公开(公告)号：US20140211848A1

公开(公告)日：2014-07-31

申请号：US14342334

申请日：2012-08-09

申请人： Chih-Wei Hsu ,  Qian Huang ,  Jicheng An ,  Xun Guo ,  Yu-Wen Huang ,  Shaw-Min Lei

发明人： Chih-Wei Hsu ,  Qian Huang ,  Jicheng An ,  Xun Guo ,  Yu-Wen Huang ,  Shaw-Min Lei

IPC分类号： H04N19/117 ,  H04N19/82 ,  H04N19/50

CPC分类号： H04N19/117 ,  H04N19/14 ,  H04N19/176 ,  H04N19/186 ,  H04N19/50 ,  H04N19/82 ,  H04N19/86

摘要： A method and apparatus for deblocking of reconstructed video are disclosed. In one embodiment, the method divides a block boundary into two sub-boundaries and separates lines or column across the sub-boundaries into two groups. The deblocking filter decision for each group is determined based on the lines or columns in the respective group. In another embodiment, the method divides block edges of blocks in the LCUs into two edge groups, where the first edge group corresponds to horizontal block edges between two LCUs and the second edge group corresponds to remaining block edges not included in the first edge group. The number of lines processed by a vertical filter in the first edge group is less than the number of lines processed by a vertical filter in the second edge group. Accordingly, a system embodying the present invention has reduced storage requirement.

摘要翻译： 公开了一种重构视频解块的方法和装置。 在一个实施例中，该方法将块边界划分为两个子边界，并将跨越子边界的线或列分成两组。 基于相应组中的线或列确定每组的去块滤波器决定。 在另一个实施例中，该方法将LCU中的块的块边缘划分为两个边缘组，其中第一边缘组对应于两个LCU之间的水平块边缘，并且第二边缘组对应于未包括在第一边缘组中的剩余块边缘。 由第一边缘组中的垂直滤波器处理的线数小于由第二边缘组中的垂直滤波器处理的线数。 因此，体现本发明的系统减少了存储要求。

公开(公告)号：US09554128B2

公开(公告)日：2017-01-24

申请号：US14342334

申请日：2012-08-09

申请人： Chih-Wei Hsu ,  Qian Huang ,  Jicheng An ,  Xun Guo ,  Yu-Wen Huang ,  Shaw-Min Lei

发明人： Chih-Wei Hsu ,  Qian Huang ,  Jicheng An ,  Xun Guo ,  Yu-Wen Huang ,  Shaw-Min Lei

IPC分类号： H04N19/117 ,  H04N19/50 ,  H04N19/176 ,  H04N19/14 ,  H04N19/186 ,  H04N19/82 ,  H04N19/86

CPC分类号： H04N19/117 ,  H04N19/14 ,  H04N19/176 ,  H04N19/186 ,  H04N19/50 ,  H04N19/82 ,  H04N19/86

摘要： A method and apparatus for deblocking of reconstructed video are disclosed. In one embodiment, the method divides a block boundary into two sub-boundaries and separates lines or column across the sub-boundaries into two groups. The deblocking filter decision for each group is determined based on the lines or columns in the respective group. In another embodiment, the method divides block edges of blocks in the LCUs into two edge groups, where the first edge group corresponds to horizontal block edges between two LCUs and the second edge group corresponds to remaining block edges not included in the first edge group. The number of lines processed by a vertical filter in the first edge group is less than the number of lines processed by a vertical filter in the second edge group. Accordingly, a system embodying the present invention has reduced storage requirement.

摘要翻译： 公开了一种重构视频解块的方法和装置。 在一个实施例中，该方法将块边界划分为两个子边界，并将跨越子边界的线或列分成两组。 基于相应组中的线或列确定每组的去块滤波器决定。 在另一个实施例中，该方法将LCU中的块的块边缘划分为两个边缘组，其中第一边缘组对应于两个LCU之间的水平块边缘，并且第二边缘组对应于未包括在第一边缘组中的剩余块边缘。 由第一边缘组中的垂直滤波器处理的线数小于由第二边缘组中的垂直滤波器处理的线数。 因此，体现本发明的系统减少了存储要求。

公开(公告)号：US20130003843A1

公开(公告)日：2013-01-03

申请号：US13003092

申请日：2010-12-06

申请人： Xun Guo ,  Jicheng An ,  Yu-Wen Huang ,  Shaw-Min Lei

发明人： Xun Guo ,  Jicheng An ,  Yu-Wen Huang ,  Shaw-Min Lei

IPC分类号： H04N7/32 ,  H04N7/50

CPC分类号： H04N19/593 ,  H04N19/105 ,  H04N19/176 ,  H04N19/46 ,  H04N19/513 ,  H04N19/52 ,  H04N19/61

摘要： The invention provides a motion prediction method First, a coding unit (CU) of a current picture is processed, wherein the CU comprises at least a first prediction unit (PU) and a second PU. A second candidate set comprising a plurality of motion parameter candidates for the second PU is then determined, wherein at least a motion parameter candidate in the second candidate set is derive from a motion parameter predictor for a previously coded PU of the current picture, and the second candidate set is different from a first candidate set comprising a plurality of motion parameter candidates for the first PU. A motion parameter candidate is then selected from the second candidate set as a motion parameter predictor for the second PU. Finally, predicted samples are then generated from the motion parameter predictor of the second PU partition.

