An improved Huber-MAP post filtering method for DCT-based compressed video sequences

Yang, J and Wu, H 2008, 'An improved Huber-MAP post filtering method for DCT-based compressed video sequences', in F. Maloberti, S. Mitra and P. Micallef (ed.) 2008 3rd International Symposium on Communications, Control and Signal Processing, St Julians, Malta, 12-14 March 2008, pp. 1014-1019.


Document type: Conference Paper
Collection: Conference Papers

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Title An improved Huber-MAP post filtering method for DCT-based compressed video sequences
Author(s) Yang, J
Wu, H
Year 2008
Conference name 2008 3rd International Symposium on Commumications, Control and Signal Processing (ISCCSP 2008)
Conference location St Julians, Malta
Conference dates 12-14 March 2008
Proceedings title 2008 3rd International Symposium on Communications, Control and Signal Processing
Editor(s) F. Maloberti
S. Mitra
P. Micallef
Publisher IEEE
Place of publication Piscataway, USA
Start page 1014
End page 1019
Total pages 6
Abstract Maximum a posteriori (MAP) post processing is widely investigated to reduce digital video or image coding artifacts. Many MAP post-filtering methods have adopted the Huber-Markov random field (HMRF) as a prior probability model. However, a drawback of the Huber-MAP post-filter is that it blurs image structures and details in video sequences when removing coding artifacts, such as blocking and ringing. This paper proposed an improved prior model to preserve edge information in images of video sequences as well as to reduce coding artifacts. Experimental results show the performance improvements of the proposed approach over the Huber-MAP post-filter. The performance of the proposed approach is also comparable to that of the H.264 post-filter, in terms of the peak signal to noise ratio (PSNR) and the visual picture quality.
Subjects Electrical and Electronic Engineering not elsewhere classified
Image Processing
Keyword(s) edge preservation
artifact reduction
post processing
maximum a posteriori
Huber-Markov random field
DOI - identifier 10.1109/ISCCSP.2008.4537372
Copyright notice © 2008 IEEE
ISBN 978-1-4244-1687-5
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