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21. 发明申请

US20150103902A1 THREE-DIMENSIONAL LOOKUP TABLE BASED COLOR GAMUT SCALABILITY IN MULTI-LAYER VIDEO CODING 有权
标题翻译：基于三维视觉编码的基于三维查找表的彩色游戏可扩展性
公开(公告)号：US20150103902A1
公开(公告)日：2015-04-16
申请号：US14512177
申请日：2014-10-10
申请人： QUALCOMM Incorporated
发明人： Xiang Li , Krishnakanth Rapaka , Jianle Chen , Marta Karczewicz
IPC分类号： H04N13/00 , H04N19/597
CPC分类号： H04N13/161 , H04N13/194 , H04N19/30 , H04N19/42 , H04N19/597
摘要： Techniques are described for 3D lookup table based color gamut scalability in multi-layer video coding. A lower layer of video data may include color data in a first color gamut and a higher layer of the video data may include color data in a second color gamut. To generate inter-layer reference pictures, a video coder performs color prediction to convert the color data of a reference picture in the first color gamut to the second color gamut. The video coder may perform color prediction using a 3D lookup table. According to the techniques, the video coder generates at least one 3D lookup table having a size that is different for a luma component than for a first chroma component and a second chroma component. In this way, the total size of the table may be reduced while maintaining good coding performance.
摘要翻译：在多层视频编码中描述了基于3D查找表的色域可伸缩性的技术。视频数据的下层可以包括第一色域中的颜色数据，并且视频数据的较高层可以包括第二色域中的颜色数据。为了产生层间参考图像，视频编码器执行颜色预测以将第一色域中的参考图像的颜色数据转换为第二色域。视频编码器可以使用3D查找表来执行颜色预测。根据该技术，视频编码器生成至少一个具有与亮度分量不同的尺寸的3D查找表，而不是第一色度分量和第二色度分量。以这种方式，可以降低表的总大小，同时保持良好的编码性能。

22. 发明申请

US20140314140A1 INDICATION OF CROSS-LAYER PICTURE TYPE ALIGNMENT IN MULTI-LAYER VIDEO CODING 有权
标题翻译：多层视频编码中跨层图像对齐的指示
公开(公告)号：US20140314140A1
公开(公告)日：2014-10-23
申请号：US14254400
申请日：2014-04-16
申请人： QUALCOMM Incorporated
发明人： Krishnakanth Rapaka , Ye-Kui Wang , Jianle Chen , Marta Karczewicz
IPC分类号： H04N19/13 , H04N19/136 , H04N19/34 , H04N19/187
CPC分类号： H04N19/187 , H04N19/13 , H04N19/172 , H04N19/188 , H04N19/30 , H04N19/44 , H04N19/70
摘要： In one example, the disclosure is directed to techniques that include receiving a bitstream comprising at least a syntax element, a first network abstraction layer unit type, and a coded access unit comprising a plurality of pictures. The techniques further include determining a value of the syntax element which indicates whether the access unit was coded using cross-layer alignment. The techniques further include determining the first network abstraction layer unit type for a picture in the access unit and determining whether the first network abstraction layer unit type equals a value in a range of type values. The techniques further include setting a network abstraction layer unit type for all other pictures in the coded access unit to equal the value of the first network abstraction layer unit type if the first network abstraction layer unit type is equal to a value in the range of type values.
摘要翻译：在一个示例中，本公开涉及包括接收包括至少语法元素，第一网络抽象层单元类型和包括多个图片的编码访问单元的比特流的技术。这些技术还包括确定语法元素的值，该值指示访问单元是否使用跨层对齐进行编码。这些技术还包括确定访问单元中的图片的第一网络抽象层单元类型，并确定第一网络抽象层单元类型是否等于类型值范围内的值。所述技术还包括：如果第一网络抽象层单元类型等于类型范围内的值，则将经编码的访问单元中的所有其他图像的网络抽象层单元类型设置为等于第一网络抽象层单元类型的值价值观。

