公开(公告)号：US09906797B2

公开(公告)日：2018-02-27

申请号：US14879451

申请日：2015-10-09

Applicant: BROADCOM CORPORATION

Inventor： Brian Heng ,  Wade K. Wan ,  Zhijie Yang

IPC: H04N19/00 ,  H04N19/164 ,  H04N19/30 ,  H04N19/103 ,  H04N19/86 ,  H04N19/40 ,  H04N19/895

CPC classification number: H04N19/164 ,  H04N19/103 ,  H04N19/30 ,  H04N19/40 ,  H04N19/86 ,  H04N19/895

Abstract: Multi-mode error concealment, recovery and resilience coding. Adaptation of a number of coding units (CUs) employed in accordance with video coding may be made as a function of error. As a number of errors increases, the respective number of CUs may correspondingly increase (e.g., which may be made in accompaniment with a reduction of CU size). As a number of errors decreases, the respective number of CUs may correspondingly decrease (e.g., which may be made in accompaniment with an increase of CU size). Such errors may be associated with a type of source providing a video signal, a type of error resilience coding employed, communication link and/or channel conditions, a remote error characteristic (e.g., such as associated with a source device and/or destination device), a local error characteristic (e.g., such as associated with operations and/or processing within a given device), and/or any other type of consideration.

公开(公告)号：US09414060B2

公开(公告)日：2016-08-09

申请号：US13737309

申请日：2013-01-09

Applicant: Broadcom Corporation

Inventor： Brian Heng ,  Xuemin Chen ,  Frederick G. Walls

IPC: H04N19/523 ,  G06T7/20 ,  H04N5/14 ,  H04N7/01

CPC classification number: H04N19/523 ,  G06T7/223 ,  G06T2207/10016 ,  G06T2207/20016 ,  H04N5/145 ,  H04N7/014

Abstract: Aspects of a method and system for hierarchical motion estimation with multi-layer sub-pixel accuracy and motion vector smoothing are presented. Aspects of the system may include hierarchical motion vector computation that enables motion vectors to be computed at each level in the hierarchy based on a distinct pixel resolution level. A smoothing algorithm may be utilized to suppress spurious motion vector generation. The motion vectors computed at one level in the hierarchy may be utilized when computing motion vectors in a subsequent level. A bias value may be computed for each motion vector that provides an evaluation metric that may enable determination of whether the computed motion vector is to be utilized to enable generation of the interpolated image frame.

公开(公告)号：US20160037171A1

公开(公告)日：2016-02-04

申请号：US14879451

申请日：2015-10-09

Applicant: BROADCOM CORPORATION

Inventor： Brian Heng ,  Wade K. Wan ,  Zhijie Yang

IPC: H04N19/164 ,  H04N19/103 ,  H04N19/86 ,  H04N19/30 ,  H04N19/40 ,  H04N19/895

CPC classification number: H04N19/164 ,  H04N19/103 ,  H04N19/30 ,  H04N19/40 ,  H04N19/86 ,  H04N19/895

Abstract: Multi-mode error concealment, recovery and resilience coding. Adaptation of a number of coding units (CUs) employed in accordance with video coding may be made as a function of error. As a number of errors increases, the respective number of CUs may correspondingly increase (e.g., which may be made in accompaniment with a reduction of CU size). As a number of errors decreases, the respective number of CUs may correspondingly decrease (e.g., which may be made in accompaniment with an increase of CU size). Such errors may be associated with a type of source providing a video signal, a type of error resilience coding employed, communication link and/or channel conditions, a remote error characteristic (e.g., such as associated with a source device and/or destination device), a local error characteristic (e.g., such as associated with operations and/or processing within a given device), and/or any other type of consideration.

公开(公告)号：US20130343447A1

公开(公告)日：2013-12-26

申请号：US13783565

申请日：2013-03-04

Applicant: BROADCOM CORPORATION

Inventor： Peisong Chen ,  Brian Heng ,  Wade K. Wan

IPC: H04N7/26

CPC classification number: H04N19/82

Abstract: Adaptive loop filter (ALF) padding in accordance with video coding. Various types of video processing are performed including performing virtual padding. When a filter coefficients collocated pixel is not available, that pixel may be replaced using an available pixel within a given location within a filter to process a number of pixels. For example, an available pixel located within the center of such a filter (e.g., which may be a cross shaped filter including a predetermined number of pixels, such as 18 pixels in one instance) may be used to replace those pixel locations which are not available in accordance with such virtual padding. With respect to the implementation of such an adaptive loop filter (ALF), such an ALF may be implemented to process a signal output from a de-blocking filter, from a sample adaptive offset (SAO) filter, and/or from a combined de-blocking/SAO filter in various implementations.

