DocumentCode
959843
Title
Adaptive cosine transform coding of images in perceptual domain
Author
Ngan, King N. ; Leong, Kin S. ; Singh, H.
Author_Institution
Nat. Univ. of Singapore, Singapore
Volume
37
Issue
11
fYear
1989
fDate
11/1/1989 12:00:00 AM
Firstpage
1743
Lastpage
1750
Abstract
An adaptive cosine transform coding scheme for color images which incorporates human visual properties into the coding scheme is described. It employs adaptive quantization to exploit the statistical nature of the coefficients and adaptive block distortion equalization to reduce the block edge structures inherent in block transform coding schemes. Results show that the subjective quality of the reconstructed images at a bit rate of 0.4 bit/pixel or a compression ratio of 60:1 is very good
Keywords
encoding; picture processing; adaptive block distortion equalization; adaptive cosine transform coding; adaptive quantization; color images; human visual properties; image coding; Acoustic distortion; Adaptive equalizers; Bit rate; Compaction; Dynamic range; Humans; Image coding; Pixel; Quantization; Transform coding;
fLanguage
English
Journal_Title
Acoustics, Speech and Signal Processing, IEEE Transactions on
Publisher
ieee
ISSN
0096-3518
Type
jour
DOI
10.1109/29.46556
Filename
46556
Link To Document