公开(公告)号：WO2017142875A1

公开(公告)日：2017-08-24

申请号：PCT/US2017/017827

申请日：2017-02-14

Applicant: QUALCOMM INCORPORATED

Inventor： CHIEN, Wei-Jung ,  LEE, Sungwon ,  ZHANG, Li ,  KARCZEWICZ, Marta

IPC: H04N19/52 ,  H04N19/139 ,  H04N19/176 ,  H04N19/196

CPC classification number: H04N19/513 ,  H04N19/139 ,  H04N19/172 ,  H04N19/176 ,  H04N19/196 ,  H04N19/52 ,  H04N19/573 ,  H04N19/70 ,  H04N19/94

Abstract: In general, this disclosure described techniques for pruning a list of motion vector prediction candidates based on picture order count (POC) values. A video coding device may be configured to generate the list of motion vector prediction candidates for a prediction unit (PU) of video data. The video coding device may prune a first motion vector prediction candidate from the list of motion vector prediction candidates when a POC value for a reference picture identified by the first motion vector prediction candidate is equal to a second POC value of a reference picture identified by a second motion vector prediction candidate in the list of motion vector prediction candidates. The video coding device may code the PU using the pruned list.

Abstract translation: 一般而言，本发明描述用于基于图片次序计数（POC）值修剪运动向量预测候选者的列表的技术。 视频译码装置可经配置以产​​生视频数据的预测单元（PU）的运动向量预测候选者的列表。 当由第一运动向量预测候选所识别的参考图片的POC值等于由第一运动向量预测候选所识别的参考图片的第二POC值时，视频译码装置可从运动向量预测候选者的列表中剪除第一运动向量预测候选者 运动矢量预测候选列表中的第二运动矢量预测候选。 视频编码设备可以使用剪除的列表来编码PU。

公开(公告)号：WO2017044740A2

公开(公告)日：2017-03-16

申请号：PCT/US2016/050941

申请日：2016-09-09

Applicant: QUALCOMM INCORPORATED

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

IPC: H04N19/70

CPC classification number: H04N19/124 ,  H04N19/186 ,  H04N19/70

Abstract: In an example, a method of processing video may include receiving a bitstream including encoded video data and a colour remapping information (CRI) supplemental enhancement information (SEI) message. The CRI SEI message may include information corresponding to one or more colour remapping processes. The method may include decoding the encoded video data to generate decoded video data. The method may include applying a process that does not correspond to the CRI SEI message to the decoded video data before applying at least one of the one or more colour remapping processes to the decoded video data to produce processed decoded video data.

Abstract translation: 在一个示例中，处理视频的方法可以包括接收包括编码视频数据和颜色重映射信息（CRI）补充增强信息（SEI）消息的比特流。 CRI SEI消息可以包括对应于一个或多个颜色重映射处理的信息。 该方法可以包括解码编码的视频数据以产生解码的视频数据。 该方法可以包括在将一个或多个颜色重映射处理中的至少一个应用于解码的视频数据之前，将与CRI SEI消息不对应的处理应用于解码的视频数据，以产生经处理的解码的视频数据。

公开(公告)号：WO2016073168A1

公开(公告)日：2016-05-12

申请号：PCT/US2015/056035

申请日：2015-10-16

Applicant: QUALCOMM INCORPORATED

Inventor： CHONG, In Suk ,  LEE, Sungwon ,  HSIEH, Cheng-Teh ,  KARCZEWICZ, Marta

IPC: H04N19/176 ,  H04N19/103 ,  H04N19/137

CPC classification number: H04N19/176 ,  H04N19/103 ,  H04N19/105 ,  H04N19/122 ,  H04N19/137 ,  H04N19/139

Abstract: Provided are techniques for low complexity video coding. For example, a video coder may be configured to calculate a first sum of absolute difference (SAD) value between a CU block and a corresponding block in a reference frame for the largest coding unit (LCU). The video coder may define conditions (e.g., background and/or homogeneous conditions) for the branching based at least in part on the first SAD value. The video coder may also determine the branching based on detecting the background or homogeneous condition, the branching including a first branch corresponding to both a first CU size of the CU block and a second CU size of a sub-block of the CU block. The video coder may then set the first branch to correspond to the first CU size, if the first CU size or the second CU size satisfies the background condition.

