DocumentCode
1438501
Title
Efficient method for early detection of all-zero DCT coefficients
Author
Jun, Shi ; Yu, Songyu
Author_Institution
Inst. of Image Commun. & Inf. Process., Shanghai Jiaotong Univ., China
Volume
37
Issue
3
fYear
2001
fDate
2/1/2001 12:00:00 AM
Firstpage
160
Lastpage
161
Abstract
Based on the existing method, a more efficient algorithm for detecting all-zero DCT coefficient blocks before implementation of the discrete cosine transform and quantisation in very low bit rate video coding is proposed. The problem of the existing method is shown and an improved algorithm is provided. Simulation shows that the new method improves the detecting performance by ~10-20%
Keywords
discrete cosine transforms; video coding; videotelephony; DCT coefficient blocks; all-zero DCT coefficients; discrete cosine transform; early detection; quantisation; very low bit rate video coding; videophone applications;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:20010171
Filename
902787
Link To Document