Rate-distortion optimal fast thresholding with complete JPEG/MPEG decoder compatibility.

Ramchandran, K; Vetterli, M · IEEE Trans Image Process · 1994

basic_science · Level V

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Abstract

We show a rate-distortion optimal way to threshold or drop the DCT coefficients of the JPEG and MPEG compression standards. Our optimal algorithm uses a fast dynamic programming recursive structure. The primary advantage of our approach lies in its complete compatibility with standard JPEG and MPEG decoders.