公开(公告)号：US20180270500A1

公开(公告)日：2018-09-20

申请号：US15918789

申请日：2018-03-12

Applicant: QUALCOMM Incorporated

Inventor： Xiang LI ,  Yi-Wen CHEN ,  Jianle CHEN ,  Hsiao-Chiang CHUANG ,  Wei-Jung CHIEN ,  Yu-Chen SUN ,  Marta KARCZEWICZ

IPC: H04N19/52 ,  H04N19/176 ,  H04N19/44

Abstract: Techniques and systems are provided for deriving one or more sets of affine motion parameters at a decoder. For example, the decoder can obtain video data from an encoded video bitstream. The video data includes at least a current picture and a reference picture. The decoder can determine a set of affine motion parameters for a current block of the current picture. The set of affine motion parameters can be used for performing motion compensation prediction for the current block. The set of affine motion parameters can be determined using a current affine template of the current block and a reference affine template of the reference picture. In some cases, an encoder can determine a set of affine motion parameters for a current block using a current affine template of the current block and a reference affine template of the reference picture, and can generate an encoded video bitstream that includes a syntax item indicating template matching based affine motion derivation mode is to be used by a decoder for the current block. The encoded video bitstream may not include any affine motion parameters for determining the set of affine motion parameters.

公开(公告)号：US20180268517A1

公开(公告)日：2018-09-20

申请号：US15925681

申请日：2018-03-19

Applicant: QUALCOMM Incorporated

Inventor： Muhammed COBAN ,  Geert VAN DER AUWERA ,  Marta KARCZEWICZ

IPC: G06T3/00 ,  G06F17/17 ,  H04N19/172 ,  H04N19/174

CPC classification number: G06T3/0087 ,  G06F17/17 ,  G06T3/0093 ,  G06T15/205 ,  G06T17/00 ,  G06T2207/10016 ,  H04N19/172 ,  H04N19/174 ,  H04N19/597 ,  H04N19/85

Abstract: Methods and systems for processing video data are provided. For example, a video bitstream can be obtained that includes a video frame of a spherical representation of 360-degree video data. The video frame can include a planar surface of a geometry, and the planar surface can include a plurality of pixels. Three-dimensional coordinates of a target point of the spherical representation can be determined. A planar surface of the geometry to which the target point is to be mapped can also be determined. The planar surface can be determined based on the three-dimensional coordinates of the target point. Two-dimensional coordinates of a mapping location on the planar surface to which the target point is to be mapped can be determined based on the three-dimensional coordinates of the target point and an adaptation parameter. A pixel value can then be generated based on one or more pixels associated with the mapping location. The pixel value can be assigned to the target point.

公开(公告)号：US20180268516A1

公开(公告)日：2018-09-20

申请号：US15925674

申请日：2018-03-19

Applicant: QUALCOMM Incorporated

Inventor： Muhammed COBAN ,  Geert VAN DER AUWERA ,  Marta KARCZEWICZ

IPC: G06T3/00 ,  G06F17/17 ,  H04N19/172 ,  H04N19/174

CPC classification number: G06T3/0087 ,  G06F17/17 ,  G06T3/0093 ,  G06T15/205 ,  G06T17/00 ,  G06T2207/10016 ,  H04N19/172 ,  H04N19/174 ,  H04N19/597 ,  H04N19/85

Abstract: Methods and systems for processing video data are provided. In one example, a first video bitstream can be obtained, which can include video frames of a spherical representation of 360-degree video data. Two-dimensional pixel coordinates of a pixel location of a planar surface of a geometry can be determined. The planar surface can be part of a plurality of planar surfaces of the geometry. Two-dimensional normalized coordinates can be determined for the pixel location based on an adaptation parameter and the two-dimensional pixel coordinates. Three-dimensional coordinates of a sample point of the spherical representation of the 360-degree video data can be determined based on the two-dimensional normalized coordinates. A pixel value for the pixel location of the planar surface of the geometry can be determined based on the sample point, and a second video bitstream can be generated that includes pixel values determined for pixel locations of the plurality of planar surfaces of the geometry.

公开(公告)号：US20180098066A1

公开(公告)日：2018-04-05

申请号：US15724155

申请日：2017-10-03

Applicant: QUALCOMM Incorporated

Inventor： Sungwon LEE ,  Wei-Jung CHIEN ,  Kai ZHANG ,  Jianle CHEN ,  Marta KARCZEWICZ

IPC: H04N19/117 ,  H04N19/139 ,  H04N19/82 ,  H04N19/184 ,  H04N19/159 ,  H04N19/513 ,  H04N19/59

CPC classification number: H04N19/117 ,  H04N19/136 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184 ,  H04N19/46 ,  H04N19/463 ,  H04N19/521 ,  H04N19/523 ,  H04N19/59 ,  H04N19/82

Abstract: Systems, methods, and apparatus are provided for adaptively switching interpolation filters during the encoding of video data or the decoding of a video bitstream. In various implementations, a set of interpolation filters can be defined and made available to coding device. The coding device can select an interpolation filter for a given coding unit. The interpolation filter can be selected based on, for example, the coding level of the coding unit, among other things. In some examples, signaling of the selected interpolation filter can be simplified by selecting a subset of the set of interpolation filters for a given coding situation. An index indicating an interpolation filter from the subset can then be signaled. Alternatively, a decoder can derive an identity of the interpolation filter from data provided by a bitstream, in which case the index need not be explicitly signaled in the bitstream.