摘要翻译： 本发明提供一种运动预测方法首先，处理当前图像的编码单元（CU），其中CU至少包括第一预测单元（PU）和第二PU。 然后确定包括用于第二PU的多个运动参数候选的第二候选集，其中第二候选集中的至少一个运动参数候选是从当前图像的先前编码的PU的运动参数预测器导出的，并且 第二候选集不同于包括用于第一PU的多个运动参数候选的第一候选集。 然后从第二候选组中选择运动参数候选作为第二PU的运动参数预测器。 最后，从第二PU分区的运动参数预测器生成预测样本。

公开(公告)号：US20120230405A1

公开(公告)日：2012-09-13

申请号：US12995292

申请日：2010-08-06

申请人： Jicheng An ,  Xun Guo ,  Yu-Wen Huang ,  Shaw-Min Lei

发明人： Jicheng An ,  Xun Guo ,  Yu-Wen Huang ,  Shaw-Min Lei

IPC分类号： H04N7/32

CPC分类号： H04N19/109 ,  H04N19/105 ,  H04N19/11 ,  H04N19/147 ,  H04N19/176

摘要： Methods, encoders, and decoders with localized weighted prediction are disclosed. A decoding method includes decoding data for a current segment to generate decoded data including residuals and a weighted prediction parameter for the current segment. A weighted prediction for the current segment is generated based on the weighted prediction parameter. A predictor for the current segment is generated by intra/inter prediction. The weighted prediction and the predictor are combined to obtain a modified predictor, and the current segment is reconstructed according to the modified predictor and the residuals.

摘要翻译： 公开了具有局部加权预测的方法，编码器和解码器。 解码方法包括解码当前片段的数据，生成包括当前片段的残差和加权预测参数的解码数据。 基于加权预测参数生成当前段的加权预测。 通过帧内/帧间预测生成当前段的预测器。 加权预测和预测器被组合以获得修改的预测器，并且根据修改的预测器和残差重建当前段。

公开(公告)号：US09729879B2

公开(公告)日：2017-08-08

申请号：US13993063

申请日：2012-03-06

申请人： Jicheng An ,  Xun Guo ,  Qian Huang ,  Shaw-Min Lei

发明人： Jicheng An ,  Xun Guo ,  Qian Huang ,  Shaw-Min Lei

IPC分类号： H04N7/26 ,  H04N7/50 ,  H04N19/18 ,  H04N19/117 ,  H04N19/176 ,  H04N19/14 ,  H04N19/86

CPC分类号： H04N19/117 ,  H04N19/14 ,  H04N19/176 ,  H04N19/86

摘要： A method and apparatus for improved deblocking filter are disclosed. In one embodiment according to the present invention, determining the non-zero transform coefficients existence for a PU-only boundary is skipped and therefore the deblocking filter for PU-only boundary is eliminated if the condition of boundary strength equal to 1 is not fulfilled to avoid unnecessary deblocking. In another embodiment of the present invention, three gradients are determined for two pixel lines and filter ON/OFF decision is made based on the three gradient values of the two pixel lines. One aspect of the invention is related to filter strength selection between strong and weak filters. According to one embodiment, the filter strength selection is based on various gradient values of a pixel line across the block boundary. Another aspect of the invention is related to the weak filter.

公开(公告)号：US20130266061A1

公开(公告)日：2013-10-10

申请号：US13993063

申请日：2012-03-06

申请人： Jicheng An ,  Xun Guo ,  Qian Huang ,  Shaw-Min Lei

发明人： Jicheng An ,  Xun Guo ,  Qian Huang ,  Shaw-Min Lei

IPC分类号： H04N7/26

CPC分类号： H04N19/117 ,  H04N19/14 ,  H04N19/176 ,  H04N19/86

摘要： A method and apparatus for improved deblocking filter are disclosed. In one embodiment according to the present invention, determining the non-zero transform coefficients existence for a PU-only boundary is skipped and therefore the deblocking filter for PU-only boundary is eliminated if the condition of boundary strength equal to 1 is not fulfilled to avoid unnecessary deblocking. In another embodiment of the present invention, three gradients are determined for two pixel lines and filter ON/OFF decision is made based on the three gradient values of the two pixel lines. One aspect of the invention is related to filter strength selection between strong and weak filters. According to one embodiment, the filter strength selection is based on various gradient values of a pixel line across the block boundary. Another aspect of the invention is related to the weak filter.

