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121. 发明授权

US08437394B2 Adaptive filter 有权
标题翻译：自适应滤波器
公开(公告)号：US08437394B2
公开(公告)日：2013-05-07
申请号：US12405251
申请日：2009-03-17
申请人： Chih-Ming Fu , Xun Guo , Yu-Wen Huang , Shaw-Min Lei
发明人： Chih-Ming Fu , Xun Guo , Yu-Wen Huang , Shaw-Min Lei
IPC分类号： H04N7/12 , H04N7/26 , H04N7/36 , H04N11/02
CPC分类号： H04N19/523 , H04N19/117 , H04N19/142 , H04N19/147 , H04N19/176 , H04N19/19 , H04N19/433 , H04N19/436 , H04N19/46 , H04N19/82 , H04N19/86
摘要： A video encoder includes a prediction unit for performing prediction techniques according to original video data and reconstructed video data to generate prediction samples, a reconstruction unit for reconstructing the prediction samples to form the reconstructed video data, and a reference picture buffer for storing the reconstructed video data as reference video data. The video encoder also includes a filter parameter estimator for estimating filter parameters according to the original video data of a current picture and the reconstructed video data of the current picture, and an adaptive loop filter for filtering the reconstructed video data of the current picture according to stored filter parameters of a prior picture in coding order. The filter parameter estimator and adaptive loop filter can operate in parallel.
摘要翻译：视频编码器包括：预测单元，用于执行根据原始视频数据的预测技术和重建的视频数据以产生预测采样;重构单元，用于重建预测采样以形成重构的视频数据;以及参考图像缓冲器，用于存储重建的视频数据作为参考视频数据。视频编码器还包括滤波器参数估计器，用于根据当前图像的原始视频数据和当前图像的重建视频数据估计滤波器参数，以及自适应环路滤波器，用于根据当前图像的重构视频数据进行滤波以编码顺序存储先验图像的滤波器参数。滤波器参数估计器和自适应环路滤波器可以并联运行。

122. 发明申请

US20130064472A1 Method and Apparatus of High-Resolution Image Reconstruction Based on Multi-Frame Low-Resolution Images 有权
标题翻译：基于多帧低分辨率图像的高分辨率图像重建方法与装置
公开(公告)号：US20130064472A1
公开(公告)日：2013-03-14
申请号：US13476208
申请日：2012-05-21
申请人： Xinfeng Zhang , Si-Wei Ma , Xun Guo , Shaw-Min Lei
发明人： Xinfeng Zhang , Si-Wei Ma , Xun Guo , Shaw-Min Lei
IPC分类号： G06K9/32
CPC分类号： G06T3/4053
摘要： A method and apparatus for reconstructing a high-resolution image based on multiple low-resolution images are disclosed. The method and apparatus incorporating an embodiment according to the present invention reconstructs the high-resolution image based on a kernel regression method using a modified kernel function. The kernel function takes into consideration of registration reliability of regression residue and rotational motion within the multiple low-resolution images. The registration reliability adjusts weighting on the regression residues according to local gradient estimated between neighboring values. Furthermore, multi-scale regression residue is used to alleviate impact of noise.
摘要翻译：公开了一种基于多个低分辨率图像重建高分辨率图像的方法和装置。结合根据本发明的实施例的方法和装置基于使用修改的内核功能的内核回归方法来重构高分辨率图像。核函数考虑了多个低分辨率图像内的回归残差和旋转运动的配准可靠性。注册可靠性根据相邻值之间估计的局部梯度来调整回归残差的权重。此外，多尺度回归残差用于减轻噪声的影响。

123. 发明申请

US20130003843A1 Motion Prediction Method 审中-公开
标题翻译：运动预测方法
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。

