公开(公告)号：US20160261861A1

公开(公告)日：2016-09-08

申请号：US14737252

申请日：2015-06-11

Applicant: QUALCOMM Incorporated

Inventor： Chengjie Tu ,  Wei-Jung Chien ,  Xianglin Wang ,  Jaehong Chon ,  In Suk Chong ,  Marta Karczewicz ,  Woo-Shik Kim ,  Xin Zhao

IPC: H04N19/103 ,  H04N19/567

CPC classification number: H04N19/14 ,  H04N19/109 ,  H04N19/119 ,  H04N19/147 ,  H04N19/157 ,  H04N19/174 ,  H04N19/176 ,  H04N19/567

Abstract: A video encoding device comprises a memory configured and at least one processor configured to: determine whether a metric meets a condition based on statistics, wherein the statistics are associated with a first video encoding mode checking order and a second video encoding mode checking order, responsive to determining that the metric meets the condition, select a first encoding mode checking order to encode the first block of video data responsive to determining that the condition is not met, select a second encoding mode checking order different from the first encoding mode checking order to encode the first block of video data, update the statistics based on the selected first or second encoding mode checking order, and encode a second block of video data, based on the updated statistics, and using the first or second mode checking order.

Abstract translation: 视频编码设备包括配置的存储器和至少一个处理器，其被配置为：确定度量是否满足基于统计的条件，其中所述统计与第一视频编码模式检查顺序和第二视频编码模式检查顺序相关联，响应 为了确定所述度量符合所述条件，响应于确定不满足所述条件，选择第一编码模式检查顺序以对所述第一视频数据块进行编码，选择与所述第一编码模式检查顺序不同的第二编码模式检查顺序 对视频数据的第一块进行编码，基于所选择的第一或第二编码模式检查顺序更新统计信息，并且基于更新的统计信息对第二块视频数据进行编码，并使用第一或第二模式检查顺序。

公开(公告)号：US09386307B2

公开(公告)日：2016-07-05

申请号：US13767676

申请日：2013-02-14

Applicant: QUALCOMM Incorporated

Inventor： Joel Sole Rojals ,  In Suk Chong ,  Marta Karczewicz

IPC: H04N7/12 ,  H04N5/917 ,  H04N19/136 ,  H04N19/70 ,  H04N19/13 ,  H04N19/184 ,  H04N19/82

CPC classification number: H04N19/136 ,  H04N19/13 ,  H04N19/184 ,  H04N19/70 ,  H04N19/82

Abstract: A video encoder generates a sequence of sample adaptive offset (SAO) syntax elements for a coding tree block. The SAO syntax elements include regular context-adaptive binary arithmetic coding (CABAC) coded bins for a color component and bypass-coded bins for the color component. None of the bypass-coded bins is between two of the regular CABAC-coded bins in the sequence. The video encoder uses regular CABAC to encode the regular CABAC-coded bins and uses bypass coding to encode the bypass-coded bins. The video encoder outputs the SAO syntax elements in a bitstream. A video decoder receives the bitstream, uses regular CABAC to decode the regular CABAC-coded bins, uses bypass coding to decode the bypass-coded bins, and modifies a reconstructed picture based on the SAO syntax elements.

Abstract translation: 视频编码器生成用于编码树块的采样自适应偏移（SAO）语法元素的序列。 SAO语法元素包括用于颜色分量的常规上下文自适应二进制算术编码（CABAC）编码箱和用于颜色分量的旁路编码箱。 没有一个旁路编码的存储区位于序列中的两个常规CABAC编码区间之间。 视频编码器使用常规CABAC对常规CABAC编码的存储区进行编码，并使用旁路编码对旁路编码的存储区进行编码。 视频编码器输出比特流中的SAO语法元素。 视频解码器接收比特流，使用常规CABAC来解码常规CABAC编码箱，使用旁路编码来解码旁路编码箱，并且基于SAO语法元素修改重构图像。

公开(公告)号：US20160156906A1

公开(公告)日：2016-06-02

申请号：US15018403

申请日：2016-02-08

Applicant: QUALCOMM Incorporated

Inventor： In Suk Chong ,  Marta Karczewicz

IPC: H04N19/117 ,  H04N19/176 ,  H04N19/182 ,  H04N19/96 ,  H04N19/61 ,  H04N19/70 ,  H04N19/82 ,  H04N19/85 ,  H04N19/14 ,  H04N19/42

CPC classification number: H04N19/117 ,  H04N7/26255 ,  H04N19/14 ,  H04N19/176 ,  H04N19/182 ,  H04N19/42 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82 ,  H04N19/85 ,  H04N19/96

Abstract: A filter unit of a video encoder or video decoder can determine a first metric for a group of pixels within a block of pixels, determine a second metric for the group of pixels, determine a filter based on the first metric and the second metric, and generate a filtered image by applying the filter to the group of pixels. The first metric and second metric can be an activity metric and a direction metric, respectively, or can be other metrics such as an edge metric, horizontal activity metric, vertical activity metric, or diagonal activity metric.