摘要翻译： 公开了一种改进的去块滤波器的方法和装置。 在根据本发明的一个实施例中，对于仅PU边界确定非零变换系数的存在被跳过，因此如果边界强度等于1的条件不满足于仅用于PU的边界的去块滤波器 避免不必要的解锁。 在本发明的另一实施例中，针对两个像素线确定三个梯度，并且基于两个像素线的三个梯度值来进行滤波器ON / OFF判定。 本发明的一个方面涉及强和弱滤波器之间的滤波强度选择。 根据一个实施例，滤波器强度选择基于跨越块边界的像素线的各种梯度值。 本发明的另一方面涉及弱滤波器。

公开(公告)号：US20120236942A1

公开(公告)日：2012-09-20

申请号：US13236422

申请日：2011-09-19

申请人： Jian-Liang Lin ,  Yu-Pao Tsai ,  Yi-Wen Chen ,  Jicheng An ,  Yu-Wen Huang ,  Shaw-Min Lei

发明人： Jian-Liang Lin ,  Yu-Pao Tsai ,  Yi-Wen Chen ,  Jicheng An ,  Yu-Wen Huang ,  Shaw-Min Lei

IPC分类号： H04N7/32

CPC分类号： H04N19/513 ,  H04N19/105 ,  H04N19/176 ,  H04N19/46 ,  H04N19/52 ,  H04N19/56 ,  H04N19/57 ,  H04N19/583

摘要： A method and apparatus for deriving a temporal motion vector predictor (MVP) are disclosed. The MVP is derived for a current block of a current picture in Inter, or Merge, or Skip mode based on co-located reference blocks of a co-located block and a flag is used to indicate the co-located picture. More than one co-located reference blocks can be used to derive the temporal MVP and the co-located reference blocks can be selected from the co-located block as well as neighboring blocks of the co-located block. A search set comprises search motion vectors associated with the co-located reference block(s) is formed. The search motion vector (MV) corresponding to the co-located reference block in the same reference list is searched before the search MV in a different reference list. Various schemes to accommodate implicit method of deriving co-located picture are also disclosed.

摘要翻译： 公开了用于导出时间运动矢量预测器（MVP）的方法和装置。 基于同位置块的同位置参考块，针对Inter中的当前图像的当前块或合并或跳跃模式导出MVP，并且使用标志来指示同位置图像。 可以使用多于一个的同位置参考块来导出时间MVP，并且可以从共同定位的块以及相邻的块的相邻块中选择同位置的参考块。 搜索组包括形成与同位置参考块相关联的搜索运动矢量。 在不同参考列表中的搜索MV之前搜索与相同参考列表中的同位置参考块相对应的搜索运动矢量（MV）。 还公开了适用于导出同位置图片的隐式方法的各种方案。

公开(公告)号：US09609346B2

公开(公告)日：2017-03-28

申请号：US13236422

申请日：2011-09-19

申请人： Jian-Liang Lin ,  Yu-Pao Tsai ,  Yi-Wen Chen ,  Jicheng An ,  Yu-Wen Huang ,  Shaw-Min Lei

发明人： Jian-Liang Lin ,  Yu-Pao Tsai ,  Yi-Wen Chen ,  Jicheng An ,  Yu-Wen Huang ,  Shaw-Min Lei

IPC分类号： H04N19/56 ,  H04N19/513 ,  H04N19/52 ,  H04N19/57 ,  H04N19/583

CPC分类号： H04N19/513 ,  H04N19/105 ,  H04N19/176 ,  H04N19/46 ,  H04N19/52 ,  H04N19/56 ,  H04N19/57 ,  H04N19/583

摘要： A method and apparatus for deriving a temporal motion vector predictor (MVP) are disclosed. The MVP is derived for a current block of a current picture in Inter, or Merge, or Skip mode based on co-located reference blocks of a co-located block and a flag is used to indicate the co-located picture. More than one co-located reference blocks can be used to derive the temporal MVP and the co-located reference blocks can be selected from the co-located block as well as neighboring blocks of the co-located block. A search set comprises search motion vectors associated with the co-located reference block(s) is formed. The search motion vector (MV) corresponding to the co-located reference block in the same reference list is searched before the search MV in a different reference list. Various schemes to accommodate implicit method of deriving co-located picture are also disclosed.