Abstract translation: 根据视频编码的自适应环路滤波器（ALF）填充。 执行各种类型的视频处理，包括执行虚拟填充。 当滤波器系数并置像素不可用时，可以使用滤波器内的给定位置内的可用像素来替换该像素以处理多个像素。 例如，可以使用位于这种滤波器的中心内的可用像素（例如，其可以是包括预定数量的像素的十字形滤光器，例如在一个实例中为18像素），以代替不是的像素位置 根据这种虚拟填充可用。 关于这样的自适应环路滤波器（ALF）的实现，可以实现这样的ALF来处理从解块滤波器输出的信号，来自采样自适应偏移（SAO）滤波器和/或从组合的de 阻塞/ SAO过滤器。

公开(公告)号：US20130329796A1

公开(公告)日：2013-12-12

申请号：US13967984

申请日：2013-08-15

Applicant: Broadcom Corporation

Inventor： Xuemin Chen ,  Brian Heng

IPC: H04N7/36

CPC classification number: H04N19/523 ,  H04N7/0127 ,  H04N7/014 ,  H04N19/132 ,  H04N19/51 ,  H04N19/527 ,  H04N19/553 ,  H04N19/587

Abstract: Certain aspects of a method and system for motion-compensated picture rate up-conversion (PRUC) of digital video using picture boundary processing may include generating one or more forward motion vectors and one or more backward motion vectors based on extracted picture rate up-conversion (PRUC) data. A cost of performing motion estimation of a particular block along the generated forward motion vectors and the generated backward motion vectors corresponding to the particular block may be calculated. The particular block may be a boundary block. A motion vector with the least cost may be selected and motion compensated to generate a plurality of interpolated pictures.

Abstract translation: 使用图像边界处理的数字视频的运动补偿图像比率上变频（PRUC）的方法和系统的某些方面可以包括基于提取的图像比率上变换产生一个或多个前向运动矢量和一个或多个后向运动矢量 （PRUC）数据。 可以计算沿所产生的前向运动矢量执行特定块的运动估计和对应于特定块的生成的后向运动矢量的成本。 特定块可以是边界块。 可以选择具有最低成本的运动矢量并进行运动补偿以生成多个内插图像。

公开(公告)号：US09247250B2

公开(公告)日：2016-01-26

申请号：US13967984

申请日：2013-08-15

Applicant: Broadcom Corporation

Inventor： Xuemin Chen ,  Brian Heng

IPC: H04N19/00 ,  H04N19/51 ,  H04N19/132 ,  H04N19/527 ,  H04N19/523 ,  H04N19/553 ,  H04N19/587 ,  H04N7/01

CPC classification number: H04N19/523 ,  H04N7/0127 ,  H04N7/014 ,  H04N19/132 ,  H04N19/51 ,  H04N19/527 ,  H04N19/553 ,  H04N19/587

Abstract: Certain aspects of a method and system for motion-compensated picture rate up-conversion (PRUC) of digital video using picture boundary processing may include generating one or more forward motion vectors and one or more backward motion vectors based on extracted picture rate up-conversion (PRUC) data. A cost of performing motion estimation of a particular block along the generated forward motion vectors and the generated backward motion vectors corresponding to the particular block may be calculated. The particular block may be a boundary block. A motion vector with the least cost may be selected and motion compensated to generate a plurality of interpolated pictures.

公开(公告)号：US20130121420A1

公开(公告)日：2013-05-16

申请号：US13737309

申请日：2013-01-09

Applicant: BROADCOM CORPORATION

Inventor： Brian Heng ,  Xuemin Chen ,  Frederick G. Walls

IPC: H04N7/26

CPC classification number: H04N19/523 ,  G06T7/223 ,  G06T2207/10016 ,  G06T2207/20016 ,  H04N5/145 ,  H04N7/014

Abstract: Aspects of a method and system for hierarchical motion estimation with multi-layer sub-pixel accuracy and motion vector smoothing are presented. Aspects of the system may include hierarchical motion vector computation that enables motion vectors to be computed at each level in the hierarchy based on a distinct pixel resolution level. A smoothing algorithm may be utilized to suppress spurious motion vector generation. The motion vectors computed at one level in the hierarchy may be utilized when computing motion vectors in a subsequent level. A bias value may be computed for each motion vector that provides an evaluation metric that may enable determination of whether the computed motion vector is to be utilized to enable generation of the interpolated image frame.