MINMAX rate control with a perceived distortion metric

Yegnaswamy Sermadevi; Mark Masry; Sheila S. Hemami

doi:10.1117/12.527254

18 January 2004 MINMAX rate control with a perceived distortion metric

Yegnaswamy Sermadevi, Mark Masry, Sheila S. Hemami

Proceedings Volume 5308, Visual Communications and Image Processing 2004; (2004) https://doi.org/10.1117/12.527254
Event: Electronic Imaging 2004, 2004, San Jose, California, United States

Abstract

This paper presents a Rate-Distortion based optimization procedure for video coding that explicitly incorporates a perceptual distortion measure. A flexible MINMAX (minimizing the maximum distortion) optimization procedure based on Linear Programming (LP) is used to minimize the variation in distortion across frames. The distortion measure utilizes a multi-channel human vision model to generate a map of the perceived distortion at each pixel in a frame. This map is then collapsed into a single frame-level distortion. Lagrangian optimization is employed within each frame to assign macroblock-level quantization step-sizes that minimize this frame-level distortion. Coding results with MPEG-2 show a large reduction in peak perceived distortion with respect to TM5 as well as lower variation in distortion across the frames in the video sequence. Although results are presented for a specific metric, the LP based optimization procedure easily extends to other distortion measures.

Citation Download Citation

Yegnaswamy Sermadevi, Mark Masry, and Sheila S. Hemami "MINMAX rate control with a perceived distortion metric", Proc. SPIE 5308, Visual Communications and Image Processing 2004, (18 January 2004); https://doi.org/10.1117/12.527254

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