Patents by Inventor XIAOYAN CHAI
XIAOYAN CHAI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230362379Abstract: A video colour component prediction method and apparatus, and a computer storage medium are provided. The prediction method includes: obtaining a first colour component neighboring reference value and a first colour component reconstructed value corresponding to a current coding block, wherein the first colour component neighboring reference value represents a first colour component parameter corresponding to a neighboring reference sample of the current coding block, and the first colour component reconstructed value represents one or more reconstruction parameters of a first colour component corresponding to the current coding block; determining a weight coefficient corresponding to the neighboring reference sample; determining a scale factor according to the weight coefficient and the first colour component neighboring reference value; and obtaining a second colour component predicted value corresponding to the current coded block based on a linear model corresponding to the scale factor.Type: ApplicationFiled: July 17, 2023Publication date: November 9, 2023Inventors: JUNYAN HUO, XIAOYAN CHAI, YANZHUO MA, FUZHENG YANG
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Patent number: 11812057Abstract: An intra prediction method and device and a computer storage medium are provided. The intra prediction method includes that: a width-to-height radio of a present coding block and a width-to-height radio of a reference block are acquired, the reference block being a coding block correlated with the present coding block (S101); when the width-to-height radio of the present coding block is different from the width-to-height radio of the reference block, an angular replacement prediction mode corresponding to the reference block is adjusted to obtain a adjusted angular replacement prediction mode, the angular replacement prediction mode being an extended angular prediction mode under a wide-angle mode (S102); and a prediction mode list of the present coding block is constructed based on the adjusted angular replacement prediction mode for intra prediction of the present coding block (S103).Type: GrantFiled: July 1, 2021Date of Patent: November 7, 2023Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.Inventors: Junyan Huo, Yanzhuo Ma, Fuzheng Yang, Shuai Wan, Xiaoyan Chai
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Patent number: 11743466Abstract: A video colour component prediction method and apparatus, and a computer storage medium are provided. The prediction method includes: obtaining a first colour component neighboring reference value and a first colour component reconstructed value corresponding to a current coding block, wherein the first colour component neighboring reference value represents a first colour component parameter corresponding to a neighboring reference sample of the current coding block, and the first colour component reconstructed value represents one or more reconstruction parameters of a first colour component corresponding to the current coding block; determining a weight coefficient corresponding to the neighboring reference sample; determining a scale factor according to the weight coefficient and the first colour component neighboring reference value; and obtaining a second colour component predicted value corresponding to the current coded block based on a linear model corresponding to the scale factor.Type: GrantFiled: October 21, 2021Date of Patent: August 29, 2023Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.Inventors: Junyan Huo, Xiaoyan Chai, Yanzhuo Ma, Fuzheng Yang
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Patent number: 11503312Abstract: A method and device for predicting colour component and a computer storage medium are provided. The method includes: acquiring at least one threshold value according to first colour component reconstructed values of all samples of a current coding block; performing grouping according to comparison results between a first colour component neighboring reference values of current coding block and the at least one threshold value to obtain at least two groups of first colour component neighboring reference values and second colour component neighboring reference values; establishing at least two computing models; selecting, according to comparison results between the first colour component reconstructed values and at least one threshold value, a computing model corresponding to each sample in current coding block from at least two computing models; and acquiring, according to the computing model corresponding to each sample, second colour component prediction values of all samples in the current coding block.Type: GrantFiled: February 8, 2021Date of Patent: November 15, 2022Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.Inventors: Junyan Huo, Xiaoyan Chai, Yanzhuo Ma, Fuzheng Yang
