公开(公告)号：US20180199048A1

公开(公告)日：2018-07-12

申请号：US15864901

申请日：2018-01-08

Applicant: QUALCOMM Incorporated

Inventor： Amir Said ,  Cheng-Teh Hsieh ,  Marta Karczewicz

IPC: H04N19/44 ,  H04N19/50 ,  H04N19/70

CPC classification number: H04N19/44 ,  H04N19/13 ,  H04N19/42 ,  H04N19/50 ,  H04N19/70

Abstract: A method of decoding video data including receiving video data including coded representations of syntax elements performing inverse binary arithmetic coding on the coded representations of the syntax elements to obtain bins of the syntax elements, inverse binarizing the bins of the syntax elements to obtain the syntax elements, and decoding the video data based on the syntax elements. Performing the inverse binary arithmetic coding includes determining a probability for a particular coded representation of the coded representations, normalizing the probability for the particular coded representation using right bit shifts to create a normalized probability, determining a product of the normalized probability and a range for the particular coded representation, and updating a range of a least probable symbol for the particular coded representation using the determined product.

公开(公告)号：US09955186B2

公开(公告)日：2018-04-24

申请号：US14992820

申请日：2016-01-11

Applicant: QUALCOMM Incorporated

Inventor： Jaehong Chon ,  In Suk Chong ,  Xianglin Wang ,  Cheng-Teh Hsieh

IPC: H04N7/12 ,  G06K9/36 ,  H04N19/593 ,  H04N19/119 ,  H04N19/147 ,  H04N19/11 ,  H04N19/14

CPC classification number: H04N19/593 ,  H04N19/11 ,  H04N19/119 ,  H04N19/14 ,  H04N19/147

Abstract: An example method includes determining a respective variance value for pixels of each respective sub-block of at least four sub-blocks of a current block of video data of a particular block size; determining an average of the determined variance values for the at least four sub-blocks; determining a maximum difference value for the current block based on the average and the variance values for the at least four sub-blocks; determining whether pixels of the current block are homogeneous based on whether the maximum difference value for the current block satisfies a threshold difference value; and in response to determining that the pixels of the current block are homogeneous, selectively including block sizes that are greater than or equal to a threshold block size in a sub-set of block sizes to evaluate for use when intra encoding the pixels of the current block.

公开(公告)号：US20180084281A1

公开(公告)日：2018-03-22

申请号：US15270914

申请日：2016-09-20

Applicant: QUALCOMM Incorporated

Inventor： Cheng-Teh Hsieh ,  In Suk Chong ,  Xianglin Wang

IPC: H04N19/70 ,  H04N19/52 ,  H04N19/93

CPC classification number: H04N19/93 ,  H04N19/13 ,  H04N19/146 ,  H04N19/184

Abstract: In one example, a device for accessing image data includes a memory configured to store image data, the memory comprising a first region and a second region; and one or more processing units configured to code most significant bits (MSBs) of a plurality of residuals of samples of a block of an image, each of the residuals representing a respective difference value between a respective raw sample value and a respective predicted value for the respective raw sample value, access the coded MSBs in the first region of the memory, and access least significant bits (LSBs) of the plurality of residuals of the samples in the second region of the memory.

公开(公告)号：US20170201769A1

公开(公告)日：2017-07-13

申请号：US14992820

申请日：2016-01-11

Applicant: QUALCOMM Incorporated

Inventor： Jaehong Chon ,  In Suk Chong ,  Xianglin Wang ,  Cheng-Teh Hsieh

IPC: H04N19/593

CPC classification number: H04N19/593 ,  H04N19/11 ,  H04N19/119 ,  H04N19/14 ,  H04N19/147

Abstract: An example method includes determining a respective variance value for pixels of each respective sub-block of at least four sub-blocks of a current block of video data of a particular block size; determining an average of the determined variance values for the at least four sub-blocks; determining a maximum difference value for the current block based on the average and the variance values for the at least four sub-blocks; determining whether pixels of the current block are homogeneous based on whether the maximum difference value for the current block satisfies a threshold difference value; and in response to determining that the pixels of the current block are homogeneous, selectively including block sizes that are greater than or equal to a threshold block size in a sub-set of block sizes to evaluate for use when intra encoding the pixels of the current block.

