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.
Touradj Ebrahimi, Michela Testolina, Davi Nachtigall Lazzarotto
Michael Christoph Gastpar, Sung Hoon Lim, Adriano Pastore, Chen Feng
Touradj Ebrahimi, Pinar Akyazi