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51. 发明授权

US09124898B2 Method and apparatus of temporal motion vector prediction 有权
标题翻译：时间运动矢量预测的方法和装置
公开(公告)号：US09124898B2
公开(公告)日：2015-09-01
申请号：US13039555
申请日：2011-03-03
申请人： Yu-Pao Tsai , Jian-Liang Lin , Yu-Wen Huang , Shaw-Min Lei
发明人： Yu-Pao Tsai , Jian-Liang Lin , Yu-Wen Huang , Shaw-Min Lei
IPC分类号： H04N7/26 , H04N19/577 , H04N19/51 , H04N19/52 , H04N19/61
CPC分类号： H04N19/577 , H04N19/109 , H04N19/176 , H04N19/52 , H04N19/61
摘要： An apparatus and method for motion vector prediction for a current block in a picture are disclosed. In video coding systems, the spatial and temporal redundancy is exploited using spatial and temporal prediction to reduce the information to be transmitted. Motion Vector Prediction (MVP) has been used to further conserve the bitrate associated with motion vector. In conventional temporal MVP, the predictor is often based on a single candidate such as the co-located motion vector in the previous frame/picture. If the co-located motion vector in the previous frame/picture does not exist, the predictor for the current block is not available. A technique for improved MVP is disclosed where the MVP utilized multiple candidates based on co-located motion vectors from future and/or past reference pictures. The candidates are arranged according to priority order to provide better availability of MVP and also to provide more accurate prediction. Furthermore, the MVP technique disclosed can be operated in a closed-loop fashion so that no additional side information or minimum additional side information is required.
摘要翻译：公开了一种用于图像中当前块的运动矢量预测的装置和方法。在视频编码系统中，使用空间和时间预测来利用空间和时间冗余来减少要发送的信息。运动矢量预测（MVP）已被用于进一步节省与运动矢量相关的比特率。在传统的时间MVP中，预测器通常基于诸如前一帧/图像中的同位置运动矢量的单个候选。如果前一帧/图像中的同位置运动矢量不存在，则当前块的预测器不可用。公开了一种用于改进MVP的技术，其中MVP基于来自未来和/或过去的参考图片的同位置运动矢量利用多个候选。候选人按照优先顺序排列，以提供更好的MVP可用性，并提供更准确的预测。此外，所公开的MVP技术可以以闭环方式操作，使得不需要额外的辅助信息或最小的附加侧信息。

52. 发明授权

US09036692B2 Motion prediction method 有权
标题翻译：运动预测方法
公开(公告)号：US09036692B2
公开(公告)日：2015-05-19
申请号：US12957644
申请日：2010-12-01
申请人： Yu-Pao Tsai , Chih-Ming Fu , Jian-Liang Lin , Yu-Wen Huang , Shaw-Min Lei
发明人： Yu-Pao Tsai , Chih-Ming Fu , Jian-Liang Lin , Yu-Wen Huang , Shaw-Min Lei
IPC分类号： H04N19/513 , H04N19/56
CPC分类号： H04N19/56 , H04N19/172 , H04N19/513
摘要： A motion prediction method is provided. The method has the following steps of: determining a plurality of candidate units corresponding to a current unit of a current frame; obtaining a plurality of motion vectors of the candidate units; calculating a plurality of temporal scaling factors of the candidate units according to a plurality of temporal distances between a plurality of reference frames of the motion vectors and the current frame; scaling the motion vectors of the candidate units according to the temporal scaling factors to obtain a plurality of scaled motion vectors; and selecting a motion vector predictor for motion prediction of the current unit from the candidate units according to the scaled motion vectors.
摘要翻译：提供了一种运动预测方法。该方法具有以下步骤：确定与当前帧的当前单位对应的多个候选单元; 获得所述候选单元的多个运动矢量; 根据运动矢量的多个参考帧与当前帧之间的多个时间距离来计算候选单元的多个时间缩放因子; 根据时间缩放因子缩放候选单元的运动矢量以获得多个缩放的运动矢量; 以及根据所述缩放的运动矢量从候选单元中选择用于当前单位的运动预测的运动矢量预测器。

