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公开(公告)号：US20130195181A1
公开(公告)日：2013-08-01
申请号：US13575105
申请日：2011-01-19
IPC分类号： H04N7/26
CPC分类号： H04N19/593 , H04N19/105 , H04N19/176 , H04N19/192 , H04N19/48 , H04N19/50 , H04N19/52 , H04N19/61
摘要： A method for coding a block of pixels is disclosed. The method comprises the following steps: determining, for each pixel of the current block, a prediction pixel by thresholding, with a current threshold value, of coefficients resulting from a transformation applied on a window covering at least the pixel of the current block and by inverse transformation applied to the thresholded coefficients, extracting from the current block a prediction block formed of prediction pixels to generate a residue block, and coding said residue block, According to the invention, the current threshold value is determined or coded from neighbouring reconstructed pixels of the current block.
摘要翻译： 公开了一种用于对像素块进行编码的方法。 该方法包括以下步骤：通过利用当前阈值阈值化当前块的每个像素来确定由施加在至少覆盖当前块的像素的窗口上的变换产生的系数，并且由 逆变换应用于阈值系数，从当前块中提取由预测像素形成的预测块以产生残差块，并对所述残差块进行编码。根据本发明，从当前阈值的相邻重建像素 当前块。
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公开(公告)号：US20120320982A1
公开(公告)日：2012-12-20
申请号：US13514989
申请日：2010-11-25
IPC分类号： H04N7/32
CPC分类号： H04N19/573 , H04N19/105 , H04N19/139 , H04N19/147 , H04N19/176 , H04N19/46 , H04N19/51 , H04N19/593 , H04N19/61
摘要： A method for decoding a stream of coded data to reconstruct a current block of a sequence of images is disclosed. The method comprises the steps of: reconstructing for the current block a first item of motion data from a stream of coded data, identifying a first prediction block with the first item of motion data, determining a second item of motion data by template matching, identifying a second prediction block with the second item of motion data, reconstructing the current block from the first and second prediction blocks. The step of determination of the second item of motion data is a function of the first distortion calculated between the first prediction block and the second prediction block.
摘要翻译： 公开了一种用于解码编码数据流以重建图像序列的当前块的方法。 该方法包括以下步骤：从编码数据流重建当前块中的第一项运动数据，用第一项运动数据识别第一预测块，通过模板匹配确定第二项运动数据，识别 具有第二运动数据项的第二预测块，从第一和第二预测块重构当前块。 确定第二运动数据项的步骤是在第一预测块和第二预测块之间计算的第一失真的函数。
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公开(公告)号：US20120250764A1
公开(公告)日：2012-10-04
申请号：US13379184
申请日：2010-06-16
申请人： Aurelie Martin , Dominique Thoreau , Edouard Francois , Jerome Vieron , Fabien Racape , Christine Guillemot , Jean-Jacques Fuchs
发明人： Aurelie Martin , Dominique Thoreau , Edouard Francois , Jerome Vieron , Fabien Racape , Christine Guillemot , Jean-Jacques Fuchs
IPC分类号： H04N7/26
CPC分类号： H04N7/50 , H04N19/48 , H04N19/593 , H04N19/61 , H04N19/97
摘要： The process comprising splitting of an image into blocks, intra coding of a current block using spatial prediction based on a matching pursuit algorithm selecting, from a dictionary of atoms, the atom the most correlated with a causal neighborhood of the current block, is characterized in that it performs the following steps: determination of the two dimensional shift between the causal neighborhood and the selected atom, generation of at least, a new phased atom taking into account the values of the two dimensional spatial shift, use of this new atom for intra prediction, according to the matching pursuit algorithm, if better correlated than the selected one. Application to video data compression.
