity phenomenon is often considered as a shortcoming of wireless sensor networks. In this paper, the radio irregularity is regarded as a benefit of wireless networks. The proposed novel method for human presence detection, applied to the monitoring system for residential energy management, utilizes radio irregularity for an efficient human presence detection which increases user awareness and automates the power control. The method monitors 2.4GHz wireless (Zigbee) smart outlets and the communication signals between them to detect changes of the received signal strength indicator (RSSI) and its variations compared to the expected mean values. The signal strength variation is significantly increased due to human presence within the signal propagation path. By applying the algorithm for principal components analysis to the set of RSSI samples obtained from radio communication links within the detection area, it is possible to recognize a human presence. There is no need for additional presence sensors installation, because the proposed method applied to the smart outlets network is quite satisfactory to extend the entire system with the detection capability. Compared to the conventional sensor networks, the presented solution preserves the pervasiveness of smart energy and smart home systems, high level of sensorial intelligence, simplicity and low installation costs.}, howpublished = {M33}, keywords = {ieeexplore, RSSI, smart homes, user monitoring}, pubstate = {published}, tppubtype = {conference} } Radio irregularity phenomenon is often considered as a shortcoming of wireless sensor networks. In this paper, the radio irregularity is regarded as a benefit of wireless networks. The proposed novel method for human presence detection, applied to the monitoring system for residential energy management, utilizes radio irregularity for an efficient human presence detection which increases user awareness and automates the power control. The method monitors 2.4GHz wireless (Zigbee) smart outlets and the communication signals between them to detect changes of the received signal strength indicator (RSSI) and its variations compared to the expected mean values. The signal strength variation is significantly increased due to human presence within the signal propagation path. By applying the algorithm for principal components analysis to the set of RSSI samples obtained from radio communication links within the detection area, it is possible to recognize a human presence. There is no need for additional presence sensors installation, because the proposed method applied to the smart outlets network is quite satisfactory to extend the entire system with the detection capability. Compared to the conventional sensor networks, the presented solution preserves the pervasiveness of smart energy and smart home systems, high level of sensorial intelligence, simplicity and low installation costs. |
Mrazovac, Bojan; Bjelica, Milan Z; Kukolj, Dragan; Todorovic, Branislav M; Vukosavljev, Sasa Human Presence Detection Using Radio Irregularity in Wireless Networks ConferenceM33 SENSORNETS 2012, pp. 920-923, 2012. Abstract | Links | BibTeX | Tags: networks, RSSI, smart homes, user monitoring @conference{Mrazovac2012, title = {Human Presence Detection Using Radio Irregularity in Wireless Networks}, author = {Bojan Mrazovac and Milan Z. Bjelica and Dragan Kukolj and Branislav M. Todorovic and Sasa Vukosavljev}, url = {http://dblp.org/db/conf/sensornets/sensornets2012}, year = {2012}, date = {2012-01-01}, booktitle = {SENSORNETS 2012}, pages = {920-923}, abstract = {The paper presents a human detection method applied to the intelligent device-level software platform for residential energy management. The proposed solution increases user awareness and automates the power control, with the primary goal to contribute in energy savings. Instead of using conventional presence sensors as inputs for automated power management, the proposed solution utilizes a network of wireless power outlets and monitors the variations of the signal strength indicator used for the communication between them. The radio signals used for the inter-outlets communication can be scattered, absorbed or reflected by objects in their propagation paths, such as a human body which additionally increases the variation of the signal strength indicator at the receiver. This phenomenon is known as radio irregularity, and is often considered as a shortcoming of radio networks. In this paper the idea of using radio irregularity as efficient presence detection is proposed. With regard to conventional sensors, this solution preserves the pervasiveness of smart energy and smart home systems, high level of sensorial intelligence and low installation costs.