Direct splitting and merging of 2-D DCT in the DCT domain

Yuh Jue Chuang; Ja Ling Wu

doi:10.1016/j.dsp.2004.07.001

Direct splitting and merging of 2-D DCT in the DCT domain

Yuh Jue Chuang, Ja Ling Wu

Research output: Contribution to journal › Journal Article › peer-review

5 Scopus citations

Abstract

An efficient method for splitting an 8 × 8 2-D DCT block into four 4 × 4, two 8 × 4 (or 4 × 8) 2-D DCT blocks is presented in this paper. The reverse direction (the "merge" case) also can be realized by inverse transposing the given matrix operations in the "split" case. The computational complexity of the proposed methods is lower than that of the direct approach and other known efficient converting approaches. Due to its efficiency, the proposed DCT splitter/merger will play an important role in realizing the transcoding between the latest video coding standard, AVC/H.264, and the older ones, such as MPEG-1, MPEG-2, and MPEG-4 part 2.

Original language	English
Pages (from-to)	614-624
Number of pages	11
Journal	Digital Signal Processing: A Review Journal
Volume	14
Issue number	6
DOIs	https://doi.org/10.1016/j.dsp.2004.07.001
State	Published - 11 2004
Externally published	Yes

Keywords

DCT splitter and/or merger
Discrete cosine transform
Efficient DCT-domain algorithm
MPEG-2-to-AVC/H.264 transcoder

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10.1016/j.dsp.2004.07.001

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title = "Direct splitting and merging of 2-D DCT in the DCT domain",

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T1 - Direct splitting and merging of 2-D DCT in the DCT domain

AU - Chuang, Yuh Jue

AU - Wu, Ja Ling

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AB - An efficient method for splitting an 8 × 8 2-D DCT block into four 4 × 4, two 8 × 4 (or 4 × 8) 2-D DCT blocks is presented in this paper. The reverse direction (the "merge" case) also can be realized by inverse transposing the given matrix operations in the "split" case. The computational complexity of the proposed methods is lower than that of the direct approach and other known efficient converting approaches. Due to its efficiency, the proposed DCT splitter/merger will play an important role in realizing the transcoding between the latest video coding standard, AVC/H.264, and the older ones, such as MPEG-1, MPEG-2, and MPEG-4 part 2.

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KW - Discrete cosine transform

KW - Efficient DCT-domain algorithm

KW - MPEG-2-to-AVC/H.264 transcoder

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DO - 10.1016/j.dsp.2004.07.001

M3 - 文章

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SN - 1051-2004

VL - 14

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EP - 624

JO - Digital Signal Processing: A Review Journal

JF - Digital Signal Processing: A Review Journal

IS - 6

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Direct splitting and merging of 2-D DCT in the DCT domain

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Keywords

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