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公开(公告)号：US11303912B2
公开(公告)日：2022-04-12
申请号：US16385469
申请日：2019-04-16
IPC分类号： H04N19/14 , H04N19/44 , H04N19/105 , H04N19/176 , H04N19/186 , H04N19/196 , G06T5/00 , G06T5/50
摘要： The disclosure describes example of performing an inverse dynamic range adjustment (DRA) to a picture as part of outputting the picture from memory. A device for decoding video data includes a memory configured to store a picture in a DRA domain and a processor configured to determine that the picture in the dynamic range adjustment (DRA) domain stored in the memory is to be output from the memory, subsequent to determining that the picture in the DRA domain is to be output, perform a process of outputting the picture in the DRA domain, and at the process of outputting the picture in the DRA domain from the memory, apply inverse DRA to the picture.
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32.发明授权公开(公告)号：US11259023B2
公开(公告)日：2022-02-22
申请号：US16380520
申请日：2019-04-10
IPC分类号： H04N19/186 , H04N19/126 , H04N19/124 , H04N19/136 , H04N19/172 , H04N19/196 , H04N19/70 , G06T5/00 , G06T5/50
摘要： Techniques for decoding video data include determining a picture quantization parameter (QP) value of the picture of video data, determining an intermediate chroma QP offset value for a chroma QP value based on the picture QP value and a first function based on video characteristics of the picture of video data, determining the chroma QP value with a second function of the intermediate chroma QP offset value, and decoding the picture of video data using the chroma QP value.
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33.发明授权公开(公告)号：US11190779B2
公开(公告)日：2021-11-30
申请号：US16862485
申请日：2020-04-29
IPC分类号： H04N19/186 , H04N19/18 , H04N19/124 , H04N19/176 , G06T5/00 , H04N19/85
摘要： A device for processing high dynamic range and/or wide color gamut (HDR/WCG) video data can be configured to determine a quantization parameter for quantized transform coefficients of a block of the HDR/WCG video data; inverse quantize the quantized transform coefficients based on the determined quantization parameter to determine dequantized transform coefficients; based on the dequantized transform coefficients, determine a block of residual values for the block of the HDR/WCG video data; based on the block of residual values, determine a reconstructed block for the block of the HDR/WCG video data; determine one or more dynamic range adjustment (DRA) parameters for the block of the HDR/WCG video data; adjust the one or more DRA parameters based on the determined quantization parameter to determine one or more adjusted DRA parameters; and perform DRA on the reconstructed block of the HDR/WCG video data using the one or more adjusted DRA parameters.
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34.发明申请公开(公告)号：US20210329304A1
公开(公告)日：2021-10-21
申请号：US17225801
申请日：2021-04-08
IPC分类号： H04N19/70 , H04N19/172 , H04N19/169
摘要： An example device for processing video data includes memory configured to store the video data and one or more processors implemented in circuitry and coupled to the memory. The one or more processors are configured to parse a first parameter set, the first parameter set being signaled in a bitstream data once per sequence of a group of encoded pictures. The one or more processors are configured to parse one or more dynamic range adjustment (DRA) syntax elements in a second parameter set, the second parameter set being signaled in the bitstream and being related to at least one picture in the group of encoded pictures, wherein the parsing of the one or more DRA syntax elements is not dependent on any syntax element of the first parameter set, and process the at least one picture based on the first parameter set and the second parameter set.
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公开(公告)号：US11153563B2
公开(公告)日：2021-10-19
申请号：US16816143
申请日：2020-03-11
IPC分类号： H04N19/117 , H04N19/103 , H04N19/176
摘要： In general, techniques are described by which to obtain combined in-loop filters for video coding. A device for coding video data comprising a memory and one or more processors may be configured to perform the techniques. The memory may store the video data. The one or more processors, which may be implemented in circuitry, are configured to implement a combined sample adaptive offset and bilateral filter. The combined sample adaptive offset and bilateral filter may be configured to obtain reconstructed samples of a current block of the video data, and perform filtering with respect to the reconstructed samples of the current block of the video data to obtain filtered reconstructed samples of the current block of the video data.
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公开(公告)号：US20210321107A1
公开(公告)日：2021-10-14
申请号：US17223814
申请日：2021-04-06
发明人： Dmytro Rusanovskyy , Jianle Chen , Yan Zhang , Marta Karczewicz
IPC分类号： H04N19/13 , H04N19/91 , H04N19/70 , H04N19/186 , H04N19/176
摘要： A method of decoding video data comprises determining, based on a color format of a picture of the video data, which context model from among a first context model and a second context model to use to determine a context increment for a syntax element that indicates a prefix of an x or y coordinate of a last significant transform coefficient of a color component of a block of the picture; and decoding a bin of the syntax element by applying Context Adaptive Binary Arithmetic Coding (CABAC) using a context determined based on the context increment for the syntax element.
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公开(公告)号：US11146823B2
公开(公告)日：2021-10-12
申请号：US16911003
申请日：2020-06-24
IPC分类号： H04N19/70 , H04N19/176 , H04N19/186 , H04N19/126
摘要： A method of decoding video data includes receiving a first chroma quantization parameter (QP) mapping table in an encoded video bitstream, determining a first chroma QP value for a first chroma block of video data from a luma QP value and the first chroma QP mapping table, decoding the first chroma block of video data using the first chroma QP value.
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38.发明申请公开(公告)号：US20210281844A1
公开(公告)日：2021-09-09
申请号：US17192335
申请日：2021-03-04
发明人： Dmytro Rusanovskyy , Yan Zhang
IPC分类号： H04N19/124 , H04N19/186 , H04N19/70
摘要： An example device for processing video data includes memory configured to store the video data and one or more processors coupled to the memory. The one or more processors are configured to adjust a chroma dynamic range adjustment (DRA) scale value based on a luma DRA scale value and determine a chroma quantization parameter (QP) based on the luma adjusted chroma DRA scale value, wherein the chroma QP comprises an integer component and a fractional component. The one or more processors are configured to determine an integer chroma QP offset based on the integer component and determine a fractional chroma QP offset based on the fractional component. The one or more processors are configured to determine a DRA chroma scale adjustment value based on the integer chroma QP offset and the fractional chroma QP offset and process the video data based on the DRA chroma scale adjustment value.
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公开(公告)号：US11064196B2
公开(公告)日：2021-07-13
申请号：US16557471
申请日：2019-08-30
IPC分类号： H04N19/117 , H04N19/136 , H04N19/82 , H04N19/96 , H04N19/159
摘要： Embodiments includes systems, methods and devices for encoding and decoding video data. For example, a video encoder or decoder may be configured to apply a bilateral filter to a sample of a reconstructed transform block. The bilateral filter may be defined as a piece-wise parameterizable function for generating filter weights.
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公开(公告)号：US20210014535A1
公开(公告)日：2021-01-14
申请号：US16924941
申请日：2020-07-09
摘要： A device for coding video data, the device comprising a memory configured to store video data; and one or more processors implemented in circuitry and configured to: code a value for a profile indicator syntax element in a bitstream including video data, the value for the profile indicator representing a class of a profile to which the bitstream conforms; code one or more values representing one or more coding-tool-specific constraints, separate from the profile indicator syntax element, each of the coding-tool-specific constraints indicating whether coding tools corresponding to the coding-tool-specific constraints can be enabled for at least a subset of the bitstream; and code the video data according to the coding-tool-specific constraints and the class of the profile.
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