}, howpublished = {M33}, keywords = {networks, RSSI, smart homes, user monitoring}, pubstate = {published}, tppubtype = {conference} } The paper presents a human detection method applied to the intelligent device-level software platform for residential energy management. The proposed solution increases user awareness and automates the power control, with the primary goal to contribute in energy savings. Instead of using conventional presence sensors as inputs for automated power management, the proposed solution utilizes a network of wireless power outlets and monitors the variations of the signal strength indicator used for the communication between them. The radio signals used for the inter-outlets communication can be scattered, absorbed or reflected by objects in their propagation paths, such as a human body which additionally increases the variation of the signal strength indicator at the receiver. This phenomenon is known as radio irregularity, and is often considered as a shortcoming of radio networks. In this paper the idea of using radio irregularity as efficient presence detection is proposed. With regard to conventional sensors, this solution preserves the pervasiveness of smart energy and smart home systems, high level of sensorial intelligence and low installation costs. |
Mrazovac, Bojan; Bjelica, Milan Z; Kukolj, Dragan; Todorovic, Branislav M; Teslic, Nikola A Human Detection Method for Residential Smart Energy Systems Based on Zigbee RSSI Changes ConferenceM33 Consumer Electronics (ICCE), 2012 IEEE International Conference on, IEEE, Las Vegas, NV, USA, pp. 112-113, 2012, ISSN: 2158-3994. Abstract | Links | BibTeX | Tags: ieeexplore, RSSI, smart homes, user monitoring @conference{Mrazovac2012, title = {A Human Detection Method for Residential Smart Energy Systems Based on Zigbee RSSI Changes}, author = {Bojan Mrazovac and Milan Z. Bjelica and Dragan Kukolj and Branislav M. Todorovic and Nikola Teslic}, doi = {10.1109/ICCE.2012.6161764}, issn = {2158-3994}, year = {2012}, date = {2012-01-01}, booktitle = {Consumer Electronics (ICCE), 2012 IEEE International Conference on}, pages = {112-113}, publisher = {IEEE}, address = {Las Vegas, NV, USA}, abstract = {The paper presents a novel method for human detection that is applied to the automatic control of home appliances’ power consumption. The method uses a wireless smart outlets network and changes of received signal strength indicator (RSSI) between stationary communication nodes (2.4 GHz smart outlets). The main idea is to monitor the changes of RSSI which violate the established radio communication field between nodes inside a room, due to a human’s presence. When a person enters into the established radio communication field, he/she induces the change of RSSI which is periodically read during the message exchange between wireless nodes. Based on the detected changes with regard to the initial thresholds, the system detects human presence and responds with the automatic control of power consumption of all appliances connected to the power network. Such an approach increases users’ awareness by contributing to the energy savings and low installation costs.}, howpublished = {M33}, keywords = {ieeexplore, RSSI, smart homes, user monitoring}, pubstate = {published}, tppubtype = {conference} } The paper presents a novel method for human detection that is applied to the automatic control of home appliances’ power consumption. The method uses a wireless smart outlets network and changes of received signal strength indicator (RSSI) between stationary communication nodes (2.4 GHz smart outlets). The main idea is to monitor the changes of RSSI which violate the established radio communication field between nodes inside a room, due to a human’s presence. When a person enters into the established radio communication field, he/she induces the change of RSSI which is periodically read during the message exchange between wireless nodes. Based on the detected changes with regard to the initial thresholds, the system detects human presence and responds with the automatic control of power consumption of all appliances connected to the power network. Such an approach increases users’ awareness by contributing to the energy savings and low installation costs. |
2011 |
