公开(公告)号：US20150304664A1

公开(公告)日：2015-10-22

申请号：US14688700

申请日：2015-04-16

Applicant: QUALCOMM Incorporated

Inventor： Xiang Li ,  Jianle Chen ,  Marta Karczewicz

IPC: H04N19/186 ,  H04N19/503 ,  H04N19/105

CPC classification number: H04N19/186 ,  H04N13/161 ,  H04N19/105 ,  H04N19/30 ,  H04N19/36 ,  H04N19/42 ,  H04N19/44 ,  H04N19/503 ,  H04N19/597

Abstract: Techniques are described for performing constrained three-dimensional (3D) color prediction for color gamut scalability in video coding. Color prediction techniques for color gamut scalability may be used by video coders to generate inter-layer reference pictures when a color gamut for a reference layer of video data is different than a color gamut for an enhancement layer of the video data, or when a bit depth of the reference layer is different than a bit depth of the enhancement layer. According to the techniques, a video coder may perform 3D color prediction with constrained bit depths of input and output color components of the 3D lookup table. According to further techniques, in the case of multiple layers, a video coder may perform 3D color prediction with constrained application to reference pictures in only one or more identified reference layers.

Abstract translation: 描述了用于对视频编码中的色域可伸缩性进行约束三维（3D）颜色预测的技术。 当用于视频数据的参考层的色域不同于用于视频数据的增强层的色域时，或者当位图像数据的增强层的色域不同时，视频编码器可以使用用于色域可伸缩性的颜色预测技术来产生层间参考图像 参考层的深度不同于增强层的位深度。 根据该技术，视频编码器可以利用3D查找表的输入和输出颜色分量的受限位深度来执行3D颜色预测。 根据其他技术，在多层的情况下，视频编码器可以执行具有约束应用的3D颜色预测，以仅在一个或多个所识别的参考层中参考图像。

公开(公告)号：US20150304628A1

公开(公告)日：2015-10-22

申请号：US14688648

申请日：2015-04-16

Applicant: QUALCOMM Incorporated

Inventor： Xiang Li ,  Jianle Chen ,  Marta Karczewicz

IPC: H04N13/00 ,  H04N19/186 ,  H04N19/503 ,  H04N19/597 ,  H04N19/44

CPC classification number: H04N19/186 ,  H04N13/161 ,  H04N19/105 ,  H04N19/30 ,  H04N19/36 ,  H04N19/42 ,  H04N19/44 ,  H04N19/503 ,  H04N19/597

Abstract: Techniques are described for performing constrained three-dimensional (3D) color prediction for color gamut scalability in video coding. Color prediction techniques for color gamut scalability may be used by video coders to generate inter-layer reference pictures when a color gamut for a reference layer of video data is different than a color gamut for an enhancement layer of the video data, or when a bit depth of the reference layer is different than a bit depth of the enhancement layer. According to the techniques, a video coder may perform 3D color prediction with constrained bit depths of input and output color components of the 3D lookup table. According to further techniques, in the case of multiple layers, a video coder may perform 3D color prediction with constrained application to reference pictures in only one or more identified reference layers.

Abstract translation: 描述了用于对视频编码中的色域可伸缩性进行约束三维（3D）颜色预测的技术。 当用于视频数据的参考层的色域不同于用于视频数据的增强层的色域时，或者当位图像数据的增强层的色域不同时，视频编码器可以使用用于色域可伸缩性的颜色预测技术来产生层间参考图像 参考层的深度不同于增强层的位深度。 根据该技术，视频编码器可以利用3D查找表的输入和输出颜色分量的受限位深度来执行3D颜色预测。 根据其他技术，在多层的情况下，视频编码器可以执行具有约束应用的3D颜色预测，以仅在一个或多个所识别的参考层中参考图像。

公开(公告)号：US20150195562A1

公开(公告)日：2015-07-09

申请号：US14592767

申请日：2015-01-08

Applicant: QUALCOMM Incorporated

Inventor： Xiang Li ,  Joel Sole Rojals ,  Marta Karczewicz ,  Hongbin Liu ,  Li Zhang ,  Jianle Chen

IPC: H04N19/523 ,  H04N19/176 ,  H04N19/139 ,  H04N19/513 ,  H04N19/105

CPC classification number: H04N19/523 ,  H04N19/105 ,  H04N19/109 ,  H04N19/139 ,  H04N19/176 ,  H04N19/44 ,  H04N19/51 ,  H04N19/53 ,  H04N19/533 ,  H04N19/56

Abstract: A device for decoding video data includes a memory configured to store video data and a video decoder comprising one or more processors configured to adaptively select motion vector precision for motion vectors used to encode blocks of video data.

