Learning user interest for image browsing on small-form-factor devices
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Region extraction of a gaze object using the gaze point and view image sequences
ICMI '05 Proceedings of the 7th international conference on Multimodal interfaces
Crowdsourced automatic zoom and scroll for video retargeting
Proceedings of the international conference on Multimedia
Bilayer video segmentation for videoconferencing applications
ICME '11 Proceedings of the 2011 IEEE International Conference on Multimedia and Expo
Video transcoding: an overview of various techniques and research issues
IEEE Transactions on Multimedia
Overview of the Scalable Video Coding Extension of the H.264/AVC Standard
IEEE Transactions on Circuits and Systems for Video Technology
Impact of Region-of-Interest Video Coding on Perceived Quality in Mobile Video
ICME '12 Proceedings of the 2012 IEEE International Conference on Multimedia and Expo
ROI-based Video Quality Assessment and Regulation for Mobile Videoconferencing
Proceedings of Workshop on Mobile Video Delivery
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The experience of watching real-time high definition videos on mobile devices is greatly limited due to the screen size, especially when people attend real-time videoconferencing meetings via their smart phones. This issue could be solved by a ROI (Region of Interest) based scalable video transcoding scheme that displays the ROIs with higher quality and other regions in the same video frame. However, currently most researches on ROI based video adaptation focus on VOD streaming applications rather than real-time videoconferencing. This paper presents a novel scheme of ROI detection and transcoding for mobile devices in video-conferencing system that uses a Kinect based approach to detect ROIs and a ROI-enabled transcoding scheme will be used to transcode the video streams by using a re-quantization approach. Experiments shows that with the ROI extraction algorithm and the ROI-enabled transcoding scheme, the bitrate of a video stream can be significantly reduced, while the perceived quality of the video is still good enough.