公开(公告)号：US20180152703A1

公开(公告)日：2018-05-31

申请号：US15826565

申请日：2017-11-29

Applicant: QUALCOMM Incorporated

Inventor： Dmytro RUSANOVSKYY ,  Adarsh Krishnan RAMASUBRAMONIAN ,  Joel SOLE ROJALS

IPC: H04N19/12 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/136

CPC classification number: H04N19/50 ,  H04N1/64 ,  H04N19/12 ,  H04N19/136 ,  H04N19/17 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/39 ,  H04N19/46 ,  H04N19/52 ,  H04N19/70 ,  H04N21/4316

Abstract: Provided are methods, apparatus, and computer-readable medium for processing video data using a video coding system that implements ST 2094-10 for modifying the color volume of a video signal. In various implementations, metadata blocks that include color volume transform parameters can be included in an encoded bitstream with an encoded video. Mastering display color volume parameters must also be included in the encoded bitstream when the color volume transform parameters are included in the bitstream. When the mastering display color volume parameters are not also included in the bitstream, all or part of the bitstream is non-conforming.

公开(公告)号：US20170105014A1

公开(公告)日：2017-04-13

申请号：US15287494

申请日：2016-10-06

Applicant: QUALCOMM Incorporated

Inventor： Sungwon LEE ,  Adarsh Krishnan RAMASUBRAMONIAN ,  Dmytro RUSANOVSKYY ,  Joel SOLE ROJALS ,  Done BUGDAYCI SANSLI ,  Marta KARCZEWICZ

IPC: H04N19/30

CPC classification number: H04N19/30 ,  H04N19/182 ,  H04N19/184 ,  H04N19/186 ,  H04N19/85

Abstract: The present disclosure provides various aspects related to luma-driven chroma scaling for high dynamic range and wide color gamut contents. For example, a method of video data decoding may include obtaining video data, where the video data includes a scaled chroma component and a luma component, and where the scaled chroma component is scaled based on a chroma scaling factor that is a non-linear function of the luma component. The method may also include obtaining the chroma scaling factor for the scaled chroma component and generating a chroma component from the scaled chroma component based on the chroma scaling factor. In addition, the method may include outputting the chroma component, which may then be used for further processing.

公开(公告)号：US20140003530A1

公开(公告)日：2014-01-02

申请号：US13929556

申请日：2013-06-27

Applicant: Qualcomm Incorporated

Inventor： Joel SOLE ROJALS ,  Marta KARCZEWICZ

IPC: H04N7/30

CPC classification number: H04N19/48 ,  H04N19/129 ,  H04N19/18 ,  H04N19/467 ,  H04N19/61

Abstract: A video coder, when coding residual data, determines whether to perform SDH for a coefficient group of a chroma transform block independently from determining whether to perform SDH for the coefficient group of the luma transform block.

Abstract translation: 视频编码器在编码残差数据时，独立于确定是否对亮度变换块的系数组执行SDH，确定是否对色度变换块的系数组执行SDH。

公开(公告)号：US20130272423A1

公开(公告)日：2013-10-17

申请号：US13862818

申请日：2013-04-15

Applicant: QUALCOMM INCORPORATED

Inventor： Wei-Jung CHIEN ,  Joel SOLE ROJALS ,  Jianle CHEN ,  Rajan Laxman JOSHI ,  Marta KARCZEWICZ

IPC: H04N7/30

CPC classification number: H04N19/60 ,  H03M7/40 ,  H03M7/4018 ,  H04N19/102 ,  H04N19/129 ,  H04N19/13 ,  H04N19/167 ,  H04N19/176 ,  H04N19/18

Abstract: Techniques are described for determining a scan order for transform coefficients of a block. The techniques may determine context for encoding or decoding significance syntax elements for the transform coefficients based on the determined scan order. A video encoder may encode the significance syntax elements and a video decoder may decode the significance syntax elements based on the determined contexts.

Abstract translation: 描述了用于确定块的变换系数的扫描顺序的技术。 这些技术可以基于所确定的扫描顺序来确定用于对变换系数的重要性语法元素进行编码或解码的上下文。 视频编码器可以对重要性语法元素进行编码，并且视频解码器可以基于所确定的上下文来解码重要语法元素。

公开(公告)号：US20130272378A1

公开(公告)日：2013-10-17

申请号：US13832909

申请日：2013-03-15

Applicant: QUALCOMM INCORPORATED

Inventor： Joel SOLE ROJALS ,  Rajan Laxman JOSHI ,  Marta KARCZEWICZ

IPC: H04N7/12

CPC classification number: H04N19/60 ,  H03M7/40 ,  H03M7/4018 ,  H04N19/102 ,  H04N19/129 ,  H04N19/13 ,  H04N19/167 ,  H04N19/176 ,  H04N19/18

Abstract: Techniques are described for a video coder (e.g., video encoder or video decoder) that is configured to select a context pattern from a plurality of context patterns that are the same for a plurality of scan types. Techniques are also described for a video coder that is configured to select a context pattern that is stored as a one-dimensional context pattern and identifies contexts for two or more scan types.

Abstract translation: 描述了用于视频编码器（例如，视频编码器或视频解码器）的技术，其被配置为从多个扫描类型相同的多个上下文模式中选择上下文模式。 还描述了用于视频编码器的技术，其被配置为选择作为一维上下文模式存储的上下文模式并且识别两种或更多种扫描类型的上下文。