Computation reduction in high-efficiency video coding based on the similarity of transform unit blocks

Chen, Zong Yi; Fang, Jiunn Tsair; Chiang, Chung Shian; Chang, Pao-Chi

doi:10.1117/1.jei.23.6.061105

Cited by 2 publications

(5 citation statements)

References 19 publications

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“…Compared the performance with [5] the BDBR of our proposed method increases smaller. The reason is that values between split and non-split blocks are distinct, and we use adaptive threshold to early terminate the RQT procedure.…”

Section: Resultsmentioning

confidence: 91%

“…Both the two kinds of information are acquired after discrete cosine transform (DCT). However, to further accelerate the encoding process, [5] extended the concept of zero block detection in H.264 [6] and combined the property of zero block inheritance (ZBI) [7] to early skip or terminate the RQT processes.…”

Section: Related Workmentioning

confidence: 99%

“…The residual of subblocks were calculated as residual difference to train threshold, and the early termination or early skip of TU procedure was performed. The residual difference method was further combined with the zero-block detection [5] to early determine the TU depth. We also proposed a method to remove the redundant TU search.…”

Section: Proposed Fast Tu Decision Algorithmmentioning

confidence: 99%

“…In [5], the prediction residual was analyzed and used as the representation for block similarity. The block similarity tends to be related to the TU mode decision.…”

Section: Residual Differencementioning

confidence: 99%

“…To achieve more accurate and faster coding efficiency, the zero block detection algorithm [5] was combined in the proposed scheme. The main concept is that the DC value is considered the largest transform coefficient in the whole block usually.…”

Section: Zero Block Detectionmentioning

confidence: 99%

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A Fast TU Mode Decision Algorithm Based on Residual Difference for HEVC

Liang

chen

et al. 2017

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High Efficiency Video Coding (HEVC) is the latest video coding standard. The residual quadtree (RQT) coding structure which provides variable block size for transform coding, is adopted in HEVC to achieve high coding efficiency. However, compared with previous standards, encoding complexity is increased significantly in HEVC due to the advanced encoding structure. A fast transform unit (TU) mode decision algorithm using residual difference is proposed in this paper to reduce the computational complexity. The proposed algorithm utilized the residual difference to determine the criterion of early TU termination and early TU skip. The threshold was trained from the beginning samples of each sequence. Experimental results showed that the proposed algorithm saves up to 75.64% and on average 64% TU encoding time compared with HM 15.0 in low delay P configuration and the loss of average BD-BR is less than 0.5%.

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Section: Resultsmentioning

confidence: 91%

Section: Related Workmentioning

confidence: 99%

Section: Proposed Fast Tu Decision Algorithmmentioning

confidence: 99%

“…In [5], the prediction residual was analyzed and used as the representation for block similarity. The block similarity tends to be related to the TU mode decision.…”

Section: Residual Differencementioning

confidence: 99%

Section: Zero Block Detectionmentioning

confidence: 99%

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