Bjelica, Milan Z; Mrazovac, Bojan; Papp, Ištvan; Teslić, Nikola Set-Top Box-Based Communication Client with the Automatic Operation Profile Selection Journal ArticleM22 IEEE Transactions on Consumer Electronics, 57 (3), pp. 1433-1441, 2011, ISSN: 0098-3063. Abstract | Links | BibTeX | Tags: availability estimation, context-aware, digital TV, ieeexplore, smart homes, user monitoring @article{tce1, title = {Set-Top Box-Based Communication Client with the Automatic Operation Profile Selection}, author = {Milan Z. Bjelica and Bojan Mrazovac and Ištvan Papp and Nikola Teslić}, doi = {10.1109/TCE.2011.6018904}, issn = {0098-3063}, year = {2011}, date = {2011-09-15}, journal = {IEEE Transactions on Consumer Electronics}, volume = {57}, number = {3}, pages = {1433-1441}, abstract = {The introduction of IP-based services to the realm of television broadcasting, television receivers and set-top boxes, opened possibilities for different, new applications for the users in front of their TV screens. IPTV, IP-based communications, social networking and web browsing are among the newest addons to the traditional digital TV concepts. This paper presents an integration concept and the implemented solution of a communication client application for a set-top box device. The communication client is provided as an add-on to the set-top box in the form of USB flash thumb drive. In addition to the voice call and messages, more advanced challenges are recognized and implemented for this application, with regard to the ubiquitous computing concept: context-aware features including an automatic profile selection based on the activities and the availability of people watching the TV, as calculated by the use of embedded sensors and proposed algorithms; the announcement of the selected profile by the use of RGB lighting effects for the RF-controlled RGB luminaires in the living room. These suggested features aim to improve the two most general usability problems of communication client applications applied to the specific set-top box solution. Firstly, interrupting the users by the notifications produced by the application can induce negative effects to user satisfaction and/or stress, if those notifications unexpectedly occur during engaging activities, such as watching the favorite TV show or talking to a friend in the room. Therefore, automatic profile selection based on detected user activities can mitigate these situations and provide the most suitable means of notifying the user for each specific situation of his/her engagement. Secondly, ignorance of the selected profile by other people interacting in person is accounted for by the announcement of the availability by using lighting stimuli.}, howpublished = {M22}, keywords = {availability estimation, context-aware, digital TV, ieeexplore, smart homes, user monitoring}, pubstate = {published}, tppubtype = {article} } The introduction of IP-based services to the realm of television broadcasting, television receivers and set-top boxes, opened possibilities for different, new applications for the users in front of their TV screens. IPTV, IP-based communications, social networking and web browsing are among the newest addons to the traditional digital TV concepts. This paper presents an integration concept and the implemented solution of a communication client application for a set-top box device. The communication client is provided as an add-on to the set-top box in the form of USB flash thumb drive. In addition to the voice call and messages, more advanced challenges are recognized and implemented for this application, with regard to the ubiquitous computing concept: context-aware features including an automatic profile selection based on the activities and the availability of people watching the TV, as calculated by the use of embedded sensors and proposed algorithms; the announcement of the selected profile by the use of RGB lighting effects for the RF-controlled RGB luminaires in the living room. These suggested features aim to improve the two most general usability problems of communication client applications applied to the specific set-top box solution. Firstly, interrupting the users by the notifications produced by the application can induce negative effects to user satisfaction and/or stress, if those notifications unexpectedly occur during engaging activities, such as watching the favorite TV show or talking to a friend in the room. Therefore, automatic profile selection based on detected user activities can mitigate these situations and provide the most suitable means of notifying the user for each specific situation of his/her engagement. Secondly, ignorance of the selected profile by other people interacting in person is accounted for by the announcement of the availability by using lighting stimuli. |
