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

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2 Author(s)
Ramchandran, K. ; Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA ; Vetterli, M.

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

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Image Processing, IEEE Transactions on  (Volume:3 ,  Issue: 5 )