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Journal Article
Shuffled Discrete Sine Transform in Inter-Prediction Coding
- Authors
- Jun-woo Choi, Nam-Uk Kim, Sung-Chang Lim, Jungwon Kang, Hui Yong Kim, Yung-Lyul Lee
- Issue Date
- 2017-10
- Citation
- ETRI Journal, v.39, no.5, pp.672-682
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- Abstract
- Video compression exploits statistical, spatial, and temporal redundancy, as well as transform and quantization. In particular, the transform in a frequency domain plays a major role in energy compaction of spatial domain data into frequency domain data. The high efficient video coding standard uses the type-II discrete cosine transform (DCT-II) and type-VII discrete sine transform (DST-VII) to improve the coding efficiency of residual data. However, the DST-VII is applied only to the Intra 4 3 4 residual block because it yields relatively small gains in the larger block than in the 4 3 4 block. In this study, after rearranging the data of the residual block, we apply the DST-VII to the inter-residual block to achieve coding gain. The rearrangement of the residual block data is similar to the arrangement of the basis vector with a the lowest frequency component of the DST-VII. Experimental results show that the proposed method reduces the luma-chroma (Cb+Cr) BD rates by approximately 0.23% to 0.22%, 0.44% to 0.58%, and 0.46% to 0.65% for the random access, low delay B, and low delay P configurations, respectively.
- KSP Keywords
- Coding Gain, Coding efficiency, DCT-II, DST-VII, Discrete cosine Transform, Discrete sine transform(DST), Energy compaction, Frequency components, Frequency domain(FD), High Efficiency Video coding(HEVC), Low delay
This work is distributed under the term of Korea Open Government License (KOGL)
(Type 4: : Type 1 + Commercial Use Prohibition+Change Prohibition)
(Type 4: : Type 1 + Commercial Use Prohibition+Change Prohibition)