53. 发明授权

US08861617B2 Method and apparatus of region-based adaptive loop filtering 有权
标题翻译：基于区域的自适应环路滤波的方法和装置
公开(公告)号：US08861617B2
公开(公告)日：2014-10-14
申请号：US13177343
申请日：2011-07-06
申请人： Ching-Yeh Chen , Chih-Ming Fu , Chia-Yang Tsai , Yu-Wen Huang , Shaw-Min Lei
发明人： Ching-Yeh Chen , Chih-Ming Fu , Chia-Yang Tsai , Yu-Wen Huang , Shaw-Min Lei
IPC分类号： H04N7/26 , H04N19/82 , H04N19/17 , H04N19/117 , H04N19/147 , H04N19/127
CPC分类号： H04N19/00103 , H04N19/117 , H04N19/127 , H04N19/147 , H04N19/17 , H04N19/82
摘要： In a block-based motion compensated system, coding noises may arise due to lossy operations. Adaptive loop filter (ALF) is a technique used to improve the quality. A pixel adaptive (PA) ALF method was developed that uses the Sum-modified Laplacian Measure (SLM) to classify pixels and applies a respective ALF filter to each pixel according to the SLM. While the PA ALF achieves better performance over a conventional single filter (SF) based ALF, the PA ALF causes higher complexity and consumes more power due to the high complexity and per-pixel filter switching. Accordingly region based ALF scheme is disclosed which allows adaptive filter selection on a region by region basis and does not require per-pixel filter switching. In one embodiment according to the present invention, a picture is divided into M×N regions. The region based ALF also allows region merging for the M×N regions to improve performance. In another aspect of the present invention, the optimal ALF design also takes into consideration of the system complexity by using rate-distortion-complexity optimization (RDCO). The RDCO technique is also applied to sample adaptive offset (SAO) design.
摘要翻译：在基于块的运动补偿系统中，由于有损操作可能会产生编码噪声。自适应环路滤波器（ALF）是一种用于提高质量的技术。开发了像素自适应（PA）ALF方法，其使用Sum-Modified Laplacian Measure（SLM）对像素进行分类，并根据SLM对每个像素应用相应的ALF滤波器。虽然PA ALF比传统的基于单滤波器（SF）的ALF具有更好的性能，但是由于高复杂性和每像素滤波器切换，PA ALF导致更高的复杂度并且消耗更多的功率。公开了基于区域的ALF方案，其允许在逐个区域的基础上进行自适应滤波器选择，并且不需要每像素滤波器切换。在根据本发明的一个实施例中，图片被分成M×N个区域。基于区域的ALF还允许区域合并M×N区域以提高性能。在本发明的另一方面，最佳ALF设计还通过使用速率 - 失真 - 复杂度优化（RDCO）来考虑系统的复杂性。 RDCO技术也适用于采样自适应偏移（SAO）设计。

54. 发明申请

US20130243098A1 METHOD AND APPARATUS FOR DERIVATION OF MOTION VECTOR CANDIDATE AND MOTION VECTOR PREDICTION CANDIDATE 有权
标题翻译：用于派生运动矢量候选和运动矢量预测候选的方法和装置
公开(公告)号：US20130243098A1
公开(公告)日：2013-09-19
申请号：US13990345
申请日：2012-03-13
申请人： Jian-Liang Lin , Yi-Wen Chen , Yu-Pao Tsai , Yu-Wen Huang , Shaw-Min Lei
发明人： Jian-Liang Lin , Yi-Wen Chen , Yu-Pao Tsai , Yu-Wen Huang , Shaw-Min Lei
IPC分类号： H04N7/36
CPC分类号： H04N19/52 , H04N19/533 , H04N19/56
摘要： An apparatus and method for deriving a motion vector predictor are disclosed. A search set comprising of multiple (spatial, or temporal) search MVs with priority is determined, wherein the search MVs for multiple neighboring reference block or one or more co-located reference blocks arc configured into multiple search MV groups. In order to improve coding efficiency, embodiments according to the present invention, perform redundancy check every time after a search MV group is searched to determine whether an available search MV found. If an available search MV is found and the available search MV is not the same as a previously derived motion vector predictor (MVP), the available search MV is used as the MVP and the MVP derivation process terminates. Otherwise, the MVP derivation process moves to the next reference block. The search MV group can be configured to include different search MV(s) associated with reference blocks.
摘要翻译：公开了一种用于导出运动矢量预测器的装置和方法。确定包括具有优先级的多个（空间或时间）搜索MV的搜索集合，其中用于多个相邻参考块或一个或多个同位置参考块的搜索MV被配置成多个搜索MV组。为了提高编码效率，根据本发明的实施例，在搜索MV组被搜索之后每次执行冗余校验，以确定是否找到可用的搜索MV。如果找到可用的搜索MV并且可用的搜索MV与先前导出的运动向量预测器（MVP）不相同，那么使用可用的搜索MV作为MVP并且MVP导出处理终止。否则，MVP导出过程移动到下一个参考块。搜索MV组可以被配置为包括与参考块相关联的不同搜索MV。