Abstract translation: 用于解码视频数据的设备包括被配置为存储视频数据的存储器和包括一个或多个处理器的视频解码器，该处理器被配置为自适应地选择用于编码视频数据块的运动矢量的运动矢量精度。

公开(公告)号：US20150172670A1

公开(公告)日：2015-06-18

申请号：US14572002

申请日：2014-12-16

Applicant: QUALCOMM Incorporated

Inventor： Xiang Li ,  Jianle Chen ,  Marta Karczewicz

IPC: H04N19/136 ,  G06T7/40 ,  H04N19/50 ,  H04N19/124 ,  H04N19/44 ,  H04N19/137

CPC classification number: H04N19/136 ,  H04N19/105 ,  H04N19/124 ,  H04N19/186 ,  H04N19/30 ,  H04N19/42 ,  H04N19/70

Abstract: Techniques are described for signaling information used to generate three-dimensional (3D) color lookup tables for 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 encoder or video decoder performs color prediction using a 3D lookup table to convert the color data of a reference picture in the first color gamut to the second color gamut. According to the techniques, a video encoder may encode partition information and/or color values of a 3D lookup table generated for color gamut scalability. A video decoder may decode the partition information and/or color values to generate the 3D lookup table in order to perform color gamut scalability.

Abstract translation: 描述了用于在多层视频编码中产生用于色域可缩放性的三维（3D）颜色查找表的信令信息的技术。 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，视频编码器或视频解码器使用3D查找表执行颜色预测，以将第一色域中的参考图像的颜色数据转换为第二色域。 根据该技术，视频编码器可以编码针对色域可伸缩性生成的3D查找表的分区信息和/或颜色值。 视频解码器可以解码分区信息和/或颜色值以生成3D查找表，以便执行色域可伸缩性。

公开(公告)号：US20150103902A1

公开(公告)日：2015-04-16

申请号：US14512177

申请日：2014-10-10

Applicant: QUALCOMM Incorporated

Inventor： Xiang Li ,  Krishnakanth Rapaka ,  Jianle Chen ,  Marta Karczewicz

IPC: H04N13/00 ,  H04N19/597

CPC classification number: H04N13/161 ,  H04N13/194 ,  H04N19/30 ,  H04N19/42 ,  H04N19/597

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20140254679A1

公开(公告)日：2014-09-11

申请号：US14194159

申请日：2014-02-28

Applicant: QUALCOMM Incorporated

Inventor： Adarsh Krishnan Ramasubramonian ,  Ying Chen ,  Xiang Li ,  Ye-Kui Wang

IPC: H04N19/39 ,  H04N19/51 ,  H04N19/577

CPC classification number: H04N19/105 ,  H04N19/167 ,  H04N19/187 ,  H04N19/30 ,  H04N19/39 ,  H04N19/513 ,  H04N19/577 ,  H04N19/597

Abstract: A method of coding video data includes upsampling at least a portion of a reference layer picture to an upsampled picture having an upsampled picture size. The upsampled picture size has a horizontal upsampled picture size and a vertical upsampled picture size. At least one of the horizontal or vertical upsampled picture sizes may be different than a horizontal picture size or vertical picture size, respectively, of an enhancement layer picture. In addition, position information associated with the upsampled picture may be signaled. An inter-layer reference picture may be generated based on the upsampled picture and the position information.