Abstract translation: 提供了用于低复杂度视频编码的技术。 例如，视频编码器可以被配置为计算CU块和用于最大编码单元（LCU）的参考帧中的相应块之间的绝对差（SAD）值的第一和。 视频编码器可以至少部分地基于第一SAD值来定义用于分支的条件（例如，背景和/或均匀条件）。 视频编码器还可以基于检测背景或均匀条件来确定分支，该分支包括对应于CU块的第一CU大小和CU块的子块的第二CU大小两者的第一分支。 如果第一CU尺寸或第二CU尺寸满足背景条件，则视频编码器然后可以将第一分支设置为对应于第一CU尺寸。

公开(公告)号：WO2015142618A1

公开(公告)日：2015-09-24

申请号：PCT/US2015/020197

申请日：2015-03-12

Applicant: QUALCOMM INCORPORATED

Inventor： CHONG, In Suk ,  LEE, Sungwon ,  WANG, Xianglin ,  KARCZEWICZ, Marta

IPC: H04N19/176 ,  H04N19/103 ,  H04N19/23 ,  H04N19/557 ,  H04N19/137

CPC classification number: H04N19/23 ,  H04N19/103 ,  H04N19/137 ,  H04N19/174 ,  H04N19/176 ,  H04N19/557

Abstract: Systems and methods for low complexity encoding and background detection are described herein. One aspect of the subject matter described in the disclosure provides a video encoder comprising a memory configured to store a video block. The video encoder further comprises a processor in communication with the memory. The processor is configured to determine whether the video block is background by comparing the video block to a corresponding block located in a previous temporal frame. The processor is further configured to determine, when the video block is not background, whether one or more sub-blocks of the video block are background by comparing the sub-blocks to corresponding sub-blocks located in the previous temporal frame.

Abstract translation: 本文描述了用于低复杂度编码和背景检测的系统和方法。 在本公开中描述的主题的一个方面提供了一种视频编码器，其包括被配置为存储视频块的存储器。 视频编码器还包括与存储器通信的处理器。 处理器被配置为通过将视频块与位于先前时间帧中的对应块进行比较来确定视频块是否是背景。 处理器还被配置为通过将子块与位于先前时间帧中的对应子块进行比较来确定何时视频块不是背景，视频块的一个或多个子块是否是背景。

公开(公告)号：WO2021178245A1

公开(公告)日：2021-09-10

申请号：PCT/US2021/020013

申请日：2021-02-26

Applicant: QUALCOMM INCORPORATED

Inventor： JAYAKUMAR, Hrishikesh ,  REGINI, Edoardo ,  LEE, Sungwon ,  CHUNG, Hyukjune

IPC: H04N5/232 ,  H04N5/77

Abstract: Systems, methods, and non-transitory media are provided for power-efficient image stabilization. An example method can include collecting measurements from a motion sensor, the measurements being based on movement of an image sensor while capturing frames; calculating parameters for counteracting motions in a frame, wherein first parameters are based on the measurements and second parameters are based on some of the measurements; adjusting, in a first stabilization pass of a dual-pass stabilization process, the first frame according to the second parameters; adjusting, in a second stabilization pass of the dual-pass stabilization process, the first frame according to the first parameters; based on a second frame having less motion than the first frame, enabling for the second frame a single-pass stabilization process for both a frame preview process and video record process; and adjusting, in the single stabilization pass, the second frame according to parameters for counteracting motions in the second frame.

公开(公告)号：WO2018067848A1

公开(公告)日：2018-04-12

申请号：PCT/US2017/055390

申请日：2017-10-05

Applicant: QUALCOMM INCORPORATED

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

IPC: H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/117 ,  H04N19/136 ,  H04N19/82 ,  H04N19/523 ,  H04N19/59

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.

