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公开(公告)号：WO2013067949A1
公开(公告)日：2013-05-16
申请号：PCT/CN2012/084307
申请日：2012-11-08
IPC: H04N7/26
CPC classification number: H04N19/126 , H04N19/132 , H04N19/167 , H04N19/184 , H04N19/30 , H04N19/463 , H04N19/593 , H04N19/70 , H04N19/91 , H04N19/93
Abstract: 本发明提供一种矩阵编码方法及装置与解码方法及装置。其中，一种编码方法包括：按照预设划分层数将矩阵进行分层，并将矩阵元素分组到不同分层中；根据确定的待编码层数，按照层次顺序依次对待编码的每层中的矩阵元素进行编码处理；对于层数小于或等于待编码层数的层，将该层对应的原始矩阵元素值和对应的矩阵元素预测值的残差数据作写入码流；对于层数大于待编码层数的层，在码流中不写入该层的编码数据；将待编码层数进行编码，并写入码流。本发明技术方案提高了对矩阵的压缩比，减少了传输矩阵所占用的码率。
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公开(公告)号：WO2008083599A1
公开(公告)日：2008-07-17
申请号：PCT/CN2007/071376
申请日：2007-12-28
CPC classification number: H04N19/58 , H04N19/43 , H04N19/51 , H04N19/597
Abstract: A multi-view video encoding and decoding method and apparatus are provided. The method comprises: firstly, determining a reference distance between each candidate reference image and a current image according to the time distance and the spatial distance between the candidate reference image and the current image; selecting and determining at least one frame reference image used by the current image according to the reference distance for each candidate reference image, and encoding and decoding the current image with the reference image. Therefore, a preferred prediction effect can be obtained by using the image in a current reference cachewithout using an additional reference cache. The enhanced multi-view video encoding and decoding efficiency can be achieved.
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公开(公告)号：WO2012167670A1
公开(公告)日：2012-12-13
申请号：PCT/CN2012/074194
申请日：2012-04-17
IPC: H04N7/50
CPC classification number: H04N19/119 , H04N19/122 , H04N19/176 , H04N19/60 , H04N19/61 , H04N19/96
Abstract: 本发明实施例提供一种确定变换块尺寸的方法和设备，能够提高图像压缩效率。该方法包括：根据图像块信息和图像块的划分方式，获得图像块对应的变换块的参数；根据变换块的参数和图像块的划分方式，获得变换块尺寸。本发明实施例在确定变换块尺寸时，根据图像块对应的变换块的参数和图像块的划分方式，获得变换块尺寸，因此能够采用适应图像块的划分方式的变换块，提高了图像压缩效率。
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公开(公告)号：WO2009149671A1
公开(公告)日：2009-12-17
申请号：PCT/CN2009/072250
申请日：2009-06-12
IPC: H04N7/24
CPC classification number: H04N21/4382 , H04N21/234327 , H04N21/2383
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Patent Agency Ranking
公开(公告)号：WO2009033432A1
公开(公告)日：2009-03-19
申请号：PCT/CN2008/072362
申请日：2008-09-12
CPC classification number: H04N19/174 , H04N19/129 , H04N19/14 , H04N19/196 , H04N19/46
Abstract: A method and an equipment used for encoding and decoding video are provided. The detail of the them is: At the encoder side, an image is divided into some slices. Each slice includes consecutive macro blocks in designated scanning order in the image. Then the slices included in the image are divided into one or many slice sets according to the attribute information of each slice. Based on the division information of the slices and the slice sets, the encoding operation to the slices in the slice sets is carried on and code stream corresponding to the image is produced. At the decoder side, division information of the slices and slice sets iscaptured from the code stream to be decoded. The operation of decoding is processed according to the division information. The method and the equipment have application to encoding based on areas, and can improve efficiently transmission capability and reduce complexity of encoding and decoding system as a result of easily realizing process.
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公开(公告)号：WO2008025300A1
公开(公告)日：2008-03-06
申请号：PCT/CN2007/070608
申请日：2007-08-31
CPC classification number: H04N19/517 , H04N19/13 , H04N19/176 , H04N19/194 , H04N19/51 , H04N19/61
Abstract: A method for image/video encoding. It comprises following steps: making motion-compensated prediction for present image to get the first residual images and the first motion vectors. Then making the second motion-compensated prediction for the first residual images to get the second residual images and the second motion vectors. Encoding the second residual images and the second motion vectors and the first motion vectors into bit stream, or after the entropy coding, then encoding them into bit stream. Furthermore, the corresponding apparatus for image/video encoding and/or decoding are disclosed. The solution can get rid of the relativity among the residua! images.
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公开(公告)号：WO2007110000A1
公开(公告)日：2007-10-04
申请号：PCT/CN2007/001030
申请日：2007-03-29
IPC: H04N13/02
CPC classification number: H04N19/597
Abstract: A method of obtaining disparity vector, and its encoding-decoding in the multi-view encoding process. The method mainly includes: by determining the disparity vector between two views in the multi-view encoding process, and based on this disparity vector between the two views and the known relative location of each of the view, the disparity vector between another two views is calculated and obtained. Thereafter, the multi-view encoding-decoding is operated using the above-mentioned disparity vector. The method in this invention well utilizes the relativity between the disparity vector and the information of the space object depth on the one hand, and makes very good use of the direct relation between the disparity vector and the position of each of the cameras on the other. The experiment proved that the disparity vector between each of the views can be precisely calculated in the multi-view encoding process, so that the multi-view encoding functionality can be effectively enhanced.
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公开(公告)号：WO2014005500A1
公开(公告)日：2014-01-09
申请号：PCT/CN2013/078613
申请日：2013-07-01
CPC classification number: H04N19/60 , H04N19/119
Abstract: 本发明提供一种变换块划分方法，变换块的划分参数编码方法和解码方法。变换块划分方法包括：获取预设变换块的尺寸的最小值；对变换块的进行非方形划分时，若所述变换块的宽或高等于所述预设变换块的尺寸的最小值，则停止对所述变换块进行划分。本发明实施例在对变换块进行非方形划分时，在变换块的宽或高其中之一等于预设变换块的尺寸最小值时，停止划分。
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