124. 发明申请

US20120294353A1 Apparatus and Method of Sample Adaptive Offset for Luma and Chroma Components 审中-公开
标题翻译：用于亮度和色度分量的样本自适应偏移的装置和方法
公开(公告)号：US20120294353A1
公开(公告)日：2012-11-22
申请号：US13311953
申请日：2011-12-06
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： H04N7/12
CPC分类号： H04N19/82 , H04N19/117 , H04N19/132 , H04N19/157 , H04N19/176 , H04N19/186 , H04N19/196 , H04N19/463 , H04N19/70 , H04N19/96
摘要： A method and apparatus for processing reconstructed video using in-loop filter in a video coding system are disclosed. The method uses chroma in-loop filter indication to indicate whether chroma components are processed by in-loop filter when the luma in-loop filter indication indicates that in-loop filter processing is applied to the luma component. An additional flag may be used to indicate whether the in-loop filter processing is applied to an entire picture using same in-loop filter information or each block of the picture using individual in-loop filter information. Various embodiments according to the present invention to increase efficiency are disclosed, wherein various aspects of in-loop filter information are taken into consideration for efficient coding such as the property of quadtree-based partition, boundary conditions of a block, in-loop filter information sharing between luma and chroma components, indexing to a set of in-loop filter information, and prediction of in-loop filter information.
摘要翻译：公开了一种使用视频编码系统中的环路滤波器处理重构视频的方法和装置。该方法使用色度环路滤波器指示来指示当亮度环路滤波器指示表明将环路滤波处理应用于亮度分量时，是否通过环路滤波器处理色度分量。可以使用附加标志来指示使用相同的环路滤波器信息或使用各个循环过滤器信息的图像的每个块来将整个图像应用于环路滤波处理。公开了根据本发明的用于提高效率的各种实施例，其中考虑到环路滤波器信息的各个方面以进行有效的编码，例如基于四叉树的分区的属性，块的边界条件，环路滤波器信息在亮度和色度分量之间共享，索引到一组环路滤波器信息，以及对环路滤波器信息的预测。

125. 发明申请

US20120128060A1 Method and Apparatus of Spatial Motion Vector Prediction 有权
标题翻译：空间运动矢量预测的方法与装置
公开(公告)号：US20120128060A1
公开(公告)日：2012-05-24
申请号：US13047600
申请日：2011-03-14
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： H04N7/26 , H04N7/32
CPC分类号： H04N19/00696 , H04N19/573 , H04N19/577
摘要： An apparatus and method for deriving a motion vector predictor or a motion vector predictor candidate or a motion vector or a motion vector candidate for a current block 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 or stored. Motion Vector Prediction (MVP) has been used to further conserve the bitrate associated with motion vector coding. The MVP technique being developed for the current HEVC only considers the motion vector having the same reference list and the same reference picture index as the current block to be an available spatial motion vector predictor candidate. It is desirable to develop a MVP scheme that can improve the availability of the motion vector predictor candidate based on motion vectors from the spatially neighboring block. Accordingly, an apparatus and method for determining a motion vector predictor or motion vector predictor candidate or motion vector or motion vector candidate for a current block based on motion vectors associated with reference pictures in list 0 and list 1 of a neighboring block are disclosed. The improved MVP scheme may reduce motion vector residues and consequently the coding efficiency can be improved. Furthermore, the MVP scheme is based on a priority order so that the predictor can be derived at the decoder using decoded information without side information.
摘要翻译：公开了一种用于导出运动矢量预测器或运动矢量预测器候选或用于当前块的运动矢量或运动矢量候选的装置和方法。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或存储的信息。运动矢量预测（MVP）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HEVC开发的MVP技术仅考虑具有与当前块相同的参考列表和相同参考图像索引的运动矢量作为可用的空间运动矢量预测器候选。期望开发可以基于来自空间相邻块的运动矢量来提高运动矢量预测器候选的可用性的MVP方案。因此，公开了一种用于基于与相邻块的列表0和列表1中的参考图片相关联的运动矢量来确定当前块的运动矢量预测器或运动矢量预测器候选或运动矢量或运动矢量候选的装置和方法。改进的MVP方案可以减少运动矢量残差，从而可以提高编码效率。此外，MVP方案基于优先级顺序，使得可以在解码器处使用没有副信息的解码信息来导出预测器。

