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A high-definition video quality assessment (VQA) database that captures two typical video distortion types in video services (namely, “compression” and “compression followed by scaling”) is presented in this work. The VQA database, called MCL-V, contains 12 source video clips and 96 distorted video clips with subjective assessment scores. The source video clips are selected from a large pool of public-domain...
This paper focuses on the mechanism underlying the overall delay of a real-time video communication system from the time of capture at the encoder to the time of display at the decoder. A detailed analysis is presented to illustrate the delay problem. We then describe a statistically uniform intra-block refresh scheme for very low delay video communication. By scattering intra-blocks uniformly into...
Side information generation is a major function in the distributed video coding (DVC) scheme. It significantly determines the performance of the codec. In this paper, an improved technique is proposed for the temporal side information generation process. In the forward motion estimation, various block sizes and a weighted distortion function are adopted in the mode decision step. Motion vectors of...
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