公开(公告)号：US20120114034A1

公开(公告)日：2012-05-10

申请号：US13018431

申请日：2011-02-01

申请人： Yu-Wen Huang ,  Ching-Yeh Chen ,  Chih-Ming Fu ,  Chih-Wei Hsu ,  Yu-Lin Chang ,  Tzu-Der Chuang ,  Shaw-Min Lei

发明人： Yu-Wen Huang ,  Ching-Yeh Chen ,  Chih-Ming Fu ,  Chih-Wei Hsu ,  Yu-Lin Chang ,  Tzu-Der Chuang ,  Shaw-Min Lei

IPC分类号： H04N7/12

CPC分类号： H04N19/174 ,  H04N19/103 ,  H04N19/119 ,  H04N19/126 ,  H04N19/13 ,  H04N19/146 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/463 ,  H04N19/70 ,  H04N19/96

摘要： In the current high efficiency video coding development, each LCU has its own quantization parameter (QP) and the difference between a current QP and a reference QP is transmitted instead of the QP value itself. Since the LCU is much larger than the macroblock of AVC/H.264, using one delta QP per LCU may cause rate control unable to adapt to the bitrate quickly enough. Consequently there is a need to adopt delta QP in units smaller than LCU to provide more granular rate control. Furthermore, it is desirable to develop a system that is capable of facilitating more flexible delta QP. Accordingly, adaptive quantization parameter processing is disclosed where a QP minimum CU size for incorporating or deriving a delta QP is indicated selectively in the slice level or in the sequence/picture level. In one variation, the delta QP is incorporated or derived only if nonzero quantized transform coefficients exist in a leaf CU that is larger than the QP minimum CU size. In another variation, quantization parameter information is only incorporated or derived when a leaf CU has any nonzero quantized transform coefficient. In yet another variation, a flag is used to indicate whether one delta QP per LCU is transmitted if the LCU has any nonzero quantized transform coefficient or one delta QP per leaf CU is transmitted if the leaf CU has any nonzero quantized transform coefficient.

摘要翻译： 在当前的高效率视频编码开发中，每个LCU具有其自己的量化参数（QP），并且发送当前QP与参考QP之间的差异而不是QP值本身。 由于LCU比AVC / H.264的宏块大得多，因此使用每个LCU的一个delta QP可能导致速率控制不能足够快地适应比特率。 因此，需要采用小于LCU的单位的delta QP来提供更细粒度的速率控制。 此外，期望开发能够促进更灵活的delta QP的系统。 因此，公开了自适应量化参数处理，其中用于合并或导出增量QP的QP最小CU尺寸在片级或序列/画面级别中有选择地表示。 在一个变型中，只有当非零量化变换系数存在于大于QP最小CU尺寸的叶CU中时，才加入或推导增量QP。 在另一个变型中，当叶CU具有任何非零量化变换系数时，仅结合或导出量化参数信息。 在又一个变型中，如果LCU具有任何非零量化变换系数，或者如果叶CU具有任何非零量化变换系数，则发送每个叶CU，则发送每个LCU一个ΔQP是否被发送的标志。

公开(公告)号：US08654860B2

公开(公告)日：2014-02-18

申请号：US12966411

申请日：2010-12-13

申请人： Yu-Wen Huang ,  Ching-Yeh Chen ,  Chih-Ming Fu ,  Chih-Wei Hsu ,  Shaw-Min Lei

发明人： Yu-Wen Huang ,  Ching-Yeh Chen ,  Chih-Ming Fu ,  Chih-Wei Hsu ,  Shaw-Min Lei

IPC分类号： H04N7/26

CPC分类号： H04N19/174 ,  H04N19/61 ,  H04N19/70

摘要： An apparatus and method for video coding based on flexible slice structure are disclosed. In the recent high efficiency video coding (HEVC) development, the slice may contain multiple LCUs instead of macroblocks. The LCU size being considered is 64×64 pixels which is much larger than the macroblock size of 16×16 pixels. Compared with the macroblock aligned slice for H.264, the LCU-aligned slice for HEVC does not provide enough granularities for dividing video frames. Consequently, a flexible slice structure is developed where slice partition is based on smaller coding units. In the flexible slice structure, the first LCU and the last LCU of the slice are allowed to be a fractional LCU, which is derived from a whole LCU using quadtree partition. Syntax elements are also developed to enable conveyance of flexible slice structure between an encoder and a decoder efficiently.

摘要翻译： 公开了一种基于柔性切片结构的视频编码的装置和方法。 在最近的高效率视频编码（HEVC）开发中，切片可以包含多个LCU而不是宏块。 所考虑的LCU尺寸是64×64像素，远大于16×16像素的宏块大小。 与H.264的宏块排列片相比，HEVC的LCU对齐片不能提供足够的粒度来分割视频帧。 因此，开发了一种灵活的切片结构，其中切片分区基于较小的编码单位。 在柔性切片结构中，切片的第一个LCU和最后一个LCU被允许为使用四叉树分区的整个LCU导出的分数LCU。 还开发了语法元件以有效地在编码器和解码器之间传送柔性片结构。