公开(公告)号：US09357235B2

公开(公告)日：2016-05-31

申请号：US13648367

申请日：2012-10-10

Applicant: Qualcomm Incorporated

Inventor： In Suk Chong ,  Sanjeev Kumar ,  Marta Karczewicz

IPC: H04N19/86 ,  H04N19/176 ,  H04N19/117 ,  H04N19/14 ,  H04N19/82

CPC classification number: H04N19/86 ,  H04N19/117 ,  H04N19/14 ,  H04N19/176 ,  H04N19/82

Abstract: Techniques for performing sample adaptive offset (SAO) and adaptive loop filter (ALF) processes in a video coding process are described. The SAO and ALF processes may be combined. In one example, the determination of offset values for a SAO filter process may be based on classifications used in an ALF process. In one example, an ALF classification that indicates a particular directional characteristic of a video block may be used to determine how and whether an SAO filter process is applied to each sample within the video block.

Abstract translation: 描述了在视频编码过程中执行采样自适应偏移（SAO）和自适应环路滤波器（ALF）处理的技术。 可以组合SAO和ALF过程。 在一个示例中，SAO滤波器过程的偏移值的确定可以基于在ALF过程中使用的分类。 在一个示例中，指示视频块的特定方向特性的ALF分类可用于确定如何以及是否将SAO滤波处理应用于视频块内的每个采样。

公开(公告)号：US20160134877A1

公开(公告)日：2016-05-12

申请号：US14536342

申请日：2014-11-07

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/176 ,  H04N19/105 ,  H04N19/122 ,  H04N19/139

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 coding unit (CU) block and a first corresponding block in a reference frame, and define branching conditions for branching of CU sizes based on the first SAD value, the branching conditions including a background condition and/or a homogeneous condition. The video coder may be configured to detect the background condition if the first SAD value of the CU block is less than a first threshold background value, and detect the homogeneous condition if a second SAD value of a sub-block of the CU block is between upper and lower homogeneous threshold values based on the first SAD value. The branching of the CU sizes may be based on detecting the background or homogeneous conditions.

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编码单元（CU）块和参考帧中的第一对应块之间的绝对差（SAD）值的第一和，并且基于 第一SAD值，分支条件包括背景条件和/或均匀条件。 如果CU块的第一SAD值小于第一阈值背景值，则视频编码器可以被配置为检测背景条件，并且如果CU块的子块的第二SAD值在 基于第一SAD值的上和下均匀阈值。 CU尺寸的分支可以基于检测背景或均匀条件。

公开(公告)号：US20140241417A1

公开(公告)日：2014-08-28

申请号：US14270155

申请日：2014-05-05

Applicant: QUALCOMM Incorporated

Inventor： In Suk Chong ,  Geert Van der Auwera ,  Marta Karczewicz

IPC: H04N19/105 ,  H04N19/196 ,  H04N19/70 ,  H04N19/167

CPC classification number: H04N19/105 ,  H04N19/117 ,  H04N19/14 ,  H04N19/167 ,  H04N19/176 ,  H04N19/196 ,  H04N19/463 ,  H04N19/70

Abstract: This disclosure describes techniques for performing sample adaptive offset signaling and coding in a video coding process. Techniques of the disclosure include both a merge-based and prediction-based signaling process for sample adaptive offset information (i.e., offset values and offset type). The techniques includes determining offset information for a current partition, comparing the offset information of the current partition with offset information of one or more neighbor partitions, coding a merge instruction in the case that the offset information of one of the one or more neighbor partitions is the same as the offset information of the current partition, and coding one of a plurality of prediction instructions in the case that the offset information of the one or more neighbor partitions is not the same as the offset information of the current partition.

