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21. 发明授权

US09877019B2 Method of filter-unit based in-loop filtering 有权
公开(公告)号：US09877019B2
公开(公告)日：2018-01-23
申请号：US13825061
申请日：2011-12-31
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 , H04N19/117 , H04N19/70 , H04N19/46 , H04N19/82
CPC分类号： H04N19/103 , H04N19/117 , H04N19/46 , H04N19/70 , H04N19/82
摘要： Implementations of the invention are provided in methods for filter-unit based in-loop filtering in a video decoder and encoder. In one implementation, filter parameters are selected from a filter parameter set for each filter based on a filter index. In another implementation, the picture is partitioned into filter units according to filter unit size, which can be selected between a default size and other size. When other size is selected, the filter unit size may be conveyed using direct size information or ratio information. In another implementation, a merge flag and a merge index are used to convey filter unit merge information. A method for filter-unit based in-loop filtering in a video encoder for color video is disclosed. In one embodiment, the method incorporates filter syntax in the video bitstream by interleaving the color-component filter syntax for the FUs.

22. 发明授权

US09055305B2 Apparatus and method of sample adaptive offset for video coding 有权
标题翻译：用于视频编码的采样自适应偏移的装置和方法
公开(公告)号：US09055305B2
公开(公告)日：2015-06-09
申请号：US13158427
申请日：2011-06-12
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： H04N7/26 , H04N19/61 , H04N19/82 , H04N19/85
CPC分类号： H04N19/61 , H04N19/117 , H04N19/119 , H04N19/14 , H04N19/162 , H04N19/167 , H04N19/174 , H04N19/179 , H04N19/182 , H04N19/192 , H04N19/439 , H04N19/70 , H04N19/82 , H04N19/85 , H04N19/96
摘要： An apparatus and method for sample adaptive offset to restore intensity shift of processed video data are described. In a video coding system, the video data are subject to various processing such as prediction, transformation, quantization, deblocking, and adaptive loop filtering. Along the processing path in the video coding system, certain characteristics of the processed video data may be altered from the original video data due to the operations applied to video data. For example, the mean value of the processed video may be shifted. Therefore, the pixel intensity shift has to be carefully compensated or restored to alleviate the artifacts. Accordingly a sample adaptive offset scheme is disclosed that can take into consideration of the dynamic characteristics within a frame using a region partition scheme. Furthermore, the sample adaptive offset scheme also supports multiple SAO types that can be tailored to the characteristics of processed video data and achieve better quality.
摘要翻译：描述了用于恢复处理的视频数据的强度偏移的采样自适应偏移的装置和方法。在视频编码系统中，视频数据经历诸如预测，变换，量化，去块和自适应环路滤波的各种处理。沿着视频编码系统中的处理路径，由于应用于视频数据的操作，处理的视频数据的某些特性可能会从原始视频数据中改变。例如，处理的视频的平均值可能被移位。因此，必须仔细地补偿或恢复像素强度偏移以减轻伪影。因此，公开了可以使用区域分区方案考虑帧内的动态特性的样本自适应偏移方案。此外，样本自适应偏移方案还支持多种SAO类型，可以根据处理的视频数据的特性进行调整，并实现更好的质量。

23. 发明授权

US09008182B2 Motion prediction method and video encoding method 有权
标题翻译：运动预测方法和视频编码方法
公开(公告)号：US09008182B2
公开(公告)日：2015-04-14
申请号：US12962411
申请日：2010-12-07
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 , H04N19/56 , H04N19/513
CPC分类号： H04N19/56 , H04N19/172 , H04N19/513
摘要： The invention provides a motion prediction method. First, a plurality of motion vector predictors is obtained to be included in a candidate set for motion prediction of a current unit of a current frame. Whether the current frame is a non-reference frame which is not referred to by other frames for motion prediction is then determined. When the current frame is not the non-reference frame, any motion vector predictor corresponding to a previously coded frame is removed from the candidate set, and a motion vector of the current unit is predicted according to the motion vector predictors of the candidate set.
摘要翻译：本发明提供一种运动预测方法。首先，获得将多个运动矢量预测器包括在当前帧的当前单位的运动预测的候选集中。然后确定当前帧是否是用于运动预测的其他帧不参考的非参考帧。当当前帧不是非参考帧时，从候选组中去除对应于先前编码帧的任何运动矢量预测器，并且根据候选组的运动矢量预测器来预测当前单位的运动矢量。

