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Structured sparse representation of residue in screen content video coding

Title
Structured sparse representation of residue in screen content video coding
Authors
Kang, J. -W.
Ewha Authors
강제원
SCOPUS Author ID
강제원scopus
Issue Date
2015
Journal Title
ELECTRONICS LETTERS
ISSN
0013-5194JCR Link1350-911XJCR Link
Citation
vol. 51, no. 23, pp. 1871 - 1872
Publisher
INST ENGINEERING TECHNOLOGY-IET
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
A novel transform method providing a regionally structured sparse model of residue for a video coding is proposed. Conventional learning-based video coding methods consider only the number of transformed coefficients in a dictionary construction but disregard any structural form of residue. A structural form of coefficients is used for another factor, specified by a set of local block patterns, in a transform design so as to yield the regionally compact distribution of the coefficients. A transform coefficient coding method is also developed because the distribution of the coefficients is different with that of conventional transforms. It is demonstrated with experiments that the proposed method outperforms the coding efficiency and visual quality over high efficiency video coding/screen content coding reference software.
DOI
10.1049/el.2015.0746
Appears in Collections:
엘텍공과대학 > 전자공학과 > Journal papers
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