Bjelica, Milan Z; Teslić, Nikola Context-aware lighting as an immersive user interface for mediating social interactions ConferenceKeynoteM31 Proceedings of the 10th WSEAS international conference on Applied computer and applied computational science, Venice, Italy, 2011, ISBN: 978-960-474-281-3, (Keynote). Abstract | Links | BibTeX | Tags: availability estimation, context-aware, keynote, lighting control, user monitoring @conference{wseas1, title = {Context-aware lighting as an immersive user interface for mediating social interactions}, author = {Milan Z. Bjelica and Nikola Teslić}, url = {http://dl.acm.org/citation.cfm?id=1965653}, isbn = {978-960-474-281-3}, year = {2011}, date = {2011-03-08}, booktitle = {Proceedings of the 10th WSEAS international conference on Applied computer and applied computational science}, address = {Venice, Italy}, abstract = {Evolving generations of user interfaces are inadvertently seeking for revolution in the way people interact with computers and computer-based systems. We witness the birth of a potpourri of shape-shifting, translucent user interface forms or wearable gadgetry that is not likely to be adopted any time soon. Instead of proposing a next generation of the user interface, we argue that new means of interfacing should be sought for usability problems of marginal size, but immense impact to work and living. In this paper we propose an approach that addresses subtle usability issues of software applications and systems with regard to social interactions. Our approach introduces a context-aware platform that uses lighting effects programmed specifically for each state of context. We exercise the use of this platform in several important social interaction situations, such as to prevent interruptions or attract attention.}, howpublished = {M31}, note = {Keynote}, keywords = {availability estimation, context-aware, keynote, lighting control, user monitoring}, pubstate = {published}, tppubtype = {conference} } Evolving generations of user interfaces are inadvertently seeking for revolution in the way people interact with computers and computer-based systems. We witness the birth of a potpourri of shape-shifting, translucent user interface forms or wearable gadgetry that is not likely to be adopted any time soon. Instead of proposing a next generation of the user interface, we argue that new means of interfacing should be sought for usability problems of marginal size, but immense impact to work and living. In this paper we propose an approach that addresses subtle usability issues of software applications and systems with regard to social interactions. Our approach introduces a context-aware platform that uses lighting effects programmed specifically for each state of context. We exercise the use of this platform in several important social interaction situations, such as to prevent interruptions or attract attention. |
Mrazovac, Bojan; Todorovic, Branislav M; Bjelica, Milan Z; Miljkovic, Aleksandar; Samardzija, Dragan Using Radio Irregularity for Increasing Residential Energy Awareness ConferenceM63 Telecommunications Forum (TELFOR), 2011 19th, IEEE, Belgrade, Serbia, pp. 385-388, 2011, ISBN: 978-1-4577-1499-3. Abstract | Links | BibTeX | Tags: ieeexplore, RSSI, smart homes, user monitoring @conference{Mrazovac2011, title = {Using Radio Irregularity for Increasing Residential Energy Awareness}, author = {Bojan Mrazovac and Branislav M. Todorovic and Milan Z. Bjelica and Aleksandar Miljkovic and Dragan Samardzija}, doi = {10.1109/TELFOR.2011.6143569}, isbn = {978-1-4577-1499-3}, year = {2011}, date = {2011-01-01}, booktitle = {Telecommunications Forum (TELFOR), 2011 19th}, pages = {385-388}, publisher = {IEEE}, address = {Belgrade, Serbia}, abstract = {Radio irregularity phenomenon is often noted as a shortcoming of wireless networks. In this paper we present the method of using radio irregularity as an efficient presence sensor which increases user awareness in smart homes. The idea is based on monitoring the received signal strength indicator (RSSI) between stationary wireless (2.4 GHz - Zigbee) power outlets. When a human enters into the established radio communication field, the signal can be absorbed, scattered or reflected by the body which induces strong variations of RSSI. Based on the detected changes compared to the initial values, the system detects presence and responds with the automatic control of any appliance connected to outlets. With regard to conventional sensors, the proposed solution preserves the sensorial intelligence and low installation costs without additional devices.}, howpublished = {M63}, keywords = {ieeexplore, RSSI, smart homes, user monitoring}, pubstate = {published}, tppubtype = {conference} } Radio irregularity phenomenon is often noted as a shortcoming of wireless networks. In this paper we present the method of using radio irregularity as an efficient presence sensor which increases user awareness in smart homes. The idea is based on monitoring the received signal strength indicator (RSSI) between stationary wireless (2.4 GHz - Zigbee) power outlets. When a human enters into the established radio communication field, the signal can be absorbed, scattered or reflected by the body which induces strong variations of RSSI. Based on the detected changes compared to the initial values, the system detects presence and responds with the automatic control of any appliance connected to outlets. With regard to conventional sensors, the proposed solution preserves the sensorial intelligence and low installation costs without additional devices. |
