Improving the coding of regions of interest

This paper considers a video coding system for surveillance applications. It consists of one "base encoder" that encodes a down-sampled, full-view version of the input video sequence and one "region of interest" (ROI) encoder that encodes an ROI of the video sequence at the original image resolution. An important requirement of the video coding system is that the ROI bit stream and the base bit stream should be independently decodable. We explore the inter-relationship between the full-view video sequence and the ROI video sequence and apply it to improve the computational efficiency of the ROI encoder. The proposed algorithm achieves an average of 170% speedup

[1]  Susanto Rahardja,et al.  Fast mode decision algorithm for intraprediction in H.264/AVC video coding , 2005, IEEE Transactions on Circuits and Systems for Video Technology.

[2]  Sang Uk Lee,et al.  Fast mode decision for P-frames in H.264 , 2007 .

[3]  Meng-Ting Lu,et al.  Fast multi-frame motion estimation for H.264 and its applications to complexity-aware streaming , 2005, 2005 IEEE International Symposium on Circuits and Systems.

[4]  Che-Yu Chang,et al.  Fast Multi-Frame Motion Estimation and Mode Decision for H.264 Encoders , 2005, 2005 International Conference on Wireless Networks, Communications and Mobile Computing.

[5]  G. Bjontegaard,et al.  Calculation of Average PSNR Differences between RD-curves , 2001 .

[6]  Thomas Wiegand,et al.  Draft ITU-T recommendation and final draft international standard of joint video specification , 2003 .

[7]  Susanto Rahardja,et al.  Fast intermode decision in H.264/AVC video coding , 2005, IEEE Transactions on Circuits and Systems for Video Technology.

[8]  Kai-Kuang Ma,et al.  Unequal-arm adaptive rood pattern search for fast block-matching motion estimation in the JVT/H.26L , 2003, Proceedings 2003 International Conference on Image Processing (Cat. No.03CH37429).