17 February 1995 Design of adaptive quantizer for motion picture experts group (MPEG) video coding
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Abstract
In this paper, we design a new quantizer on studying the strategy for adaptive quantization proposed by MPEG-2 TM5. To exploit local perceptual characteristics in the macroblock, block-based visual activities are analyzed and then macroblock characteristic is identified by evaluating each block's local activity within it comprehensively to decide the adaptive perceptual quantization factor. Experiment results show that coding distortion is uniformly distributed across the image with the proposed quantizer, and picture quality is improved. In particular, block artifacts in flat area and distortion at edges on flat backgrounds are significantly reduced.
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Jun Sun, Jun Sun, Wenjun Zhang, Wenjun Zhang, Songyu Yu, Songyu Yu, } "Design of adaptive quantizer for motion picture experts group (MPEG) video coding", Proc. SPIE 2451, Advanced Image and Video Communications and Storage Technologies, (17 February 1995); doi: 10.1117/12.201211; https://doi.org/10.1117/12.201211
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