23. 发明申请

US20140254668A1 PARALLEL PROCESSING FOR VIDEO CODING 有权
标题翻译：并行处理视频编码
公开(公告)号：US20140254668A1
公开(公告)日：2014-09-11
申请号：US14196508
申请日：2014-03-04
申请人： QUALCOMM Incorporated
发明人： Krishnakanth Rapaka , Xiang Li , Jianle Chen , Ye-Kui Wang , Wei Pu
IPC分类号： H04N19/503
CPC分类号： H04N19/17 , H04N19/33 , H04N19/436 , H04N19/50 , H04N19/503 , H04N19/70 , H04N19/80 , H04N19/82
摘要： In one example, a device for coding video data includes a video coder configured to code a value for a syntax element representative of whether any two reference layer samples, collocated with two respective enhancement layer picture samples within a common enhancement layer tile, must be within a common reference layer tile, and code the enhancement layer picture samples based at least in part on the value of the syntax element.
摘要翻译：在一个示例中，用于对视频数据进行编码的设备包括视频编码器，该视频编码器被配置为对语法元素的值进行编码，该语法元素表示是否在公共增强层瓦片内与两个相应的增强层图像样本并置的任何两个参考层样本必须在公共参考层块，并且至少部分地基于语法元素的值来对增强层图像样本进行编码。

24. 发明授权

US10404992B2 Methods and systems of restricting bi-prediction in video coding 有权
公开(公告)号：US10404992B2
公开(公告)日：2019-09-03
申请号：US15219159
申请日：2016-07-25
申请人： QUALCOMM Incorporated
发明人： Krishnakanth Rapaka , Rajan Laxman Joshi , Vadim Seregin , Marta Karczewicz
IPC分类号： H04N19/00 , H04N19/513 , H04N19/159 , H04N19/174 , H04N19/105 , H04N19/176 , H04N19/593 , H04N19/127
摘要： Techniques and systems are provided for encoding video data. For example, restrictions on certain prediction modes can be applied for video coding. A restriction can be imposed that prevents inter-prediction bi-prediction from being performed on video data when certain conditions are met. For example, bi-prediction restriction can be based on whether intra-block copy prediction is enabled for one or more coding units or blocks of the video data, whether a value of a syntax element indicates that one or more motion vectors are in non-integer accuracy, whether both motion vectors of a bi-prediction block are in non-integer accuracy, whether the motion vectors of a bi-prediction block are not identical and/or are not from the same reference index, or any combination thereof. If one or more of these conditions are met, the restriction on bi-prediction can be applied, preventing bi-prediction from being performed on certain coding units or blocks.

25. 发明授权

US10264285B2 Coding runs in palette-based video coding 有权
公开(公告)号：US10264285B2
公开(公告)日：2019-04-16
申请号：US14719222
申请日：2015-05-21
申请人： QUALCOMM Incorporated
发明人： Rajan Laxman Joshi , Vadim Seregin , Wei Pu , Marta Karczewicz , Joel Sole Rojals , Krishnakanth Rapaka
IPC分类号： H04N19/176 , H04N19/182 , H04N19/70 , H04N19/129 , H04N19/93 , H04N19/18 , H04N19/186 , H04N19/13 , H04N19/91 , H04N19/167
摘要： In an example, a method of coding video data includes determining, for a pixel associated with a palette index that relates a value of the pixel to a color value in a palette of colors used for coding the pixel, a run length of a run of palette indices being coded with the palette index of the pixel, the method also includes determining a maximum run length for a maximum run of palette indices able to be coded with the palette index of the pixel, and coding data that indicates the run length based on the determined maximum run length.

26. 发明授权

US10158836B2 Clipping for cross-component prediction and adaptive color transform for video coding 有权
公开(公告)号：US10158836B2
公开(公告)日：2018-12-18
申请号：US15006563
申请日：2016-01-26
申请人： QUALCOMM Incorporated
发明人： Cheng-Teh Hsieh , Vadim Seregin , Jianle Chen , Rajan Laxman Joshi , Krishnakanth Rapaka , Marta Karczewicz
IPC分类号： H04N9/79 , H04N11/04 , H04N11/02 , H04N9/64 , H04N11/24 , H04N21/2383 , H04N19/13 , H04N19/52 , H04N19/82 , H04N21/438 , H04N19/124 , H04N19/61 , H04N21/61 , H04N19/149 , H04N19/176 , H04N19/44 , H04N19/625 , H04N19/96 , H04N19/186 , H04N19/42 , H04N19/184 , H04N5/355
摘要： A device for encoding or decoding video data may clip first residual data based on a bit depth of the first residual data. The device may generate second residual data at least in part by applying an inverse Adaptive Color Transform (IACT) to the first residual data. Furthermore, the device may reconstruct, based on the second residual data, a coding block of a coding unit (CU) of the video data.

