DocumentCode
1468410
Title
Blocking artefact removal based on frequency analysis
Author
Huang, Jiwu ; Shi, Yun Q. ; Dai, Xianhua
Author_Institution
Dept. of Electron. Eng., Shantou Univ., Guangdong, China
Volume
34
Issue
24
fYear
1998
fDate
11/26/1998 12:00:00 AM
Firstpage
2323
Lastpage
2325
Abstract
An adaptive filtering algorithm for artefact removal in block coded images is presented. Based on an analysis of block artefacts in the frequency domain, the edge image is notch filtered and then used for a neighbourhood analysis. A space-variant filter is applied to the coded image adaptively, dependent on a frequency analysis
Keywords
adaptive filters; block codes; edge detection; filtering theory; frequency-domain analysis; image coding; image restoration; notch filters; spatial filters; adaptive filtering algorithm; block coded image; blocking artefact removal; edge image; frequency domain analysis; neighbourhood analysis; notch filtering; space-variant filter;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19981609
Filename
743023
Link To Document