An efficient resynchronization technique for perceptual quality enhancement for robust video transmission

In this paper, using results from a simplified macroblock (MB)-based segmentation algorithm, we propose a framework called content-based resynchronization (CBR) for the effective positioning of resynchronization markers such that the image quality of the foreground can be improved at the expense of sacrificing an unimportant background. We do this because, in applications such as video telephony and video conferencing, the foreground is typically the most important image region for viewers. Experimental results demonstrate that this scheme significantly improves the subjective quality of video sequence for robust video transmission.