Design and Implementation for Chroma Extensions Video Coding Based on AVS2 Platform

Shuhui WANG

doi:10.11999/JEIT180154

Volume 40 Issue 12

Nov. 2018

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Article Navigation > Journal of Electronics & Information Technology > 2018 > 40(12): 2936-2944

Shuhui WANG. Design and Implementation for Chroma Extensions Video Coding Based on AVS2 Platform[J]. Journal of Electronics & Information Technology, 2018, 40(12): 2936-2944. doi: 10.11999/JEIT180154

Citation:

Shuhui WANG. Design and Implementation for Chroma Extensions Video Coding Based on AVS2 Platform[J]. Journal of Electronics & Information Technology, 2018, 40(12): 2936-2944. doi: 10.11999/JEIT180154

Shuhui WANG. Design and Implementation for Chroma Extensions Video Coding Based on AVS2 Platform[J]. Journal of Electronics & Information Technology, 2018, 40(12): 2936-2944. doi: 10.11999/JEIT180154

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Design and Implementation for Chroma Extensions Video Coding Based on AVS2 Platform

doi: 10.11999/JEIT180154

Shuhui WANG^,

College of Electronics and Information Engineering, Tongji University, Shanghai 201804, China

Funds: The National Natural Science Foundation of China (61601200, 61871289), Shanghai Natural Science Foundation (18ZR1440600)

Received Date: 2018-02-06
Rev Recd Date: 2018-09-14

Available Online: 2018-09-18

Publish Date: 2018-12-01

Abstract

Abstract

Chroma extensions video coding is a hot topic in the field of video coding. Chroma extensions video coding scheme based on AVS2 platform is proposed. The most direct solution is pseudo444/422 coding. In this method, chroma component in the input image is down sampled by averaging adjacent samples. The core coding modules are still 420 coding. Further, this paper seamlessly extends intra prediction and loop filter to the 444/422 chroma format to implement 444/422 intra prediction coding. The experimental results show that compared with pseudo444/422 coding, in the case of high bit rate, the average U/V BD-rate saving is 31.44%/31.72% and 18.85%/19.30% for 444 and 422 test sequences respectively, with negligible increase of Y BD-rate (0.5% on average). The modification of the 422 chroma intra prediction algorithm achieves up to 5.66% Y/U/V BD-rate reduction. 444/422 intra prediction coding provides similar or better coding performance than HEVC RExt coding at low bitrates.
- Chroma extensions video coding,
- Chroma subsampling,
- AVS2,
- Intra prediction

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References(18)

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