公开(公告)号：US08548041B2

公开(公告)日：2013-10-01

申请号：US12405216

申请日：2009-03-16

申请人： Chih-Ming Fu ,  Yu-Wen Huang ,  Shaw-Min Lei ,  Xun Guo

发明人： Chih-Ming Fu ,  Yu-Wen Huang ,  Shaw-Min Lei ,  Xun Guo

IPC分类号： H04N7/12 ,  H04N7/32 ,  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 that utilizes adaptive loop filtering for coding video data includes: a prediction unit, for performing prediction techniques according to original video data and reconstructed video data to generate predicted samples; a reconstruction unit, for reconstructing the predicted samples to form the reconstructed video data; a reference picture buffer, for storing the reconstructed video data; a filter parameter estimator, for estimating filter parameters according to the original video data and the reconstructed video data; and an adaptive filter, for utilizing the stored filter parameters to perform filtering on the reconstructed video data.

摘要翻译： 利用自适应环路滤波对视频数据进行编码的视频编码器包括：预测单元，用于根据原始视频数据和重建的视频数据执行预测技术以产生预测样本; 重建单元，用于重构所述预测样本以形成重建的视频数据; 用于存储重构的视频数据的参考图像缓冲器; 滤波器参数估计器，用于根据原始视频数据和重建的视频数据估计滤波器参数; 以及自适应滤波器，用于利用所存储的滤波器参数对重构的视频数据执行滤波。

公开(公告)号：US20100074329A1

公开(公告)日：2010-03-25

申请号：US12405250

申请日：2009-03-17

申请人： Chih-Ming Fu ,  Xun Guo ,  Kai Zhang ,  Yu-Wen Huang ,  Shaw-Min Lei

发明人： Chih-Ming Fu ,  Xun Guo ,  Kai Zhang ,  Yu-Wen Huang ,  Shaw-Min Lei

IPC分类号： H04N7/12

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 that utilizes adaptive interpolation filtering for coding video data includes a prediction unit, a reconstruction unit, a reference picture buffer, a filter parameter estimator for estimating filter parameters according to the original video data and the predicted samples, and an adaptive interpolation filter for utilizing the stored filter parameters to perform filtering on the reconstructed video data.

摘要翻译： 利用针对视频数据进行编码的自适应插值滤波的视频编码器包括预测单元，重建单元，参考图像缓冲器，用于根据原始视频数据和预测样本估计滤波器参数的滤波器参数估计器，以及自适应插值滤波器 用于利用所存储的滤波器参数对重建的视频数据执行滤波。

公开(公告)号：US20140086502A1

公开(公告)日：2014-03-27

申请号：US14123094

申请日：2012-06-15

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

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

IPC分类号： H04N7/26

CPC分类号： H04N19/105 ,  H04N19/136 ,  H04N19/182 ,  H04N19/186 ,  H04N19/433 ,  H04N19/593 ,  H04N19/96

摘要： A method and apparatus for chroma intra prediction for a current chroma block with reduced line memory requirement are disclosed. The chroma intra predictor is derived from reconstructed luma pixels of a current luma block using a model with parameters. In various embodiments according to the present invention, the derivation of the parameters relies on a reconstructed luma pixel set corresponding to neighboring reconstructed luma pixels from causal luma neighboring areas of the current luma block, wherein said causal luma neighboring areas include a first area corresponding to reconstructed luma pixels above a horizontal luma block boundary on a top side of the current luma block, and wherein the reconstructed luma pixels from the first area that are included in the reconstructed luma pixel set are from a luma pixel line immediately above the horizontal luma block boundary.

摘要翻译： 公开了一种具有减少的行存储器要求的当前色度块的色度帧内预测的方法和装置。 色度内预测器是使用具有参数的模型从当前亮度块的重建亮度像素导出的。 在根据本发明的各种实施例中，参数的推导依赖于对应于来自当前亮度块的因果亮度相邻区域的相邻重建亮度像素的重构亮度像素集，其中所述因果亮度相邻区域包括对应于 在当前亮度块的顶侧上的水平亮度块边界上方的重建亮度像素，并且其中包括在重建亮度像素组中的来自第一区域的重建亮度像素来自水平亮度块正上方的亮度像素线 边界。