27. 发明授权

US10075729B2 Signaling of view ID bit depth in parameter sets 有权
公开(公告)号：US10075729B2
公开(公告)日：2018-09-11
申请号：US14329416
申请日：2014-07-11
申请人： QUALCOMM Incorporated
发明人： Ye-Kui Wang , Krishnakanth Rapaka
IPC分类号： H04N7/12 , H04N11/02 , H04N11/04 , H04N19/52 , H04N19/597 , H04N19/70 , H04N19/46 , H04N19/30 , H04N19/184 , H04N19/187 , H04N19/44
CPC分类号： H04N19/52 , H04N19/184 , H04N19/187 , H04N19/30 , H04N19/44 , H04N19/46 , H04N19/597 , H04N19/70
摘要： An apparatus for encoding video information according to certain aspects includes a memory and computing hardware. The memory is configured to store video information. The computing hardware is configured to determine a bit depth of one or more view identifiers to signal, wherein each of the one or more view identifiers is associated with a layer to be encoded. The computing hardware is further configured to signal the bit depth of the one or more view identifiers in a bitstream.

28. 发明授权

US10038915B2 Escape sample coding in palette-based video coding 有权
公开(公告)号：US10038915B2
公开(公告)日：2018-07-31
申请号：US14719215
申请日：2015-05-21
申请人： QUALCOMM Incorporated
发明人： Rajan Laxman Joshi , Vadim Seregin , Wei Pu , Marta Karczewicz , Joel Sole Rojals , Krishnakanth Rapaka
IPC分类号： H04N7/12 , H04N19/583 , H04N19/44 , H04N19/132 , H04N19/176 , H04N19/70 , H04N19/463 , H04N19/186 , H04N19/93
CPC分类号： H04N19/583 , H04N19/132 , H04N19/176 , H04N19/186 , H04N19/44 , H04N19/463 , H04N19/70 , H04N19/93
摘要： In an example, a method of processing video data includes determining a value of a block-level syntax element that indicates, for all samples of a block of video data, whether at least one respective sample of the block is coded based on a color value of the at least one respective sample not being included in a palette of colors for coding the block of video data. The method also includes coding the block of video data based on the value.

29. 发明授权

US10009632B2 Flicker detection and mitigation in video coding 有权
公开(公告)号：US10009632B2
公开(公告)日：2018-06-26
申请号：US14638965
申请日：2015-03-04
申请人： QUALCOMM Incorporated
发明人： Rajan Laxman Joshi , Xiang Li , Marta Karczewicz , Krishnakanth Rapaka
IPC分类号： H04N19/11 , H04N19/13 , H04N19/14 , H04N19/154 , H04N19/176 , H04N19/463 , H04N19/86 , H04N19/172 , H04N19/27
CPC分类号： H04N19/86 , H04N19/11 , H04N19/13 , H04N19/14 , H04N19/154 , H04N19/172 , H04N19/176 , H04N19/27 , H04N19/463
摘要： A device configured to code video data includes: a memory configured to store video data, and at least one processor. The at least one processor is configured to: code information indicating whether a block from a current picture will flicker. A determination of whether the block from the current picture will flicker is based on the block in the current picture in a display order and a collocated block from a next picture in the display order.

30. 发明授权

US09948916B2 Three-dimensional lookup table based color gamut scalability in multi-layer video coding 有权
公开(公告)号：US09948916B2
公开(公告)日：2018-04-17
申请号：US14512177
申请日：2014-10-10
申请人： QUALCOMM Incorporated
发明人： Xiang Li , Krishnakanth Rapaka , Jianle Chen , Marta Karczewicz
IPC分类号： H04N13/00 , H04N19/597 , H04N19/30 , H04N19/42
CPC分类号： H04N13/161 , H04N13/194 , H04N19/30 , H04N19/42 , H04N19/597
摘要： Techniques are described for 3D lookup table based color gamut scalability in multi-layer video coding. A lower layer of video data may include color data in a first color gamut and a higher layer of the video data may include color data in a second color gamut. To generate inter-layer reference pictures, a video coder performs color prediction to convert the color data of a reference picture in the first color gamut to the second color gamut. The video coder may perform color prediction using a 3D lookup table. According to the techniques, the video coder generates at least one 3D lookup table having a size that is different for a luma component than for a first chroma component and a second chroma component. In this way, the total size of the table may be reduced while maintaining good coding performance.

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