Rate-distortion optimal fast thresholding with complete JPEG/MPEG decoder compatibility.
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.
Ramchandran
K
K
Dept. of Electr. and Comput. Eng., Illinois Univ., Urbana, IL.
Vetterli
M
M