55. 发明申请

US20120106652A1 Apparatus and Method for High Efficiency Video Coding Using Flexible Slice Structure 有权
标题翻译：使用柔性切片结构的高效率视频编码的装置和方法
公开(公告)号：US20120106652A1
公开(公告)日：2012-05-03
申请号：US12966411
申请日：2010-12-13
申请人： Yu-Wen Huang , Chih-Ming Fu , Ching-Yeh Chen , Chih-Wei Hsu , Shaw-Min Lei
发明人： Yu-Wen Huang , Chih-Ming Fu , Ching-Yeh Chen , 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的宏块对准切片相比，HEVC的LCU对齐切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。

56. 发明申请

US20110176612A1 Motion Prediction Method 有权
标题翻译：运动预测方法
公开(公告)号：US20110176612A1
公开(公告)日：2011-07-21
申请号：US12957644
申请日：2010-12-01
申请人： Yu-Pao Tsai , Chih-Ming Fu , Jian-Liang Lin , Yu-Wen Huang , Shaw-Min Lei
发明人： Yu-Pao Tsai , Chih-Ming Fu , Jian-Liang Lin , Yu-Wen Huang , Shaw-Min Lei
IPC分类号： H04N11/02 , H04N7/26
CPC分类号： H04N19/56 , H04N19/172 , H04N19/513
摘要： The invention provides a motion prediction method. First, a plurality of candidate units corresponding to a current unit of a current frame is determined A plurality of motion vectors of the candidate units is then obtained. A plurality of temporal scaling factors of the candidate units is then calculated according to a plurality of temporal distances between a plurality of reference frames of the motion vectors and the current frame. The motion vectors of the candidate units are then scaled according to the temporal scaling factors to obtain a plurality of scaled motion vectors. Finally, a motion vector predictor for motion prediction of the current unit is then selected from the candidate units according to the scaled motion vectors.
摘要翻译：本发明提供一种运动预测方法。首先，确定与当前帧的当前单位对应的多个候选单元，然后获得候选单元的多个运动矢量。然后根据运动矢量的多个参考帧和当前帧之间的多个时间距离来计算候选单元的多个时间缩放因子。然后根据时间缩放因子对候选单元的运动矢量进行缩放以获得多个缩放运动矢量。最后，根据缩放的运动矢量，从候选单元中选择用于当前单元的运动预测的运动矢量预测器。

57. 发明授权

US10123008B2 Method and apparatus for coding of intra prediction mode 有权
公开(公告)号：US10123008B2
公开(公告)日：2018-11-06
申请号：US14123093
申请日：2012-06-14
申请人： Tzu-Der Chuang , Ching-Yeh Chen , Yu-Wen Huang , Shan Liu , Zhi Zhou , Shaw-Min Lei
发明人： Tzu-Der Chuang , Ching-Yeh Chen , Yu-Wen Huang , Shan Liu , Zhi Zhou , Shaw-Min Lei
IPC分类号： H04N7/32 , H04N7/26 , H04N19/11 , H04N19/159 , H04N19/176 , H04N19/70 , H04N19/593 , H04N19/463 , H04N19/186 , H04N19/136 , H04N19/169 , H04N19/44 , H04N19/91
摘要： Embodiments according to the present invention configure the intra prediction mode candidates into multi-level MPM sets, which comprise at least a first-level MPM set and a second-level MPM set. Encoding or decoding a current intra prediction mode is based on the multi-level MPM sets, where one syntax element of the syntax information to be generated or decoded respectively is associated with evaluating the current intra prediction mode using the first-level MPM set. A method and apparatus for chroma intra prediction mode encoding and decoding are also disclosed. The chroma intra prediction mode set includes a Luma-based chroma prediction Mode (LM), a Direct Mode (DM) and four other modes. The codeword set comprises variable-length codewords and fixed-length codewords, and the fixed-length codewords are longer than the variable-length codewords. The variable-length codewords are used for the DM and LM, and the fixed-length codewords are used for the four other modes.