Abstract translation: 系统，方法和设备被提供用于在视频数据的编码或视频比特流的解码期间自适应地切换内插滤波器。 在各种实现中，可以定义一组内插滤波器并使其可用于编码设备。 编码设备可以为给定的编码单元选择内插滤波器。 插值滤波器可以基于例如编码单元的编码级别等来选择。 在一些示例中，可以通过针对给定编码情况选择该组内插滤波器的子集来简化所选内插滤波器的信令。 然后可以发信号通知指示来自该子集的内插滤波器的索引。 或者，解码器可以从比特流提供的数据中导出内插滤波器的标识，在这种情况下，索引不需要在比特流中明确地发信号。

公开(公告)号：WO2017066580A1

公开(公告)日：2017-04-20

申请号：PCT/US2016/057057

申请日：2016-10-14

Applicant: QUALCOMM INCORPORATED

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

IPC: H04N19/30

CPC classification number: H04N19/30 ,  H04N19/184 ,  H04N19/186 ,  H04N19/46

Abstract: Techniques are described for processing video data to conform to a high dynamic range (HDR)/wide color gamut (WCG) color container. Operations may be applied to video data in certain color spaces to enable compression of High Dynamic Range (HDR) and Wide Color Gamut (WCG) video in such a way that an existing receiver without HDR and WCG capabilities would be able to display a viewable Standard Dynamic Range (SDR) video from the received bitstream without any additional processing. Certain embodiments enable delivery of a single bitstream from which an existing decoder obtains the viewable SDR video directly and an HDR capable receiver reconstruct the HDR and WCG video by applying the specified processing. Such embodiments may improve the compression efficiency of hybrid based video coding systems utilized for coding HDR and WCG video data.

Abstract translation: 描述了用于处理视频数据以符合高动态范围（HDR）/宽色域（WCG）彩色容器的技术。 可以将操作应用于某些色彩空间中的视频数据，以使得高动态范围（HDR）和宽色域（WCG）视频的压缩可以使得没有HDR和WCG能力的现有接收器能够显示可观看的标准 来自接收比特流的动态范围（SDR）视频，无需任何额外处理。 某些实施例使得能够传送现有解码器直接从其获得可观看的SDR视频的单个比特流，并且具有HDR能力的接收器通过应用指定的处理来重建HDR和WCG视频。 这样的实施例可以提高用于编码HDR和WCG视频数据的基于混合的视频编码系统的压缩效率。

公开(公告)号：WO2016200977A1

公开(公告)日：2016-12-15

申请号：PCT/US2016/036488

申请日：2016-06-08

Applicant: QUALCOMM INCORPORATED

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

IPC: H04N19/85 ,  H04N19/186 ,  G06T5/00 ,  H04N1/60

CPC classification number: H04N19/186 ,  G06T5/00 ,  G06T5/009 ,  G06T2207/20208 ,  H04N1/60 ,  H04N19/124 ,  H04N19/132 ,  H04N19/85

Abstract: In general, techniques are described for processing high dynamic range (HDR) and wide color gamut (WCG) video data for video coding. A device comprising a memory and a processor may perform the techniques. The memory may store compacted fractional chromaticity coordinate (FCC) formatted video data. The processor may inverse compact the compacted FCC formatted video data using one or more inverse adaptive transfer functions (TFs) to obtain decompacted FCC formatted video data. The processor may next inverse adjust a chromaticity component of the decompacted FCC formatted video data based on a corresponding luminance component of the decompacted FCC formatted video data to obtain inverse adjusted FCC formatted video data. The processor may convert the chromaticity component of the inverse adjusted FCC formatted video data from the FCC format to a color representation format to obtain High Dyanmic Range (HDR) and Wide Color Gamut (WCG) video data.

