Towards efficient context-specific video coding based on gaze-tracking analysis
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)
A skin detection approach based on color distance map
EURASIP Journal on Advances in Signal Processing
Delivering diagnostic quality video over mobile wireless networks for telemedicine
International Journal of Telemedicine and Applications
Robust region-of-interest determination based on user attention model through visual rhythm analysis
IEEE Transactions on Circuits and Systems for Video Technology
On the performance of kernel methods for skin color segmentation
EURASIP Journal on Advances in Signal Processing
Telehealth '07 The Third IASTED International Conference on Telehealth
Detecting skin in face recognition systems: A colour spaces study
Digital Signal Processing
Saliency-based fidelity adaptation preprocessing for video coding
Journal of Computer Science and Technology - Special issue on natural language processing
Automatic segmentation of characteristic areas of the human head on thermographic images
Machine Graphics & Vision International Journal
Visual interaction in natural human-machine dialogue
PIT'06 Proceedings of the 2006 international tutorial and research conference on Perception and Interactive Technologies
A novel H.264 rate control algorithm with consideration of visual attention
Multimedia Tools and Applications
Efficient region-of-interest scalable video coding with adaptive bit-rate control
Advances in Multimedia
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The ability to give higher priority to regions-of-interest (ROI) is the emerging functionality for present day video coding. A simple and fast method for face detection is proposed to define ROIs dynamically in real time applications. We use the color information Cr and RGB variance to determine the skin-color pixels. Because the two color spaces are commonly used in most hardware and video codec standards, there is no extra computation overhead required for conversion. Low-pass filtering is applied to the background to reduce used bits. For the video coding system, a region-based video codec based on H.263+ with the option mode of modified quantization is set up. We adjust the distortion weight parameter and variance at the macroblock layer to control the qualities at different regions. Experimental results show that the proposed methods can significantly improve quality at the ROI. Our methods are suitable for real time videoconferencing.