Title :
Efficient block-based coding of noisy images by combining pre-filtering and DCT
Author :
Kim, Sung Deuk ; Jang, Sung Kyu ; Kim, Myung Jun ; Ra, Jong Beom
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Taejon, South Korea
fDate :
9/30/1999 12:00:00 AM
Abstract :
An efficient block-based coding scheme for noisy images is proposed. Unlike a conventional encoder where pre-filtering, discrete cosine transforms (DCT), quantisation, and variable length coding (VLC) are cascaded, the proposed image coder has only a modified DCT and a VLC and performs pre-filtering and quantisation simultaneously in the modified DCT operation
Keywords :
block codes; discrete cosine transforms; image coding; quantisation (signal); variable length codes; DCT; VLC; block-based coding; noisy images; pre-filtering; quantisation; variable length coding;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19991210
