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On DCT coefficient distribution in video coding using quad-tree structured partition

Title
On DCT coefficient distribution in video coding using quad-tree structured partition
Authors
Kang J.-W.Kim C.-S.
Ewha Authors
강제원
SCOPUS Author ID
강제원scopus
Issue Date
2014
Journal Title
2014 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2014
Publisher
Institute of Electrical and Electronics Engineers Inc.
Indexed
SCOPUS scopus
Abstract
The recent image/video coding standards adopt a full quad-tree structured block partitioning with a number of different transform sizes. However, the statistical behavior of the transformed coefficients becomes more difficult to estimate than the previous standards while the single pdf might be enough for modeling the distribution in the previous standards. In this paper, we propose a novel probability density to model the distribution of the transformed coefficients obtained from different transform sizes. The proposed density model is mathematically derived, and the parameters are estimated from previously coded samples. Rate-Distortion (R-D) model is also established from the proposed density model. It is shown in experimental results that the proposed pdf is efficiently used for approximating the rate-distortion (R-D) relation when the different transform sizes are adapted for a coding. © 2014 Asia-Pacific Signal and Information Processing Ass.
DOI
10.1109/APSIPA.2014.7041654
ISBN
9786163618238
Appears in Collections:
엘텍공과대학 > 전자공학과 > Journal papers
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