58. 发明授权

US09307239B2 Method and apparatus for derivation of motion vector candidate and motion vector prediction candidate 有权
标题翻译：用于推导运动矢量候选和运动矢量预测候选的方法和装置
公开(公告)号：US09307239B2
公开(公告)日：2016-04-05
申请号：US13990345
申请日：2012-03-13
申请人： Jian-Liang Lin , Yi-Wen Chen , Yu-Pao Tsai , Yu-Wen Huang , Shaw-Min Lei
发明人： Jian-Liang Lin , Yi-Wen Chen , Yu-Pao Tsai , Yu-Wen Huang , Shaw-Min Lei
IPC分类号： H04N11/04 , H04N19/56 , H04N19/52
CPC分类号： H04N19/52 , H04N19/533 , H04N19/56
摘要： An apparatus and method for deriving a motion vector predictor are disclosed. A search set comprising of multiple (spatial, or temporal) search MVs with priority is determined, wherein the search MVs for multiple neighboring reference block or one or more co-located reference blocks are configured into multiple search MV groups. In order to improve coding efficiency, embodiments according to the present invention, perform redundancy check every time after a search MV group is searched to determine whether an available search MV found. If an available search MV is found and the available search MV is not the same as a previously derived motion vector predictor (MVP), the available search MV is used as the MVP and the MVP derivation process terminates. Otherwise, the MVP derivation process moves to the next reference block. The search MV group can be configured to include different search MV(s) associated with reference blocks.
摘要翻译：公开了一种用于导出运动矢量预测器的装置和方法。确定包括具有优先级的多个（空间或时间）搜索MV的搜索集，其中多个相邻参考块或一个或多个同位置参考块的搜索MV被配置为多个搜索MV组。为了提高编码效率，根据本发明的实施例，在搜索MV组被搜索之后每次执行冗余校验以确定是否找到可用的搜索MV。如果找到可用的搜索MV并且可用的搜索MV与先前导出的运动向量预测器（MVP）不相同，那么使用可用的搜索MV作为MVP并且MVP导出处理终止。否则，MVP导出过程移动到下一个参考块。搜索MV组可以被配置为包括与参考块相关联的不同搜索MV。

