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Adaptive Transform Kernal Size Selection Algorithm for H.264/AVC Encoding

Authors
Kim, Jongho김병규Badrul, Hilmi
Issue Date
Mar-2010
Publisher
MedWell Publishing
Citation
International Journal of Soft Computing, v.5, no.1, pp 1 - 6
Pages
6
Journal Title
International Journal of Soft Computing
Volume
5
Number
1
Start Page
1
End Page
6
URI
https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/147941
DOI
10.3923/ijscomp.2010.1.6
ISSN
1816-9503
Abstract
The DCT 8x8 transform mode has been adopted for high profile encoding in H264/AVC in addition to 4x4 integer transform. We propose an efficient DCT 8x8 transform mode decision method to reduce the computational complexity of the transform mode decision. We observed that the average variance of the Direct Current (DC) coefficients is quite different according to the best DCT kernel size. We use the amount of variation of the DC coefficients after DCT 4x4 procedure as a classification feature for the proposed algorithm and make a adaptive threshold using the average of variance of DC coefficients. We verify that the proposed algorithm can reduce the 8x8 transform mode decision by amount of 47.35-65.53%.
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Kim, Byung Gyu
공과대학 (인공지능공학부)
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