126. 发明申请

US20120106622A1 Method and Apparatus of Slice Grouping for High Efficiency Video Coding 审中-公开
标题翻译：用于高效率视频编码的片段分组方法和装置
公开(公告)号：US20120106622A1
公开(公告)日：2012-05-03
申请号：US12984727
申请日：2011-01-05
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： H04N19/426 , H04N19/129 , H04N19/14 , H04N19/174
摘要： In the H.264/AVC standard, one of the new characteristics is the possibility of dividing an image in regions called slice groups. The use of slice groups provides various possible advantages such as prioritized transmission, error resilient transmission, and etc. The slice groups can be formed by flexible macroblock ordering (FMO), where each picture can be divided into slice groups in different scan patterns of the macroblocks. In the high efficiency video coding (HEVC) under development, a more flexible block structure, called coding unit (CU), is used as the unit to process video data. The picture is first divided into largest CUs (LCUs) and each LCU is adaptively split into smaller CUs using a quadtree until leaf CUs are reached. In the current HEVC development, there is neither slice nor slice group structure being considered. The LCU size used for HEVC is 16 times as large as the macroblock size used in the H.264/AVC standard. Therefore, it is very desirable to develop slice and slice group structure suited for HEVC to offer various benefits of error resilience, parallel processing, reduced line (row) buffer requirement, and etc. Accordingly, slice group types including raster scan type, vertical stripe type, regions of interest type and full flexibility type are developed for HEVC. Furthermore, various syntax elements are incorporated in the sequence header or the picture header to convey information associated with the slice group structure.
摘要翻译：在H.264 / AVC标准中，新特性之一是在称为片组的区域中划分图像的可能性。切片组的使用提供了各种可能的优点，例如优先传输，错误弹性传输等。切片组可以通过灵活的宏块排序（FMO）形成，其中每个图像可以被分成不同扫描模式的切片组宏块。在正在开发的高效率视频编码（HEVC）中，使用称为编码单元（CU）的更灵活的块结构作为处理视频数据的单元。该图片首先划分为最大的CU（LCU），并且使用四叉树将每个LCU自适应地分割成较小的CU，直到达到叶CU。在目前的HEVC开发中，既没有考虑切片也没有切片组结构。用于HEVC的LCU大小是H.264 / AVC标准中使用的宏块尺寸的16倍。因此，非常希望开发适用于HEVC的切片和切片组结构，以提供错误恢复，并行处理，减少线（行）缓冲器要求等各种优点。因此，包括光栅扫描类型，垂直条纹类型，兴趣类型和全柔性类型为HEVC开发。此外，各种语法元素被并入到序列头或图像头中以传送与切片组结构相关联的信息。

127. 发明申请

US20120082244A1 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：US20120082244A1
公开(公告)日：2012-04-05
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
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。

128. 发明申请

US20120063514A1 METHOD FOR PERFORMING HYBRID MULTIHYPOTHESIS PREDICTION DURING VIDEO CODING OF A CODING UNIT, AND ASSOCIATED APPARATUS 有权
标题翻译：在编码单元的视频编码期间执行混合多媒体预测的方法及相关设备
公开(公告)号：US20120063514A1
公开(公告)日：2012-03-15
申请号：US13048893
申请日：2011-03-16
申请人： Jian-Liang Lin , Yu-Pao Tsai , Shaw-Min Lei
发明人： Jian-Liang Lin , Yu-Pao Tsai , Shaw-Min Lei
IPC分类号： H04N7/32
CPC分类号： H04N19/00715 , H04N19/54 , H04N19/547 , H04N19/56 , H04N19/573 , H04N19/58 , H04N19/70
摘要： A method for performing hybrid multihypothesis prediction during video coding of a coding unit includes: processing a plurality of sub-coding units in the coding unit; and performing motion vector derivation of a portion of the sub-coding units. More particularly, the step of performing motion vector derivation of the portion of the sub-coding units further includes: deriving a plurality of motion vectors for multihypothesis motion-compensated prediction of a specific sub-coding unit of the portion of the sub-coding units from at least one other sub-coding/coding unit or by performing motion estimation. The method further includes performing multihypothesis motion-compensated prediction on the specific sub-coding unit according to the plurality of motion vectors, and more particularly, includes utilizing a linear combination of a plurality of pixel values derived from the plurality of motion vectors as a predicted pixel value of the specific sub-coding unit. An associated apparatus is also provided.
摘要翻译：一种用于在编码单元的视频编码期间执行混合多重假设预测的方法包括：在编码单元中处理多个子编码单元; 以及执行子编码单元的一部分的运动矢量导出。更具体地，执行子编码单元的部分的运动矢量导出的步骤还包括：导出用于子编码单元的一部分的特定子编码单元的多假设运动补偿预测的多个运动矢量从至少一个其他子编码/编码单元或通过执行运动估计。该方法还包括根据多个运动矢量对特定子编码单元执行多重假设运动补偿预测，更具体地，包括利用从多个运动矢量导出的多个像素值的线性组合作为预测特定子编码单元的像素值。还提供了一种相关联的装置。