Mrazovac, Bojan; Bjelica, Milan Z; Papp, Istvan; Teslic, Nikola Smart audio/video playback control based on presence detection and user localization in home environment ConferenceM33 Engineering of Computer Based Systems (ECBS-EERC), 2011 2nd Eastern European Regional Conference on the, IEEE, Bratislava, Slovakia, pp. 44-53, 2011, ISBN: 978-1-4577-0683-7. Abstract | Links | BibTeX | Tags: ieeexplore, smart homes, user monitoring @conference{Mrazovac2011, title = {Smart audio/video playback control based on presence detection and user localization in home environment}, author = {Bojan Mrazovac and Milan Z. Bjelica and Istvan Papp and Nikola Teslic}, doi = {10.1109/ECBS-EERC.2011.16}, isbn = {978-1-4577-0683-7}, year = {2011}, date = {2011-01-01}, booktitle = {Engineering of Computer Based Systems (ECBS-EERC), 2011 2nd Eastern European Regional Conference on the}, pages = {44-53}, publisher = {IEEE}, address = {Bratislava, Slovakia}, abstract = {This paper presents the design and implementation of a simple software-based home control platform used for the intelligent automatic control of audio/video devices. The system facilitates integration of various residential sensors, with an accent on users’ localization and presence detection. For the presence detection and localization we utilize three, the most frequently used technologies: visual (3D camera), audio (Microphone array) and passive infrared (PIR sensors). The home controller interprets information about user’s position as a command issued to a list of UPnP/DLNA rendering devices (PC, TV or Audio system). Current distance and user’s position can activate, abort or change video presentation, pause and continue playback, amplify sound or silence it automatically with regard to information retrieved from sensors and actions described in a so-called ambient behavior patterns. The way the system automatically responds to detected positions is controllable and changeable, and it is defined by executing XML documents which represent the behavior patterns - scripts. By using the easily accessible user interface, users are able to choose one of the available scripts or to prepare a new one, and to set up different audio/video modes in a room, similarly to switching profiles on mobile phones. The system is not limited to presence detection and audio/video control. Performing simple modifications of behavior scripts, the controller can interpret data from different kinds of sensors in an unobtrusive way of controlling various home appliances.}, howpublished = {M33}, keywords = {ieeexplore, smart homes, user monitoring}, pubstate = {published}, tppubtype = {conference} } This paper presents the design and implementation of a simple software-based home control platform used for the intelligent automatic control of audio/video devices. The system facilitates integration of various residential sensors, with an accent on users’ localization and presence detection. For the presence detection and localization we utilize three, the most frequently used technologies: visual (3D camera), audio (Microphone array) and passive infrared (PIR sensors). The home controller interprets information about user’s position as a command issued to a list of UPnP/DLNA rendering devices (PC, TV or Audio system). Current distance and user’s position can activate, abort or change video presentation, pause and continue playback, amplify sound or silence it automatically with regard to information retrieved from sensors and actions described in a so-called ambient behavior patterns. The way the system automatically responds to detected positions is controllable and changeable, and it is defined by executing XML documents which represent the behavior patterns - scripts. By using the easily accessible user interface, users are able to choose one of the available scripts or to prepare a new one, and to set up different audio/video modes in a room, similarly to switching profiles on mobile phones. The system is not limited to presence detection and audio/video control. Performing simple modifications of behavior scripts, the controller can interpret data from different kinds of sensors in an unobtrusive way of controlling various home appliances. |