公开(公告)号：US20160353117A1

公开(公告)日：2016-12-01

申请号：US15158741

申请日：2016-05-19

Applicant: QUALCOMM Incorporated

Inventor： Vadim Seregin ,  Krishnakanth Rapaka ,  Cheng-Teh Hsieh ,  Rajan Laxman Joshi ,  Ye-Kui Wang ,  Chao Pang ,  Marta Karczewicz

IPC: H04N19/174 ,  H04N19/139 ,  H04N19/513 ,  H04N19/105

CPC classification number: H04N19/174 ,  H04N19/103 ,  H04N19/105 ,  H04N19/139 ,  H04N19/521 ,  H04N19/593 ,  H04N19/70

Abstract: A device for decoding video data includes a memory configured to store the video data and one or more processors configured to receive a slice of the video data, parse an intra block copy (IBC) syntax element to determine that an IBC mode is enabled for the slice, parse a slice type syntax element associated with the slice to determine the slice is an I slice, and decode the slice as an I slice by decoding all blocks of the slice using intra prediction coding modes.

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被配置为接收视频数据片段的一个或多个处理器，解析帧内块复制（IBC）语法元素，以确定为IBC模式启用IBC模式 切片，解析与切片相关联的切片类型语法元素以确定切片是I切片，并且通过使用帧内预测编码模式对切片的所有块进行解码来将切片解码为I切片。

公开(公告)号：US09237359B2

公开(公告)日：2016-01-12

申请号：US14036907

申请日：2013-09-25

Applicant: QUALCOMM Incorporated

Inventor： Ling Feng Huang ,  Ravikanth Challagulla ,  Cheng-Teh Hsieh ,  Eric Michael Lutz ,  Rohan Prakash Mallya ,  Sumit Mohan

IPC: G06K9/40 ,  H04N19/80 ,  H04N19/70 ,  H04N19/86

CPC classification number: H04N19/80 ,  H04N19/70 ,  H04N19/865

Abstract: In an example, a method for filtering pixel data in video coding comprises determining a pixel filtering task from a plurality of pixel filtering tasks for filtering the pixel data, wherein each filtering task of the plurality of pixel filtering tasks is based on an instruction set for a programmable instruction set based controller, and executing the determined filtering task on the pixel data.

Abstract translation: 在一个示例中，用于对视频编码中的像素数据进行滤波的方法包括从多个像素滤波任务中确定像素滤波任务，以对像素数据进行滤波，其中，多个像素滤波任务中的每个滤波任务基于 基于可编程指令集的控制器，并对所述像素数据执行所确定的滤波任务。

公开(公告)号：US20150085916A1

公开(公告)日：2015-03-26

申请号：US14036907

申请日：2013-09-25

Applicant: QUALCOMM Incorporated

Inventor： Ling Feng Huang ,  Ravikanth Challagulla ,  Cheng-Teh Hsieh ,  Eric Michael Lutz ,  Rohan Prakash Mallya ,  Sumit Mohan

IPC: H04N19/117

CPC classification number: H04N19/80 ,  H04N19/70 ,  H04N19/865

Abstract: In an example, a method for filtering pixel data in video coding comprises determining a pixel filtering task from a plurality of pixel filtering tasks for filtering the pixel data, wherein each filtering task of the plurality of pixel filtering tasks is based on an instruction set for a programmable instruction set based controller, and executing the determined filtering task on the pixel data.

Abstract translation: 在一个示例中，用于对视频编码中的像素数据进行滤波的方法包括从多个像素滤波任务中确定像素滤波任务，以对像素数据进行滤波，其中，多个像素滤波任务中的每个滤波任务基于 基于可编程指令集的控制器，并对所述像素数据执行所确定的滤波任务。