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Publication number: 20220038699Abstract: A video colour component prediction method and apparatus, and a computer storage medium are provided. The prediction method includes: obtaining a first colour component neighboring reference value and a first colour component reconstructed value corresponding to a current coding block, wherein the first colour component neighboring reference value represents a first colour component parameter corresponding to a neighboring reference sample of the current coding block, and the first colour component reconstructed value represents one or more reconstruction parameters of a first colour component corresponding to the current coding block; determining a weight coefficient corresponding to the neighboring reference sample; determining a scale factor according to the weight coefficient and the first colour component neighboring reference value; and obtaining a second colour component predicted value corresponding to the current coded block based on a linear model corresponding to the scale factor.Type: ApplicationFiled: October 21, 2021Publication date: February 3, 2022Inventors: JUNYAN HUO, XIAOYAN CHAI, YANZHUO MA, FUZHENG YANG
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Patent number: 11218701Abstract: A video colour component prediction method and apparatus, and a computer storage medium are provided. The prediction method includes: obtaining a first colour component neighboring reference value and a first colour component reconstructed value corresponding to a current coding block, wherein the first colour component neighboring reference value represents a first colour component parameter corresponding to a neighboring reference sample of the current coding block, and the first colour component reconstructed value represents one or more reconstruction parameters of a first colour component corresponding to the current coding block; determining a weight coefficient corresponding to the neighboring reference sample; determining a scale factor according to the weight coefficient and the first colour component neighboring reference value; and obtaining a second colour component predicted value corresponding to the current coded block based on a linear model corresponding to the scale factor.Type: GrantFiled: February 8, 2021Date of Patent: January 4, 2022Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.Inventors: Junyan Huo, Xiaoyan Chai, Yanzhuo Ma, Fuzheng Yang
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Publication number: 20210329297Abstract: An intra prediction method and device and a computer storage medium are provided. The intra prediction method includes that: a width-to-height radio of a present coding block and a width-to-height radio of a reference block are acquired, the reference block being a coding block correlated with the present coding block (S101); when the width-to-height radio of the present coding block is different from the width-to-height radio of the reference block, an angular replacement prediction mode corresponding to the reference block is adjusted to obtain a adjusted angular replacement prediction mode, the angular replacement prediction mode being an extended angular prediction mode under a wide-angle mode (S102); and a prediction mode list of the present coding block is constructed based on the adjusted angular replacement prediction mode for intra prediction of the present coding block (S103).Type: ApplicationFiled: July 1, 2021Publication date: October 21, 2021Inventors: JUNYAN HUO, YANZHUO MA, FUZHENG YANG, SHUAI WAN, XIAOYAN CHAI
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Publication number: 20210160505Abstract: A video colour component prediction method and apparatus, and a computer storage medium are provided. The prediction method includes: obtaining a first colour component neighboring reference value and a first colour component reconstructed value corresponding to a current coding block, wherein the first colour component neighboring reference value represents a first colour component parameter corresponding to a neighboring reference sample of the current coding block, and the first colour component reconstructed value represents one or more reconstruction parameters of a first colour component corresponding to the current coding block; determining a weight coefficient corresponding to the neighboring reference sample; determining a scale factor according to the weight coefficient and the first colour component neighboring reference value; and obtaining a second colour component predicted value corresponding to the current coded block based on a linear model corresponding to the scale factor.Type: ApplicationFiled: February 8, 2021Publication date: May 27, 2021Inventors: JUNYAN HUO, XIAOYAN CHAI, YANZHUO MA, FUZHENG YANG
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Publication number: 20210160515Abstract: A method and device for predicting colour component and a computer storage medium are provided. The method includes: acquiring at least one threshold value according to first colour component reconstructed values of all samples of a current coding block; performing grouping according to comparison results between a first colour component neighboring reference values of current coding block and the at least one threshold value to obtain at least two groups of first colour component neighboring reference values and second colour component neighboring reference values; establishing at least two computing models; selecting, according to comparison results between the first colour component reconstructed values and at least one threshold value, a computing model corresponding to each sample in current coding block from at least two computing models; and acquiring, according to the computing model corresponding to each sample, second colour component prediction values of all samples in the current coding block.Type: ApplicationFiled: February 8, 2021Publication date: May 27, 2021Inventors: Junyan HUO, Xiaoyan CHAI, Yanzhuo MA, Fuzheng YANG