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1. 绍兴文理学院计算机科学与工程系,浙江 绍兴 312000
2. 同济大学超大规模集成电路研究所,上海 200092
[ "赵利平(1984-),女,博士,绍兴文理学院计算机科学与工程系讲师,主要研究方向为高效视频编码、屏幕图像编码。" ]
[ "林涛(1958-),男,博士,同济大学超大规模集成电路研究所长江学者特聘教授,主要研究方向为高效视频编码、屏幕图像编码、多媒体芯片设计等。" ]
[ "周开伦(1977-),男,博士,同济大学超大规模集成电路研究所讲师,主要研究方向为视频编码、超大规模集成电路架构、设计与验证。" ]
[ "胡珂立(1989-),男,博士,绍兴文理学院计算机科学与工程系讲师,主要研究方向为图像处理、目标跟踪。" ]
[ "林春梅(1961-),女,博士,绍兴文理学院计算机科学与工程系副教授,主要研究方向为机器学习。" ]
网络出版日期:2018-04,
纸质出版日期:2018-04-20
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赵利平, 林涛, 周开伦, 等. 一种多色度格式级联编码的AVS2全色度图像编码算法[J]. 电信科学, 2018,34(4):57-67.
Liping ZHAO, Tao LIN, Kailun ZHOU, et al. A multi-chroma format cascaded coding method for full-chroma image in AVS2[J]. Telecommunications science, 2018, 34(4): 57-67.
赵利平, 林涛, 周开伦, 等. 一种多色度格式级联编码的AVS2全色度图像编码算法[J]. 电信科学, 2018,34(4):57-67. DOI: 10.11959/j.issn.1000-0801.2018122.
Liping ZHAO, Tao LIN, Kailun ZHOU, et al. A multi-chroma format cascaded coding method for full-chroma image in AVS2[J]. Telecommunications science, 2018, 34(4): 57-67. DOI: 10.11959/j.issn.1000-0801.2018122.
在我国最新的第二代数字音视频编解码算法标准(AVS2)的基础上,提出了一种多色度格式级联编码(MCFCC)的全色度(4:4:4采样格式)图像编码算法。MCFCC算法首先对4:4:4采样格式的图像进行色度下采样转换成4:2:0采样格式的图像,然后进行4:2:0采样格式的帧内预测、变换、量化、反量化、反变换、熵编码和在率—失真最优化过程中使用带权重的4:4:4采样格式的失真计算方案,最后将其上采样为4:4:4采样格式的预测补偿图像并采用4:4:4采样格式的环内滤波补偿算法。实验结果表明:对于全色度自然图像,MCFCC算法在低编码复杂度和低实现成本(完全复用4:2:0编解码模块)的前提下,综合编码效率进一步提高。
In the second generation of audio video coding standard (AVS2)
a multi-chroma format cascaded coding method (MCFCC) for full-chroma (4:4:4 sampling format) images coding was proposed.The MCFCC algorithm firstly converts the 4:4:4 sampling format image into 4:2:0 sampling format image
then the 4:2:0 sampling format image was processed by 4:2:0 sampling format intra prediction
transform
quantization
inverse quantization
inverse transform
entropy coding and a weighted 4:4:4 sampling format distortion calculation method in the rate-distortion optimization process
finally 4:4:4 sampling format in-loop filtering and offset algorithms were applied to the 4:4:4 sampling format image after up sampling.The experimental results show that
for full-chroma natural images
the MCFCC algorithm achieves higher coding efficiency at very low additional encoding complexity and very low additional design and implementation cost.
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AVS.AVS2-P2框架下对YUV4:4:4和YUV422 (CExt) 图像的编码:M4221 [S ] . 2017 .
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AVS.A method for calculating PSNR:M3830 [S ] . 2016 .
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