公开(公告)号：US20120177113A1

公开(公告)日：2012-07-12

申请号：US13198697

申请日：2011-08-04

申请人： Mei Guo ,  Xun Guo ,  Shaw-Min Lei

发明人： Mei Guo ,  Xun Guo ,  Shaw-Min Lei

IPC分类号： H04N7/32

CPC分类号： H04N19/593 ,  H04N19/11 ,  H04N19/159 ,  H04N19/196 ,  H04N19/463

摘要： A method and apparatus for improved intra prediction mode coding are disclosed. Intra prediction exploits the spatial correlation within a picture or within a picture region. In practice, a picture is divided into blocks and the intra mode prediction is performed on a block basis. In newer coding systems, multiple intra prediction modes such as Vertical mode, Horizontal mode, DC mode and Diagonal mode, have been used to improve the coding efficiency of intra coding. However, the mode selection information for intra prediction has to be conveyed to the decoder for proper operation. In High-Efficiency Video Coding (HEVC), a coding scheme for the intra luma prediction mode is being considered, where the intra prediction mode of a current block is compared with the minimum of two intra luma prediction modes corresponding to two neighboring blocks. If the intra prediction mode of the current block is the same as the minimum of the two neighboring intra luma prediction modes, a single bit is transmitted to indicate the case. Otherwise, information for the current intra prediction mode is transmitted in fixed-length codeword. While the coding scheme for the intra luma prediction mode being considered may not fully exploit the neighboring intra luma prediction modes, it is desirable to further improve the performance. Accordingly, an improved coding scheme for intra prediction mode is disclosed, where more than one intra prediction mode candidates are derived.

摘要翻译： 公开了一种用于改进帧内预测模式编码的方法和装置。 帧内预测利用图片内或图片区域内的空间相关性。 实际上，将图像划分成块，并且以块为基础执行帧内模式预测。 在较新的编码系统中，已经使用诸如垂直模式，水平模式，直流模式和对角线模式的多个帧内预测模式来提高帧内编码的编码效率。 然而，用于帧内预测的模式选择信息必须被传送到解码器以进行正确的操作。 在高效率视频编码（HEVC）中，正在考虑用于内部亮度预测模式的编码方案，其中将当前块的帧内预测模式与对应于两个相邻块的两个内部亮度预测模式的最小值进行比较。 如果当前块的帧内预测模式与两个相邻帧内亮度预测模式的最小值相同，则发送单个位以指示该情况。 否则，以固定长度的码字发送当前帧内预测模式的信息。 虽然正在考虑的内部亮度预测模式的编码方案可能不能充分利用相邻的内部亮度预测模式，但是期望进一步提高性能。 因此，公开了一种用于帧内预测模式的改进编码方案，其中导出多于一个帧内预测模式候选。

公开(公告)号：US20100074323A1

公开(公告)日：2010-03-25

申请号：US12405216

申请日：2009-03-16

申请人： Chih-Ming Fu ,  Yu-Wen Huang ,  Shaw-Min Lei ,  Xun Guo

发明人： Chih-Ming Fu ,  Yu-Wen Huang ,  Shaw-Min Lei ,  Xun Guo

IPC分类号： H04N7/12

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 that utilizes adaptive loop filtering for coding video data includes: a prediction unit, for performing prediction techniques according to original video data and reconstructed video data to generate predicted samples; a reconstruction unit, for reconstructing the predicted samples to form the reconstructed video data; a reference picture buffer, for storing the reconstructed video data; a filter parameter estimator, for estimating filter parameters according to the original video data and the reconstructed video data; and an adaptive filter, for utilizing the stored filter parameters to perform filtering on the reconstructed video data.

摘要翻译： 利用自适应环路滤波对视频数据进行编码的视频编码器包括：预测单元，用于根据原始视频数据和重建的视频数据执行预测技术以产生预测样本; 重建单元，用于重构所述预测样本以形成重建的视频数据; 用于存储重构的视频数据的参考图像缓冲器; 滤波器参数估计器，用于根据原始视频数据和重建的视频数据估计滤波器参数; 以及自适应滤波器，用于利用所存储的滤波器参数对重构的视频数据执行滤波。

公开(公告)号：US20090154567A1

公开(公告)日：2009-06-18

申请号：US12203933

申请日：2008-09-04

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

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

IPC分类号： H04N7/26

CPC分类号： H04N19/82 ,  H04N19/46 ,  H04N19/61 ,  H04N19/86 ,  H04N19/865 ,  H04N19/91 ,  H04N19/96

摘要： An encoder for receiving a video frame and performing encoding processes to generate an encoded bitstream includes: a fidelity enhancement block, for performing a fidelity enhancement technique on the video frame utilizing a quad-tree partition, and generating fidelity enhancement information including a parameter associated with the quad-tree partition structure; and an entropy coding block, coupled to the fidelity enhancement block, for encoding the fidelity enhancement information, and embedding the encoded fidelity enhancement information into the encoded bitstream.