129. 发明申请

US20110255600A1 METHOD FOR PERFORMING LOCALIZED MULTIHYPOTHESIS PREDICTION DURING VIDEO CODING OF A CODING UNIT, AND ASSOCIATED APPARATUS 有权
标题翻译：在编码单元的视频编码期间执行本地化多媒体预测的方法及相关设备
公开(公告)号：US20110255600A1
公开(公告)日：2011-10-20
申请号：US13080668
申请日：2011-04-06
申请人： Jian-Liang Lin , Yu-Pao Tsai , Shaw-Min Lei
发明人： Jian-Liang Lin , Yu-Pao Tsai , Shaw-Min Lei
IPC分类号： H04N7/12
CPC分类号： H04N19/139 , H04N19/513 , H04N19/52 , H04N19/56
摘要： A method for performing localized multihypothesis prediction during video coding of a coding unit includes: dividing the coding unit into a plurality of sub-coding units; and performing motion vector prediction of each of the sub-coding units. More particularly, the step of performing motion vector prediction of each of the sub-coding units further includes: obtaining a plurality of motion vectors for multihypothesis motion compensation of a specific sub-coding unit of the sub-coding units from a plurality of other sub-coding/coding units. The method further includes performing multihypothesis motion compensation on the specific sub-coding unit according to the plurality of motion vectors, and more particularly, includes utilizing a linear combination of a plurality of pixel values of the plurality of other sub-coding/coding units as a predicted pixel value of the specific sub-coding unit. An associated apparatus is also provided.
摘要翻译：一种用于在编码单元的视频编码期间执行局部多重假设预测的方法包括：将编码单元划分为多个子编码单元; 以及对每个子编码单元进行运动矢量预测。更具体地，执行每个子编码单元的运动矢量预测的步骤还包括：从多个其他子级获得多个子编码单元的特定子编码单元的多假设运动补偿的运动矢量编码/编码单元。该方法还包括根据多个运动矢量对特定子编码单元执行多重假设运动补偿，更具体地，包括利用多个其他子编码/编码单元的多个像素值的线性组合作为特定子编码单元的预测像素值。还提供了一种相关联的装置。

130. 发明申请

US20110235712A1 LOW COMPLEXITY VIDEO DECODER 有权
标题翻译：低复杂视频解码器
公开(公告)号：US20110235712A1
公开(公告)日：2011-09-29
申请号：US12732177
申请日：2010-03-25
申请人： Jian-Liang Lin , Fang-Yi Hsieh , Shen-Kai Chang , Shaw-Min Lei
发明人： Jian-Liang Lin , Fang-Yi Hsieh , Shen-Kai Chang , Shaw-Min Lei
IPC分类号： H04N7/32
CPC分类号： H04N21/234363 , H04N19/13 , H04N19/132 , H04N19/156 , H04N19/44 , H04N19/48 , H04N19/59 , H04N19/61 , H04N21/43637
摘要： A low complexity video decoder includes: a fast variable length decoding (VLD) and inverse quantization module arranged to perform fast VLD and inverse quantization on an input bit stream to generate inverse quantization results; an inverse transform unit arranged to perform inverse transform on the inverse quantization results to generate inverse transform results; a motion compensation module arranged to perform motion compensation according to the input bit stream and generate associated prediction outputs, wherein the motion compensation module includes a temporal/spatial prediction unit arranged to perform temporal/spatial prediction to generate at least a portion of the prediction outputs; an arithmetic unit arranged to sum up the inverse transform results and the prediction outputs to generate compensated outputs; a reconstructed frame output unit arranged to generate reconstructed frames according to the compensated outputs; and a frame storage arranged to store some reconstructed frames.
摘要翻译：低复杂度视频解码器包括：快速可变长度解码（VLD）和反量化模块，被布置为对输入比特流执行快速VLD和反量化以产生反量化结果; 反变换单元，被配置为对所述逆量化结果执行逆变换以产生逆变换结果; 运动补偿模块，被布置成根据输入比特流执行运动补偿并产生相关联的预测输出，其中运动补偿模块包括时间/空间预测单元，其被配置为执行时间/空间预测以产生预测输出的至少一部分 ; 算术单元，被配置为将逆变换结果和预测输出相加，以产生补偿输出; 重建帧输出单元，被布置为根据补偿的输出产生重构帧; 以及帧存储器，被布置为存储一些重建的帧。

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