Features and objects in visual processing
Scientific American
QoS impact on user perception and understanding of multimedia video clips
MULTIMEDIA '98 Proceedings of the sixth ACM international conference on Multimedia
Experimental evaluation of loss perception in continuous media
Multimedia Systems
User performance with gaze contingent multiresolutional displays
ETRA '00 Proceedings of the 2000 symposium on Eye tracking research & applications
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
ETRA '02 Proceedings of the 2002 symposium on Eye tracking research & applications
Focusing on the essential: considering attention in display design
Communications of the ACM
Scalable on-demand media streaming with packet loss recovery
IEEE/ACM Transactions on Networking (TON)
Automatic Identification of Perceptually Important Regions in an Image
ICPR '98 Proceedings of the 14th International Conference on Pattern Recognition-Volume 1 - Volume 1
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)
How late can you update gaze-contingent multiresolutional displays without detection?
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)
Stars in their eyes: what eye-tracking reveals about multimedia perceptual quality
IEEE Transactions on Systems, Man, and Cybernetics, Part A: Systems and Humans
Head motion anticipation for virtual-environment applications using kinematics and EMG energy
IEEE Transactions on Systems, Man, and Cybernetics, Part A: Systems and Humans
IEEE Transactions on Systems, Man, and Cybernetics, Part A: Systems and Humans
Perceived synchronization of olfactory multimedia
IEEE Transactions on Systems, Man, and Cybernetics, Part A: Systems and Humans
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When viewing multimedia presentations, a user only attends to a relatively small part of the video display at any one point in time. By shifting allocation of bandwidth from peripheral areas to those locations where a user's gaze is more likely to rest, attentive displays can be produced. Attentive displays aim to reduce resource requirements while minimizing negative user perception--understood in this paper as not only a user's ability to assimilate and understand information but also his/her subjective satisfaction with the video content. This paper introduces and discusses a perceptual comparison between two region-of-interest display (RoID) adaptation techniques. A RoID is an attentive display where bandwidth has been preallocated around measured or highly probable areas of user gaze. In this paper, video content was manipulated using two sources of data: empirical measured data (captured using eye-tracking technology) and predictive data (calculated from the physical characteristics of the video data). Results show that display adaptation causes significant variation in users' understanding of specific multimedia content. Interestingly, RoID adaptation and the type of video being presented both affect user perception of video quality. Moreover, the use of frame rates less than 15 frames per second, for any video adaptation technique, caused a significant reduction in user perceived quality, suggesting that although users are aware of video quality reduction, it does impact level of information assimilation and understanding. Results also highlight that user level of enjoyment is significantly affected by the type of video yet is not as affected by the quality or type of video adaptation--an interesting implication in the field of entertainment.