Title :
Rate-distortion optimal fast thresholding with complete JPEG/MPEG decoder compatibility
Author :
Ramchandran, Kannan ; Vetterli, Martin
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA
fDate :
9/1/1994 12:00:00 AM
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
Keywords :
convolutional codes; decoding; discrete cosine transforms; dynamic programming; image coding; image sequences; DCT coefficients; JPEG compression standard; JPEG/MPEG decoder compatibility; MPEG compression standard; fast dynamic programming recursive structure; fast thresholding; optimal algorithm; rate-distortion method; still image compression; video sequence compression; Bit rate; Computational complexity; Decoding; Discrete cosine transforms; Dynamic programming; Image coding; Quantization; Rate-distortion; Transform coding; Video sequences;
Journal_Title :
Image Processing, IEEE Transactions on
