Iterative blocking artefact reduction based on local contrast information

Saleem, Amina, Beghdadi, Azeddine, Chetouani, Aladine and Boashash, Boualem (2011). Iterative blocking artefact reduction based on local contrast information. In: 2011 IEEE International Symposium On Signal Processing and Information Technology (ISSPIT). IEEE International Symposium on Signal Processing and Information Technology (ISSPIT), Bilbao, Spain, (363-368). 14-17 December 2011. doi:10.1109/ISSPIT.2011.6151589


Author Saleem, Amina
Beghdadi, Azeddine
Chetouani, Aladine
Boashash, Boualem
Title of paper Iterative blocking artefact reduction based on local contrast information
Conference name IEEE International Symposium on Signal Processing and Information Technology (ISSPIT)
Conference location Bilbao, Spain
Conference dates 14-17 December 2011
Proceedings title 2011 IEEE International Symposium On Signal Processing and Information Technology (ISSPIT)
Place of Publication Piscataway, NJ, United States
Publisher IEEE
Publication Year 2011
Sub-type Fully published paper
DOI 10.1109/ISSPIT.2011.6151589
Open Access Status
ISBN 9781467307529
9781467307512
Start page 363
End page 368
Total pages 6
Language eng
Abstract/Summary Block based transform coding is the most popular technique for image and video compression. However, images compressed using block based algorithms exhibit highly visible blocking artifacts. We propose an iterative algorithm to reduce these artifacts using a map computed by summation of the horizontal and vertical profiles of the gradient vector magnitude. This map is then used as an input to a recursive filter to reduce the blocking effect. The results of the proposed method have been compared to some recent and efficient deblocking algorithms. Experimental results show that the proposed method is simple and yields a subjective quality that is nearly free of blocking artifacts.
Keyword Blocking
Recursive filter
Gradient
Radon transform
Images
Dct
Deblocking
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Conference Paper
Collection: UQ Centre for Clinical Research Publications
 
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