Abstract translation: 编码视频数据的方法包括将参考层图像的至少一部分上采样为具有上采样图像大小的上采样图像。 上采样图像尺寸具有水平上采样图像尺寸和垂直上采样图像尺寸。 水平或垂直上采样图像尺寸中的至少一个可以分别与增强层图像的水平图像尺寸或垂直图像尺寸不同。 此外，可以发出与上采样图像相关联的位置信息。 可以基于上采样图像和位置信息来生成层间参考图像。

公开(公告)号：US20140254668A1

公开(公告)日：2014-09-11

申请号：US14196508

申请日：2014-03-04

Applicant: QUALCOMM Incorporated

Inventor： Krishnakanth Rapaka ,  Xiang Li ,  Jianle Chen ,  Ye-Kui Wang ,  Wei Pu

IPC: H04N19/503

CPC classification number: H04N19/17 ,  H04N19/33 ,  H04N19/436 ,  H04N19/50 ,  H04N19/503 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20140044179A1

公开(公告)日：2014-02-13

申请号：US13958262

申请日：2013-08-02

Applicant: QUALCOMM Incorporated

Inventor： Xiang Li ,  Jianle CHEN ,  Marta KARCZEWICZ

IPC: H04N7/36

CPC classification number: H04N19/51 ,  H04N19/30 ,  H04N19/46 ,  H04N19/52 ,  H04N19/573 ,  H04N19/577 ,  H04N19/597

Abstract: An apparatus for coding video information according to certain aspects includes a memory unit and a processor in communication with the memory unit. The memory unit stores video information of a reference layer and an enhancement layer. The processor determines a value of a current video unit of the enhancement layer based on, at least in part, explicit hypotheses and implicit hypotheses calculated from movement information from the reference layer.

Abstract translation: 根据某些方面的用于编码视频信息的装置包括存储器单元和与存储器单元通信的处理器。 存储单元存储参考层和增强层的视频信息。 至少部分地基于来自参考层的运动信息计算的显式假设和隐含假设，处理器确定增强层的当前视频单元的值。

公开(公告)号：US20240357131A1

公开(公告)日：2024-10-24

申请号：US18757156

申请日：2024-06-27

Applicant: QUALCOMM Incorporated

Inventor： Kai Zhang ,  Jianle Chen ,  Li Zhang ,  Xiang Li ,  Marta Karczewicz

IPC: H04N19/159 ,  H04N19/107 ,  H04N19/11 ,  H04N19/124 ,  H04N19/139 ,  H04N19/176 ,  H04N19/182 ,  H04N19/44 ,  H04N19/463 ,  H04N19/503 ,  H04N19/513 ,  H04N19/593 ,  H04N19/186

CPC classification number: H04N19/159 ,  H04N19/107 ,  H04N19/11 ,  H04N19/124 ,  H04N19/139 ,  H04N19/176 ,  H04N19/182 ,  H04N19/44 ,  H04N19/463 ,  H04N19/503 ,  H04N19/513 ,  H04N19/593 ,  H04N19/186

Abstract: Techniques are described for using an inter-intra-prediction block. A video coder may generate a first prediction block according to an intra-prediction mode and generate a second prediction block according to an inter-prediction mode. The video coder may weighted combine, such as based on the intra-prediction mode, the two prediction blocks to generate an inter-intra-prediction block (e.g., final prediction block). In some examples, an inter-intra candidate is identified in a list of candidate motion vector predictors, and an inter-intra-prediction block is used based on identification of the inter-intra candidate in the list of candidate motion vector predictors.

公开(公告)号：US11350109B2

公开(公告)日：2022-05-31

申请号：US16999741

申请日：2020-08-21

Applicant: QUALCOMM Incorporated

Inventor： Kai Zhang ,  Jianle Chen ,  Li Zhang ,  Xiang Li ,  Marta Karczewicz

IPC: H04N19/159 ,  H04N19/513 ,  H04N19/182 ,  H04N19/107 ,  H04N19/463 ,  H04N19/503 ,  H04N19/11 ,  H04N19/124 ,  H04N19/139 ,  H04N19/176 ,  H04N19/44 ,  H04N19/593 ,  H04N19/186

Abstract: Techniques are described for using an inter-intra-prediction block. A video coder may generate a first prediction block according to an intra-prediction mode and generate a second prediction block according to an inter-prediction mode. The video coder may weighted combine, such as based on the intra-prediction mode, the two prediction blocks to generate an inter-intra-prediction block (e.g., final prediction block). In some examples, an inter-intra candidate is identified in a list of candidate motion vector predictors, and an inter-intra-prediction block is used based on identification of the inter-intra candidate in the list of candidate motion vector predictors.