24. 发明授权

US08711940B2 Method and apparatus of motion vector prediction with extended motion vector predictor 有权
标题翻译：运动矢量预测的方法和装置与扩展运动矢量预测器
公开(公告)号：US08711940B2
公开(公告)日：2014-04-29
申请号：US13089233
申请日：2011-04-18
申请人： Jian-Liang Lin , Yu-Pao Tsai , Yu-Wen Huang , Shaw-Min Lei
发明人： Jian-Liang Lin , Yu-Pao Tsai , Yu-Wen Huang , Shaw-Min Lei
IPC分类号： H04N11/02
CPC分类号： H04N19/61 , H04N19/517
摘要： A method and apparatus for determining a motion vector predictor (MVP) or a MVP candidate based on a MVP set are disclosed. In video coding systems, the spatial and temporal redundancy is exploited using spatial and temporal prediction to reduce the video data to be transmitted or stored. Motion vector prediction has been used to further conserve the bitrate associated with motion vector coding. Motion vector prediction technique being developed for the current high efficiency video coding (HEVC) only uses a MVP candidate set including spatial MVP candidates and a temporal candidate corresponding to the co-located block. In the current disclosure, the spatial and temporal motion vector predictor set is extended to include at least one spatially neighboring block associated with list 0 reference pictures and list 1 reference pictures, and co-located block and its neighboring block associated with list 0 reference pictures and list 1 reference pictures.
摘要翻译：公开了一种用于基于MVP集确定运动矢量预测器（MVP）或MVP候选的方法和装置。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或存储的视频数据。运动矢量预测已被用于进一步节省与运动矢量编码相关的比特率。针对当前的高效率视频编码（HEVC）开发的运动矢量预测技术仅使用包括空间MVP候选的MVP候选组和对应于同位置块的时间候选。在本公开中，空间和时间运动矢量预测器集合被扩展为包括与列表0参考图片和列表1参考图片相关联的至少一个空间上相邻的块，以及与列表0参考图片相关联的共址块及其相邻块并列出1个参考图片。

25. 发明授权

US08654860B2 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视频编码的装置和方法
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。

26. 发明授权

US08457430B2 Region-based method for iterative regularization image enhancement, and associated region-based apparatus and associated processing circuit 有权
标题翻译：用于迭代正则化图像增强的基于区域的方法，以及相关的基于区域的装置和相关处理电路
公开(公告)号：US08457430B2
公开(公告)日：2013-06-04
申请号：US12534154
申请日：2009-08-02
申请人： Yu-Pao Tsai , Yu-Wen Huang , Ying-Jui Chen , Shaw-Min Lei
发明人： Yu-Pao Tsai , Yu-Wen Huang , Ying-Jui Chen , Shaw-Min Lei
IPC分类号： G06K9/40
CPC分类号： G06T5/002 , G06T5/20 , G06T2207/20012
摘要： A region-based method for iterative regularization image enhancement, includes: for each region of a plurality of regions of an image, performing at least one gradient calculation of an objective function of a latest representative function of the region and updating the latest representative function according to the gradient calculation; and for the region of the plurality of regions of the image, when at least one predetermined convergence criterion is not satisfied, iteratively updating the latest representative function according to at least one gradient calculation of the same objective function of the latest representative function. In particular, the region-based method further includes: for the region of the plurality of regions of the image, when the predetermined convergence criterion is satisfied, performing postprocessing on the latest representative function of the region to generate an iteratively regularized partial image corresponding to the region. An associated region-based apparatus and processing circuit are further provided.
摘要翻译：一种用于迭代正则化图像增强的基于区域的方法包括：对于图像的多个区域中的每个区域，执行所述区域的最新代表性函数的目标函数的至少一个梯度计算，并且根据到梯度计算; 并且对于图像的多个区域的区域，当不满足至少一个预定收敛标准时，根据最新代表函数的相同目标函数的至少一个梯度计算迭代地更新最新代表函数。特别地，基于区域的方法还包括：对于图像的多个区域的区域，当满足预定的收敛标准时，对该区域的最新的代表性函数执行后处理，以生成对应于该区域。还提供了一种基于区域的设备和处理电路。