公开(公告)号：US20170339418A1

公开(公告)日：2017-11-23

申请号：US15594207

申请日：2017-05-12

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/176 ,  H04N19/136 ,  H04N19/186 ,  H04N19/70

CPC classification number: H04N19/176 ,  H04N19/136 ,  H04N19/186 ,  H04N19/70

Abstract: Systems, methods, and computer readable media are described for processing content color volume messages. In some examples, video data is obtained. The video data can include video data obtained from a camera, encoded video data, or decoded video data. Content color volume information associated with the video data is processed. The content color volume information is indicative of the content color volume of one or more pictures of the video data. For example, the content color volume information includes a first luminance value associated with a minimum luminance of the one or more pictures, a second luminance value associated with a maximum luminance of the one or more pictures, and one or more chromaticity coordinates of one or more color primaries describing a color gamut of the one or more pictures.

公开(公告)号：US20160381373A1

公开(公告)日：2016-12-29

申请号：US15187694

申请日：2016-06-20

Applicant: QUALCOMM Incorporated

Inventor： Vadim Seregin ,  Krishnakanth RAPAKA ,  Ye-Kui WANG ,  Marta KARCZEWICZ

IPC: H04N19/503 ,  H04N19/593

CPC classification number: H04N19/503 ,  H04N19/573 ,  H04N19/593 ,  H04N19/70

Abstract: An apparatus configured to construct a reference picture list includes a memory and one or more processors in communication with the memory. The memory is configured to store one or more reference pictures. The one or more processors are configured to determine (i) a first number representative of a total number of reference pictures available for prediction in at least one of inter mode or intra block copy mode and (ii) a second number representative of a total number of reference pictures to be included in the reference picture list, and in response to a determination that the second number is greater than or equal to the first number, refrain from replacing a reference picture in the reference picture list with a current picture to be predicted. The one or more processors may encode or decode the current picture based on the reference picture list.

Abstract translation: 被配置为构造参考图片列表的装置包括存储器和与存储器通信的一个或多个处理器。 存储器被配置为存储一个或多个参考图片。 所述一个或多个处理器被配置为确定（i）代表在帧间模式或块内复制模式中的至少一个中可用于预测的参考图片的总数的第一数字，以及（ii）总数的第二数字代表 的参考图像被包括在参考图像列表中，并且响应于第二个数量大于或等于第一个数字的确定，不用当前要预测的图像替换参考图像列表中的参考图像 。 一个或多个处理器可以基于参考图片列表对当前图片进行编码或解码。

公开(公告)号：US20140301457A1

公开(公告)日：2014-10-09

申请号：US14243310

申请日：2014-04-02

Applicant: QUALCOMM Incorporated

Inventor： Wei Pu ,  Jianle CHEN ,  Xiang LI ,  Marta KARCZEWICZ ,  Vadim SEREGIN

IPC: H04N19/503 ,  H04N19/80 ,  H04N19/31

CPC classification number: H04N19/80 ,  H04N19/30 ,  H04N19/46

Abstract: A method of coding video data can include receiving video information associated with a reference layer, an enhancement layer, or both, and generating a plurality of inter-layer reference pictures using a plurality of inter-layer filters and one or more reference layer pictures. The generated plurality of inter-layer reference pictures may be inserted into a reference picture list. A current picture in the enhancement layer may be coded using the reference picture list. The inter-layer filters may comprise default inter-layer filters or alternative inter-layer filters signaled in a sequence parameter set, video parameter set, or slice header.

Abstract translation: 编码视频数据的方法可以包括接收与参考层，增强层或两者相关联的视频信息，以及使用多个层间滤波器和一个或多个参考层图像来生成多个层间参考图像。 所生成的多个层间参考图片可以被插入到参考图片列表中。 可以使用参考图片列表对增强层中的当前图像进行编码。 层间过滤器可以包括在序列参数集，视频参数集或片头中发信号的默认层间过滤器或替代层间过滤器。

公开(公告)号：US20140185680A1

公开(公告)日：2014-07-03

申请号：US14137101

申请日：2013-12-20

Applicant: QUALCOMM Incorporated

Inventor： Xiang LI ,  Jianle CHEN ,  Marta KARCZEWICZ ,  Vadim SEREGIN ,  Wei PU ,  Krishnakanth RAPAKA ,  Liwei GUO