Bjelica, Milan Z; Mrazovac, Bojan; Papp, Istvan; Teslic, Nikola User Availability Estimation Prototype for Home and Office Use ConferenceM33 Consumer Electronics (ICCE), 2011 IEEE International Conference on, IEEE, Las Vegas, NV, USA, pp. 259-260, 2011, ISSN: 2158-3994. Abstract | Links | BibTeX | Tags: availability estimation, context-aware, ieeexplore, smart homes, user monitoring @conference{Bjelica2011, title = {User Availability Estimation Prototype for Home and Office Use}, author = {Milan Z. Bjelica and Bojan Mrazovac and Istvan Papp and Nikola Teslic}, doi = {10.1109/ICCE.2011.5722571}, issn = {2158-3994}, year = {2011}, date = {2011-01-01}, booktitle = {Consumer Electronics (ICCE), 2011 IEEE International Conference on}, pages = {259-260}, publisher = {IEEE}, address = {Las Vegas, NV, USA}, abstract = {Modern technologies and connectivity enable users to perform their tasks faster than ever before. Overall performance no longer depends upon barriers imposed by the tools used for the work, but by the speed of the worker himself. Trying to compete with their electronic “helpers”, such as computers, PDAs and mobile phones, people perform multitasking as common practice while trying to minimize idleness and produce results. Interruptions by others are not desirable. Nevertheless, time gaps when a person appears to be idle are sometimes the only moments for interaction. This paper presents a multi-sensorial platform that estimates person availability, and alerts others by using light effects and a web portal. Using cameras, microphones and events from home/office equipment, the platform decides the light scheme to illuminate the foyer in front of the monitored room using the color corresponding to occupant’s availability. People, such as coworkers, can also visit the web portal to check the availability of their colleagues prior to visiting them in person.}, howpublished = {M33}, keywords = {availability estimation, context-aware, ieeexplore, smart homes, user monitoring}, pubstate = {published}, tppubtype = {conference} } Modern technologies and connectivity enable users to perform their tasks faster than ever before. Overall performance no longer depends upon barriers imposed by the tools used for the work, but by the speed of the worker himself. Trying to compete with their electronic “helpers”, such as computers, PDAs and mobile phones, people perform multitasking as common practice while trying to minimize idleness and produce results. Interruptions by others are not desirable. Nevertheless, time gaps when a person appears to be idle are sometimes the only moments for interaction. This paper presents a multi-sensorial platform that estimates person availability, and alerts others by using light effects and a web portal. Using cameras, microphones and events from home/office equipment, the platform decides the light scheme to illuminate the foyer in front of the monitored room using the color corresponding to occupant’s availability. People, such as coworkers, can also visit the web portal to check the availability of their colleagues prior to visiting them in person. |
2010 |
Bjelica, Milan Z; Teslić, Nikola Characterizing Application Attentiveness to its Users: A Method and Possible Use Cases Journal ArticleM24 International Journal on Computer Science and Applications, 7 (3), pp. 60-83, 2010, ISSN: 0972-9038. Abstract | Links | BibTeX | Tags: computer science, user monitoring @article{ijcsa1, title = {Characterizing Application Attentiveness to its Users: A Method and Possible Use Cases}, author = {Milan Z. Bjelica and Nikola Teslić}, url = {http://dblp.uni-trier.de/rec/html/journals/ijcsa/BjelicaT10}, issn = {0972-9038}, year = {2010}, date = {2010-01-01}, journal = {International Journal on Computer Science and Applications}, volume = {7}, number = {3}, pages = {60-83}, abstract = {Mitigating risks of rejection by end users should be the ultimate goal for any computer-based system or application. Latest researches have shown that with the growth of wearable and mobile computer based products, the obtrusiveness of user applications has become significant. User time and his attention should be regarded as resources, as important as processing power or consumed energy. In this paper, we propose a novel method to characterize undesired interference between application usage and habitual activities of users, to what we refer as attentive interference. We argue that this interference is inversely proportional with application usability. We also present a set of heuristics that can be followed in order to increase application attentiveness, a case study for a commercial product and an overview of an ongoing implementation of presented characterizations to increase efficiency of context-aware systems.