27. 发明申请

US20130128986A1 Method and Apparatus of Slice Boundary Padding for Loop Filtering 审中-公开
标题翻译：用于环路滤波的切片边界填充的方法和装置
公开(公告)号：US20130128986A1
公开(公告)日：2013-05-23
申请号：US13348488
申请日：2012-01-11
申请人： Chia-Yang Tsai , Yu-Wen Huang , Ching-Yeh Chen , Chih-Ming Fu , Chih-Wei Hsu , Shaw-Min Lei
发明人： Chia-Yang Tsai , 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： H04N19/167 , H04N19/117 , H04N19/174 , H04N19/182 , H04N19/61 , H04N19/82
摘要： A method and apparatus for video processing of reconstructed video in a reconstruction loop are disclosed. An embodiment according to the present invention performs padding for the blocks in the slice boundaries according to a processing order. Each of the one or more reconstructed blocks at slice boundaries is padded according to a padding order. In-loop filtering is applied to the reconstructed slice according to the processing order, wherein the reconstructed slice is filtered by referencing the one or more padded blocks. The padding order can be vertical-edge first and then horizontal-edge, or horizontal-edge first and then vertical-edge. Various embodiments are disclosed regarding whether padding for a later padded block in the processing order is skipped or not in the overlapped area. The present invention is also applied to adaptation blocks for block-based in-loop filtering in slice boundaries.
摘要翻译：公开了一种用于在重构环路中重构视频的视频处理的方法和装置。根据本发明的实施例根据处理顺序对切片边界中的块执行填充。根据填充顺序对切片边界处的一个或多个重构块中的每一个进行填充。根据处理顺序对重构片段进行环路滤波，其中通过参考一个或多个填充块来过滤重建片段。填充顺序可以先是垂直边缘，然后是水平边缘，或者先沿着水平边缘，然后是垂直边缘。公开了关于在重叠区域中是否跳过处理顺序中的稍后填充块的填充的各种实施例。本发明还应用于片边界中基于块的循环过滤的适配块。

28. 发明授权

US08325801B2 Adaptive restoration for video coding 有权
标题翻译：视频编码的自适应恢复
公开(公告)号：US08325801B2
公开(公告)日：2012-12-04
申请号：US12192147
申请日：2008-08-15
申请人： Shaw-Min Lei , Yu-Wen Huang
发明人： Shaw-Min Lei , Yu-Wen Huang
IPC分类号： H04N7/12
CPC分类号： H04N19/00139 , H04N19/117 , H04N19/136 , H04N19/147 , H04N19/172 , H04N19/46 , H04N19/61 , H04N19/82
摘要： A coding system includes an inter prediction block, a transform and quantization block, an encoding unit, and a reconstruction loop with an adaptive restoration block. The inter prediction block performs prediction on a current frame, the transform and quantization block performs transform and quantization processes on prediction residues, and the reconstruction loop reconstructs the current frame to generate the restored reconstructed samples. The adaptive restoration block performs restoration on processed data by considering a plurality of candidate restoration methods, selects one of the candidate restoration methods as a final restoration method, and generates adaptive restoration information corresponding to the final restoration method. The encoding unit encodes the prediction information and adaptive restoration information to generate an encoded bitstream.
摘要翻译：编码系统包括帧间预测块，变换和量化块，编码单元和具有自适应恢复块的重建循环。帧间预测块对当前帧执行预测，变换和量化块对预测残差执行变换和量化处理，并且重建循环重建当前帧以生成恢复的重建样本。自适应恢复块通过考虑多个候选恢复方法来执行对处理数据的恢复，选择候选恢复方法之一作为最终恢复方法，并且生成与最终恢复方法对应的自适应恢复信息。编码单元对预测信息和自适应恢复信息进行编码，以生成编码比特流。