Abstract translation: 通常，描述了用于处理用于视频编码的高动态范围（HDR）和宽色域（WCG）视频数据的技术。 包括存储器和处理器的装置可以执行这些技术。 存储器可以存储压缩的分数色度坐标（FCC）格式的视频数据。 处理器可以使用一个或多个逆自适应传递函数（TF）对压缩的FCC格式的视频数据进行逆压缩，以获得解压缩的FCC格式的视频数据。 接下来，处理器可以基于分解的FCC格式的视频数据的对应亮度分量来反转调整分解的FCC格式的视频数据的色度分量，以获得反向调整的FCC格式的视频数据。 处理器可以将FCC调整后的FCC格式的视频数据的色度分量从FCC格式转换为颜色表示格式，以获得高分辨率范围（HDR）和宽色域（WCG）视频数据。

公开(公告)号：WO2016200969A1

公开(公告)日：2016-12-15

申请号：PCT/US2016/036480

申请日：2016-06-08

Applicant: QUALCOMM INCORPORATED

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

IPC: H04N19/117 ,  H04N19/186 ,  H04N19/85 ,  H04N19/98 ,  H04N19/136

CPC classification number: H04N19/1887 ,  H04N19/117 ,  H04N19/136 ,  H04N19/186 ,  H04N19/615 ,  H04N19/85 ,  H04N19/98

Abstract: This disclosure relates to processing video data, including processing video data to conform to a high dynamic range (HDR)/wide color gamut (WCG) color container. The techniques apply, on an encoding side, pre-processing of color values prior to application of a static transfer function and/or apply post-processing on the output from the application of the static transfer function. By applying pre-processing, the examples may generate color values that when compacted into a different dynamic range by application of the static transfer function linearize the output codewords. By applying post-processing, the examples may increase signal to quantization noise ratio. The examples may apply the inverse of the operations on the encoding side on the decoding side to reconstruct the color values.

Abstract translation: 本公开涉及处理视频数据，包括处理视频数据以符合高动态范围（HDR）/宽色域（WCG）颜色容器。 该技术在编码方面适用于在施加静态传递函数之前对颜色值进行预处理和/或对静态传递函数的应用的输出应用后处理。 通过应用预处理，这些示例可以产生当通过应用静态传递函数将其压缩成不同的动态范围时的线性化输出码字的颜色值。 通过应用后处理，这些示例可以将信号增加到量化噪声比。 这些示例可以将解码侧的编码侧的操作的倒数应用于颜色值。

公开(公告)号：WO2016200968A1

公开(公告)日：2016-12-15

申请号：PCT/US2016/036479

申请日：2016-06-08

Applicant: QUALCOMM INCORPORATED

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

IPC: H04N19/46 ,  H04N1/64 ,  H04N9/68 ,  H04N19/12 ,  H04N19/186

CPC classification number: H04N19/187 ,  H04N1/64 ,  H04N5/20 ,  H04N9/68 ,  H04N19/12 ,  H04N19/132 ,  H04N19/136 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186 ,  H04N19/46

Abstract: A device may determine, based on data in a bitstream, a luma sample (Y) of a pixel, a Cb sample of the pixel, and the Cr sample of the pixel. Furthermore, the device may obtain, from the bitstream, a first scaling factor and a second scaling factor. Additionally, the device may determine, based on the first scaling factor, the Cb sample for the pixel, and Y, a converted B sample (B) for the pixel. The device may determine, based on the second scaling factor, the Cr sample for the pixel, and Y, a converted R sample (R) for the pixel. The device may apply an electro-optical transfer function (EOTF) to convert Y, R, and B to a luminance sample for the pixel, a R sample for the pixel, and a B sample for the pixel, respectively.

Abstract translation: 设备可以基于比特流中的数据来确定像素的亮度样本（Y），像素的Cb样本和像素的Cr样本。 此外，设备可以从比特流获得第一缩放因子和第二缩放因子。 另外，设备可以基于第一缩放因子确定像素的Cb样本，以及Y，用于像素的转换的B样本（B）。 该装置可以基于第二比例因子确定像素的Cr样本，以及Y，用于像素的转换的R样本（R）。 该装置可以应用电光传递函数（EOTF）来将Y，R和B转换为像素的亮度样本，像素的R样本和像素的B样本。