59. 发明授权

US09094658B2 Method and apparatus of adaptive loop filtering 有权
标题翻译：自适应环路滤波的方法和装置
公开(公告)号：US09094658B2
公开(公告)日：2015-07-28
申请号：US13093068
申请日：2011-04-25
申请人： Chih-Ming Fu , Ching-Yeh Chen , Chia-Yang Tsai , Yu-Wen Huang , Shaw-Min Lei
发明人： Chih-Ming Fu , Ching-Yeh Chen , Chia-Yang Tsai , Yu-Wen Huang , Shaw-Min Lei
IPC分类号： H04N19/10 , H04N19/86 , H04N19/159 , H04N19/176 , H04N19/196 , H04N19/134 , H04N19/96 , H04N19/117 , H04N19/463 , H04N19/14 , H04N19/137 , H04N19/186 , H04N19/154 , H04N19/174 , H04N19/82 , H04N19/42
CPC分类号： H04N19/117 , H04N19/10 , H04N19/115 , H04N19/129 , H04N19/134 , H04N19/137 , H04N19/14 , H04N19/154 , H04N19/157 , H04N19/159 , H04N19/174 , H04N19/176 , H04N19/186 , H04N19/196 , H04N19/439 , H04N19/463 , H04N19/82 , H04N19/86 , H04N19/96
摘要： In a block-based motion compensated system, coding noises may arise due to lossy operations such as quantization. Deblocking is often used to alleviate visibility of coding artifacts by applying filtering across block boundaries adaptively. In the recent HEVC development, adaptive loop filtering (ALF) is being adopted to process deblocked reconstruction frames. Adaptive loop filtering is applied to reconstructed video data across multiple frames to reduce visibility of coding artifacts in the temporal domain. In a HEVC system, conventional ALF can be selectively turned ON or OFF for each block in a frame or a slice. The advanced ALF disclosed here allows a choice of multiple filter sets that can be applied to the reconstructed video data adaptively. Furthermore, the advanced ALF adopts a new unit for the filtering process to apply so that more flexible and/or localized processing can be provided. Furthermore, the advanced ALF allows a decoder to derive respective information for applying the filtering process without side information.
摘要翻译：在基于块的运动补偿系统中，由于诸如量化的有损操作，可能会产生编码噪声。解块通常用于通过自适应地跨越块边界应用过滤来减轻编码伪像的可视性。在最近的HEVC开发中，正在采用自适应环路滤波（ALF）来处理解块重建帧。自适应环路滤波被应用于跨多帧的重建视频数据，以减少时域中编码伪像的可见性。在HEVC系统中，对于帧或片中的每个块，可以选择性地将常规ALF打开或关闭。这里公开的高级ALF允许选择可以自适应地应用于重建的视频数据的多个滤波器组。此外，先进的ALF采用新的过滤单元进行应用，从而可以提供更灵活和/或本地化的处理。此外，高级ALF允许解码器导出用于应用无侧信息的过滤处理的相应信息。

60. 发明申请

US20140086323A1 METHOD AND APPARATUS FOR CODING OF INTRA PREDICTION MODE 审中-公开
标题翻译：内部预测模式编码的方法和装置
公开(公告)号：US20140086323A1
公开(公告)日：2014-03-27
申请号：US14123093
申请日：2012-06-14
申请人： Tzu-Der Chuang , Ching-Yeh Chen , Yu-Wen Huang , Shan Liu , Zhi Zhou , Shaw-Min Lei
发明人： Tzu-Der Chuang , Ching-Yeh Chen , Yu-Wen Huang , Shan Liu , Zhi Zhou , Shaw-Min Lei
IPC分类号： H04N7/32 , H04N7/26
CPC分类号： H04N19/11 , H04N19/136 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/1887 , H04N19/44 , H04N19/463 , H04N19/593 , H04N19/70 , H04N19/91
摘要： Embodiments according to the present invention configure the intra prediction mode candidates into multi-level MPM sets, which comprise at least a first-level MPM set and a second-level MPM set. Encoding or decoding a current intra prediction mode is based on the multi-level MPM sets, where one syntax element of the syntax information to be generated or decoded respectively is associated with evaluating the current intra prediction mode using the first-level MPM set. A method and apparatus for spectively is associated with evaluating the current intra prediction mode using the first-level MPM set. A method and apparatus for chroma intra prediction mode encoding and decoding are also disclosed. The chroma intra prediction mode set includes a Luma-based chroma prediction Mode (LM), a Direct Mode (DM) and four other modes. The codeword set comprises variable-length codewords and fixed-length codewords, and the fixed-length codewords are longer than the variable-length codewords. The variable-length codewords are used for the DM and LM, and the fixed-length codewords are used for the four other modes.
摘要翻译：根据本发明的实施例将帧内预测模式候选配置为包括至少第一级MPM集合和第二级MPM集合的多级MPM集合。当前帧内预测模式的编码或解码是基于多级MPM集合，其中分别生成或解码的语法信息的一个语法元素与使用第一级MPM集合评估当前帧内预测模式相关联。用于分光学的方法和装置与使用第一级MPM集合评估当前帧内预测模式相关联。还公开了一种用于色度帧内预测模式编码和解码的方法和装置。色度帧内预测模式集包括基于亮度的色度预测模式（LM），直接模式（DM）和其它四种模式。码字组包括可变长度码字和固定长度码字，并且固定长度码字比可变长度码字长。可变长度码字用于DM和LM，固定长度码字用于其他四种模式。

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