29. 发明申请

US20120207227A1 Method and Apparatus for Slice Common Information Sharing 有权
标题翻译：切片常用信息共享的方法和装置
公开(公告)号：US20120207227A1
公开(公告)日：2012-08-16
申请号：US13298294
申请日：2011-11-17
申请人： Chia-Yang Tsai , Chih-Wei Hsu , Yu-Wen Huang , Ching-Yeh Chen , Chih-Ming Fu , Shaw-Min Lei
发明人： Chia-Yang Tsai , Chih-Wei Hsu , Yu-Wen Huang , Ching-Yeh Chen , Chih-Ming Fu , Shaw-Min Lei
IPC分类号： H04N7/26
CPC分类号： H04N19/117 , H04N19/136 , H04N19/172 , H04N19/174 , H04N19/70 , H04N19/82 , H04N19/86
摘要： A method and apparatus for sharing information in a video coding system are disclosed. Embodiments according to the present invention use an information sharing flag to determine whether to share in-loop filter information in the picture level. The information sharing flag may be incorporated in the sequence level, the picture level or the slice level to indicate whether information sharing is enabled. Multiple information sharing flags may also be used to adaptively control information sharing. Furthermore, method and apparatus of using multiple Adaptation Parameter Sets (APSs) for information sharing of in-loop filters are disclosed. APS identifiers of in-loop filters may be incorporated in the slice header to allow each of the in-loop filters select respective filter information from the multiple APSs. A flag is incorporated in SPS to indicate whether multiple APS or single APS is used. Various exemplary syntax designs are disclosed to illustrate information sharing.
摘要翻译：公开了一种用于在视频编码系统中共享信息的方法和装置。根据本发明的实施例使用信息共享标志来确定是否在图像级别中共享环路滤波器信息。信息共享标志可以并入在序列级别，画面级或片级中，以指示是否启用信息共享。也可以使用多个信息共享标志来自适应地控制信息共享。此外，公开了使用多个适配参数集（APS）进行环路滤波器信息共享的方法和装置。环路滤波器的APS标识符可以并入片标头中，以允许每个环路滤波器从多个APS中选择相应的滤波器信息。 SPS中包含一个标志，以指示是否使用多个APS或单个APS。公开各种示例性语法设计来说明信息共享。

30. 发明申请

US20120177107A1 Apparatus and Method of Sample Adaptive Offset for Video Coding 有权
标题翻译：用于视频编码的样本自适应偏移的装置和方法
公开(公告)号：US20120177107A1
公开(公告)日：2012-07-12
申请号：US13158427
申请日：2011-06-12
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： H04N7/26 , H04N7/40
CPC分类号： H04N19/61 , H04N19/117 , H04N19/119 , H04N19/14 , H04N19/162 , H04N19/167 , H04N19/174 , H04N19/179 , H04N19/182 , H04N19/192 , H04N19/439 , H04N19/70 , H04N19/82 , H04N19/85 , H04N19/96
摘要： An apparatus and method for sample adaptive offset to restore intensity shift of processed video data are described. In a video coding system, the video data are subject to various processing such as prediction, transformation, quantization, deblocking, and adaptive loop filtering. Along the processing path in the video coding system, certain characteristics of the processed video data may be altered from the original video data due to the operations applied to video data. For example, the mean value of the processed video may be shifted. Therefore, the pixel intensity shift has to be carefully compensated or restored to alleviate the artifacts. Accordingly a sample adaptive offset scheme is disclosed that can take into consideration of the dynamic characteristics within a frame using a region partition scheme. Furthermore, the sample adaptive offset scheme also supports multiple SAO types that can be tailored to the characteristics of processed video data and achieve better quality.
摘要翻译：描述了用于恢复处理的视频数据的强度偏移的采样自适应偏移的装置和方法。在视频编码系统中，视频数据经历诸如预测，变换，量化，去块和自适应环路滤波的各种处理。沿着视频编码系统中的处理路径，由于应用于视频数据的操作，处理的视频数据的某些特性可能会从原始视频数据中改变。例如，处理的视频的平均值可能被移位。因此，必须仔细地补偿或恢复像素强度偏移以减轻伪影。因此，公开了可以使用区域分区方案考虑帧内的动态特性的样本自适应偏移方案。此外，样本自适应偏移方案还支持多种SAO类型，可以根据处理的视频数据的特性进行调整，并实现更好的质量。

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