Video Coding And Unequal Error Protection Based On Regions Of Interest

For the past several decades, the design of image transmission systems were largely based on Shannon's source-channel separation theorem, which mainly states in a communication system the source coding and channel coding can be optimized separately without sacrificing the system's overall performance. However, the theorem holds only under asymptotic conditions, where both source codes and channel codes are approaching infinite length and complexity, and point-to-point transmission; while it is inefficient in practice and the separation system hold the system's performance limit. Thus joint source-channel coding schemes as alternatives for achieving reliable practical communication of signals. Unequal error protection is a branch of it. In digital communication systems, especially in the image and video transmission, the importance of data is different. In the cases where resources of the system is limit, in order to enhance the performance of the system, it is necessary to implement UEP schemes to allocate different amount of resources to different kinds of data.In the field of image and video transmission, the available UEP schemes mainly aim to improve the objective quality of decoded image and video sequences. However, viewers always only focus on certain regions of the transmitted images– the so-called regions of interest, and do not note other...