摘要翻译： 一种用于接收视频帧并执行编码处理以生成编码比特流的编码器包括：保真度增强块，用于使用四叉树分区在视频帧上执行保真度增强技术，以及生成保真度增强信息，其包括与 四叉树分割结构; 以及耦合到保真度增强块的熵编码块，用于对保真度增强信息进行编码，以及将编码的保真度增强信息嵌入到编码比特流中。

公开(公告)号：US10306222B2

公开(公告)日：2019-05-28

申请号：US14123095

申请日：2012-06-20

申请人： Mei Guo ,  Xin Zhao ,  Xun Guo ,  Shaw-Min Lei

发明人： Mei Guo ,  Xin Zhao ,  Xun Guo ,  Shaw-Min Lei

IPC分类号： H04N7/36 ,  H04N7/34 ,  H04N19/105 ,  H04N19/593 ,  H04N19/14 ,  H04N19/182 ,  H04N19/157 ,  H04N19/176

摘要： A method and apparatus for intra prediction for a current block using directional intra prediction based on neighboring pixels around the current block are disclosed. Embodiment according to the present invention derives the gradient for the current pixel from the neighboring reconstructed pixels along a prediction direction of directional intra prediction. The gradient derived is used to form the final intra prediction. In another embodiment of the present invention, the intra prediction for slant vertical and horizontal directions is derived based on the neighboring reconstructed pixels in a neighboring row adjacent to the top side of the current block and the neighboring reconstructed pixels in a neighboring column adjacent to the left side of the current block.

公开(公告)号：US08755435B2

公开(公告)日：2014-06-17

申请号：US13171858

申请日：2011-06-29

申请人： Mei Guo ,  Xun Guo ,  Shaw-Min Lei

发明人： Mei Guo ,  Xun Guo ,  Shaw-Min Lei

IPC分类号： H04N7/12

CPC分类号： H04N19/182 ,  H04N19/11 ,  H04N19/13 ,  H04N19/186

摘要： A method and apparatus for improved intra chroma prediction mode coding are disclosed. Intra prediction exploits the spatial correlation within a picture or within a picture region. In practice, a picture is divided into blocks and the intra mode prediction is performed on a block basis. In newer coding systems, multiple intra coding modes such as Vertical mode, Horizontal mode, DC mode and Diagonal mode, have been used to improve the coding efficiency of intra coding. Furthermore, a Luma_mode has also been used in intra prediction of chroma component to further improve the performance in the High Efficiency Video Coding (HEVC) standard being developed. However, the mode selection information for intra prediction has to be conveyed to the decoder for proper operation. Spatial features in a picture often exist in both luma and chroma components. The intra luma prediction mode and intra chroma prediction mode will have high probability to be the same. Accordingly, an embodiment according to the present invention adaptively assigns variable length codes to a set of mode symbols associated with intra chroma prediction by assigning a shortest code to the Luma_mode. Luma_mode not only can be the best luma mode of the corresponding luma block but also can be selected from several corresponding luma modes. The maximum length of chroma prediction codes is decreased by one bit when Luma_mode is equal to one of frequent modes. The coding efficiency of arithmetic coding of chroma prediction codes is further improved by selecting the context upon neighboring blocks.

摘要翻译： 公开了一种用于改进的帧内色度预测模式编码的方法和装置。 帧内预测利用图片内或图片区域内的空间相关性。 实际上，将图像划分成块，并且以块为基础执行帧内模式预测。 在较新的编码系统中，已经使用诸如垂直模式，水平模式，直流模式和对角线模式的多个帧内编码模式来提高帧内编码的编码效率。 此外，Luma_mode也被用于色度分量的帧内预测，​​以进一步提高正在开发的高效率视频编码（HEVC）标准中的性能。 然而，用于帧内预测的模式选择信息必须被传送到解码器以进行正确的操作。 图片中的空间特征通常存在于亮度和色度分量中。 内部亮度预测模式和内部色度预测模式将具有相同的概率。 因此，根据本发明的实施例通过向Luma_mode分配最短代码来自适应地将可变长度代码分配给与帧内色度预测相关联的一组模式符号。 Luma_mode不仅可以是对应亮度块的最佳亮度模式，还可以从几个相应的亮度模式中选择。 当Luma_mode等于频繁模式之一时，色度预测码的最大长度减少一位。 通过选择相邻块的上下文，进一步提高色度预测码的算术编码的编码效率。

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。

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。