}, howpublished = {M24}, keywords = {computer science, user monitoring}, pubstate = {published}, tppubtype = {article} } Mitigating risks of rejection by end users should be the ultimate goal for any computer-based system or application. Latest researches have shown that with the growth of wearable and mobile computer based products, the obtrusiveness of user applications has become significant. User time and his attention should be regarded as resources, as important as processing power or consumed energy. In this paper, we propose a novel method to characterize undesired interference between application usage and habitual activities of users, to what we refer as attentive interference. We argue that this interference is inversely proportional with application usability. We also present a set of heuristics that can be followed in order to increase application attentiveness, a case study for a commercial product and an overview of an ongoing implementation of presented characterizations to increase efficiency of context-aware systems. |
Bjelica, Milan Z; Pilipovic, Milos; Kastelan, Ivan; Mrazovac, Bojan User Busyness Estimation Prototype with RGB Lighting Alerts ConferenceM63 TELFOR 2010, IEEE, Belgrade, Serbia, pp. 819-822, 2010. Abstract | Links | BibTeX | Tags: availability estimation, context-aware, smart homes, user monitoring @conference{Bjelica2010, title = {User Busyness Estimation Prototype with RGB Lighting Alerts}, author = {Milan Z. Bjelica and Milos Pilipovic and Ivan Kastelan and Bojan Mrazovac}, url = {http://2010.telfor.rs/radovi/}, year = {2010}, date = {2010-01-01}, booktitle = {TELFOR 2010}, pages = {819-822}, publisher = {IEEE}, address = {Belgrade, Serbia}, abstract = {This paper presents a multi-sensorial platform that estimates person availability, and alerts others by using light effects and a web portal. Using cameras, microphones and events from home/office equipment, the platform decides the light scheme to illuminate the foyer in front of the monitored room using the color corresponding to occupant’s availability (by using DMX-based RGB lamps). People, such as coworkers, can also visit the web portal to check the availability of their colleagues prior to visiting them in person.}, howpublished = {M63}, keywords = {availability estimation, context-aware, smart homes, user monitoring}, pubstate = {published}, tppubtype = {conference} } This paper presents a multi-sensorial platform that estimates person availability, and alerts others by using light effects and a web portal. Using cameras, microphones and events from home/office equipment, the platform decides the light scheme to illuminate the foyer in front of the monitored room using the color corresponding to occupant’s availability (by using DMX-based RGB lamps). People, such as coworkers, can also visit the web portal to check the availability of their colleagues prior to visiting them in person. |
Mrazovac, Bojan; Bjelica, Milan Z; Papp, Istvan; Kovacevic, Vladimir A system for distributed video playback based on 3D localization of the user ConferenceM63 ETRAN 2010, 2010. Abstract | Links | BibTeX | Tags: smart homes, user monitoring @conference{Mrazovac2010, title = {A system for distributed video playback based on 3D localization of the user}, author = {Bojan Mrazovac and Milan Z. Bjelica and Istvan Papp and Vladimir Kovacevic}, url = {http://etran.etf.rs/etran2010/sekcije_2010.htm}, year = {2010}, date = {2010-01-01}, booktitle = {ETRAN 2010}, abstract = {This paper presents a simple Ambient Intelligence system design and implementation. The system is based on 3D user localization within a room using the 3D camera and responding through an array of UPnP/DLNA rendering devices. The way the system responds to users’ location is controllable and changeable, and it is defined by executing an XML document which represents the ambient scenario.}, howpublished = {M63}, keywords = {smart homes, user monitoring}, pubstate = {published}, tppubtype = {conference} } This paper presents a simple Ambient Intelligence system design and implementation. The system is based on 3D user localization within a room using the 3D camera and responding through an array of UPnP/DLNA rendering devices. The way the system responds to users’ location is controllable and changeable, and it is defined by executing an XML document which represents the ambient scenario. |