Abstract translation: 本公开描述了在视频编码过程中执行采样自适应偏移信令和编码的技术。 本公开的技术包括用于样本自适应偏移信息（即，偏移值和偏移类型）的基于合并和基于预测的信令过程。 所述技术包括确定当前分区的偏移信息，将当前分区的偏移信息与一个或多个相邻分区的偏移信息进行比较，在一个或多个相邻分区之一的偏移信息为 与当前分区的偏移信息相同，并且在一个或多个相邻分区的偏移信息与当前分区的偏移信息不相同的情况下编码多个预测指令之一。

公开(公告)号：US20130258049A1

公开(公告)日：2013-10-03

申请号：US13829774

申请日：2013-03-14

Applicant: QUALCOMM INCORPORATED

Inventor： In Suk Chong ,  Jaehong Chon ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/70 ,  H04N19/117 ,  H04N19/174 ,  H04N19/176 ,  H04N19/80 ,  H04N19/82

Abstract: Systems, methods, and devices are disclosed that encode video, decode video, or both. These systems, methods, and devices generate and/or receive an enable syntax element in an encoded bitstream, wherein the enable syntax element indicates whether a loop filter is turned on or turned off for a group of video blocks. They also generate or receive one or more additional syntax elements identifying parameters for the loop filter for the group of video blocks in response to the enable syntax element indicating the loop filter is turned on for the group of video blocks. These systems, methods, and devices also perform the loop filter for the group of video blocks based on the received enable syntax element.

Abstract translation: 公开了对视频，解码视频或两者进行编码的系统，方法和设备。 这些系统，方法和设备在编码比特流中产生和/或接收启用语法元素，其中启用语法元素指示是否为一组视频块打开或关闭环路滤波器。 它们还响应于指示为视频块组接通环路滤波器的使能语法元素，生成或接收一个或多个附加语法元素，用于识别视频块组的环路滤波器的参数。 这些系统，方法和设备还基于接收到的使能语法元素对视频块组执行环路滤波器。

公开(公告)号：US20130136167A1

公开(公告)日：2013-05-30

申请号：US13682293

申请日：2012-11-20

Applicant: Qualcomm Incorporated

Inventor： In Suk Chong ,  Xianglin Wang ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/115 ,  H04N19/117 ,  H04N19/136 ,  H04N19/17 ,  H04N19/174 ,  H04N19/18 ,  H04N19/61 ,  H04N19/70 ,  H04N19/82

Abstract: This disclosure relates to techniques for performing sample adaptive offset (SAO) processes in a video coding process. A video coder may store sets of SAO information. The SAO information may include data indicative of offset values. The video coder may also store mapping information that maps at least some of the sets of SAO information for one or more sequence partitions of a frame of video data. Additionally, the video coder may perform the SAO processes for one of the partitions of the frame based on the stored SAO information and the stored mapping information.

Abstract translation: 本公开涉及用于在视频编码过程中执行采样自适应偏移（SAO）处理的技术。 视频编码器可以存储一组SAO信息。 SAO信息可以包括指示偏移值的数据。 视频编码器还可以存储映射信息，其映射视频数据帧的一个或多个序列分区的SAO信息集合中的至少一些。 此外，视频编码器可以基于存储的SAO信息和存储的映射信息，对帧的一个分区执行SAO处理。

公开(公告)号：US20130094569A1

公开(公告)日：2013-04-18

申请号：US13648367

申请日：2012-10-10

Applicant: QUALCOMM INCORPORATED

Inventor： In Suk Chong ,  Sanjeev Kumar ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/86 ,  H04N19/117 ,  H04N19/14 ,  H04N19/176 ,  H04N19/82

Abstract: Techniques for performing sample adaptive offset (SAO) and adaptive loop filter (ALF) processes in a video coding process are described. The SAO and ALF processes may be combined. In one example, the determination of offset values for a SAO filter process may be based on classifications used in an ALF process. In one example, an ALF classification that indicates a particular directional characteristic of a video block may be used to determine how and whether an SAO filter process is applied to each sample within the video block.

Abstract translation: 描述了在视频编码过程中执行采样自适应偏移（SAO）和自适应环路滤波器（ALF）处理的技术。 可以组合SAO和ALF过程。 在一个示例中，SAO滤波器过程的偏移值的确定可以基于在ALF过程中使用的分类。 在一个示例中，指示视频块的特定方向特性的ALF分类可用于确定如何以及是否将SAO滤波处理应用于视频块内的每个采样。