IPC: H04N19/187 ,  H04N19/597 ,  H04N19/154 ,  H04N19/593 ,  H04N19/51 ,  H04N19/59

CPC classification number: H04N19/187 ,  H04N19/154 ,  H04N19/52 ,  H04N19/59 ,  H04N19/593 ,  H04N19/597

Abstract: An apparatus configured to code (e.g., encode or decode) video information includes a memory unit and a processor in communication with the memory unit. The memory unit is configured to store video information associated with a base layer and an enhancement layer. The processor is configured to up-sample a base layer reference block by using an up-sampling filter when the base and enhancement layers have different resolutions; perform motion compensation interpolation by filtering the up-sampled base layer reference block; determine base layer residual information based on the filtered up-sampled base layer reference block; determine weighted base layer residual information by applying a weighting factor to the base layer residual information; and determine an enhancement layer block based on the weighted base layer residual information. The processor may encode or decode the video information.

Abstract translation: 被配置为对视频信息进行编码（例如，编码或解码）的装置包括与存储器单元通信的存储器单元和处理器。 存储器单元被配置为存储与基本层和增强层相关联的视频信息。 处理器被配置为当基层和增强层具有不同分辨率时，通过使用上采样滤波器对基层参考块进行采样; 通过对上采样的基层参考块进行滤波来执行运动补偿内插; 基于滤波的上采样基层参考块确定基层残差信息; 通过对所述基本层残差信息应用加权因子来确定加权基本层残差信息; 并且基于加权的基本层残差信息来确定增强层块。 处理器可以对视频信息进行编码或解码。

公开(公告)号：US20140092967A1

公开(公告)日：2014-04-03

申请号：US14035674

申请日：2013-09-24

Applicant: QUALCOMM Incorporated

Inventor： Vadim SEREGIN ,  Xianglin WANG ,  Chengjie TU ,  Ying CHEN ,  Marta KARCZEWICZ

IPC: H04N7/26

CPC classification number: H04N19/105 ,  H04N19/30 ,  H04N19/52

Abstract: Systems, methods, and devices for coding video data are described herein. In some aspects, a memory is configured to store the video data associated with a base layer and an enhancement layer. The base layer may comprise a reference block and base layer motion information associated with the reference block. The enhancement layer may comprise a current block. A processor operationally coupled to the memory is configured to determine a position of the base layer motion information in a candidate list based on a prediction mode in a plurality of prediction modes used at the enhancement layer. The processor is further configured to perform a prediction of the current block based at least in part on the candidate list.

Abstract translation: 本文描述了用于编码视频数据的系统，方法和设备。 在一些方面，存储器被配置为存储与基本层和增强层相关联的视频数据。 基本层可以包括与参考块相关联的参考块和基本层运动信息。 增强层可以包括当前块。 可操作地耦合到存储器的处理器被配置为基于在增强层处使用的多种预测模式中的预测模式来确定候选列表中的基本层运动信息的位置。 处理器还被配置为至少部分地基于候选列表来执行当前块的预测。

公开(公告)号：US20140064360A1

公开(公告)日：2014-03-06

申请号：US14011441

申请日：2013-08-27

Applicant: QUALCOMM INCORPORATED

Inventor： Krishnakanth RAPAKA ,  Jianle CHEN ,  Marta KARCZEWICZ ,  Vadim SEREGIN

IPC: H04N7/26

CPC classification number: H04N19/30 ,  H04N19/103 ,  H04N19/105 ,  H04N19/11 ,  H04N19/117 ,  H04N19/129 ,  H04N19/136 ,  H04N19/176 ,  H04N19/18 ,  H04N19/187 ,  H04N19/33 ,  H04N19/46 ,  H04N19/59 ,  H04N19/593

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 associated with a reference layer and a corresponding enhancement layer. The processor determines a value of a video unit positioned at a position within the enhancement layer based at least in part on an intra prediction value weighted by a first weighting factor, wherein the intra prediction value is determined based on at least one additional video unit in the enhancement layer, and a value of a co-located video unit in the reference layer weighted by a second weighting factor, wherein the co-located video unit is located at a position in the reference layer corresponding to the position of the video unit in the enhancement layer. In some embodiments, the at least one of the first and second weighting factors is between 0 and 1.

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。 存储单元存储与参考层和对应的增强层相关联的视频信息。 处理器至少部分地基于由第一加权因子加权的帧内预测值来确定位于增强层内的位置处的视频单元的值，其中帧内预测值基于至少一个附加视频单元 所述增强层和由第二加权因子加权的参考层中的同位置视频单元的值，其中所述同位置视频单元位于与所述视频单元的位置对应的参考层中的位置 增强层。 在一些实施例中，第一和第二加权因子中的至少一个在0和1之间。