摘要翻译： 该过程包括将图像分割为块，使用基于匹配追踪算法的空间预测的当前块的帧内编码，从原子字典中选择与当前块的因果关系最相关的原子，其特征在于 它执行以下步骤：确定因果邻域和所选原子之间的二维移位，至少产生一个考虑到二维空间位移的值的新的相位原子，使用该新原子进行内部 预测，根据匹配追求算法，如果与所选择的相关性更好相关。 应用于视频数据压缩。
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公开(公告)号：US20120243607A1
公开(公告)日：2012-09-27
申请号：US13379067
申请日：2010-06-21
IPC分类号： H04N7/32
CPC分类号： H04N19/48 , H04N19/124 , H04N19/154 , H04N19/176 , H04N19/18 , H04N19/46 , H04N19/593
摘要： A method for coding an image divided into sub-regions is described. The coding method comprises the following steps: extracting from the image sub-regions representative of other sub-regions of the image, coding the sub-regions representative of other sub-regions at a first quality, and coding the other sub-regions at a second quality strictly lower than the first quality.
摘要翻译： 描述了分割成子区域的图像的编码方法。 该编码方法包括以下步骤：从表示图像的其他子区域的图像子区域中提取出代表其他子区域的子区域的第一质量，以及对其他子区域进行编码 第二品质严格低于第一品质。
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公开(公告)号：US07853076B2
公开(公告)日：2010-12-14
申请号：US10583673
申请日：2004-12-14
IPC分类号： G06K9/00
CPC分类号： G06K9/4623 , G06K9/4652 , G06K9/4671 , G06T5/003 , G06T7/262 , G06T2207/10024
摘要： The invention concerns a device and a method for creating a saliency map of an image. It comprises the steps of: Projection of said image according to the luminance component and if said image is a color image, according to the luminance component and according to the chrominance components, Perceptual sub-bands decomposition of said components according to the visibility threshold of a human eye, Extraction of the salient elements of the sub-bands related to the luminance component, Contour enhancement of said salient elements in each sub-band related to the luminance component, Calculation of a saliency map from the contour enhancement, for each sub-band related to the luminance component. Creation of the saliency map as a function of the saliency maps obtained for each sub-band.
摘要翻译： 本发明涉及用于创建图像的显着图的装置和方法。 它包括以下步骤：根据亮度分量投影所述图像，如果所述图像是彩色图像，则根据亮度分量并根据色度分量，根据可见度阈值对所述分量的感知子带分解 人眼，与亮度分量相关的子带的突出元素的提取，与亮度分量相关的每个子带中的所述突出元素的轮廓增强，从轮廓增强计算显着图，对于每个子 与亮度分量相关的带。 创建显着性图作为每个子带获得的显着性图的函数。
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公开(公告)号：US07801218B2
公开(公告)日：2010-09-21
申请号：US11170574
申请日：2005-06-29
申请人： Yannick Olivier , Edouard Francois , Franck Hiron
发明人： Yannick Olivier , Edouard Francois , Franck Hiron
CPC分类号： H04N19/61 , H04N19/107 , H04N19/112 , H04N19/139 , H04N19/176 , H04N19/194 , H04N19/53 , H04N19/537 , H04N19/85
摘要： The method is characterized in that the pre-analysis phase performs correlation level calculations of the even and odd field blocks of the current picture with the even and odd blocks of the current picture with the even and odd field blocks of the reference picture based on motion vectors calculated during this phase and corresponding to the blocks to impose, during the coding mode decision stage and among the inter coding modes, the inter coding between fields of the same parity or of opposing parity or the inter coding between frames, according to the correlation levels.
摘要翻译： 该方法的特征在于，预分析阶段使用当前图像的偶数和奇数块，利用基于运动的参考图像的偶数和奇数场块来执行当前图像的偶数和奇数场块的相关电平计算 在该阶段期间计算的矢量对应于在编码模式判定阶段期间和在帧间编码模式中，根据相关性在相同奇偶校验或相对奇偶校验的场之间或帧之间的帧间编码之间进行帧间编码的块 水平。
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公开(公告)号：US07702168B2
公开(公告)日：2010-04-20
申请号：US10954774
申请日：2004-09-30
CPC分类号： H04N19/577 , H04N19/51 , H04N19/61
摘要： The process for coding the current block comprises a step of selecting the predicted block from among candidate blocks, the selection being dependent on a difference DBdrx,dry between the co-located block of the current image block lying in an image of type B and the block of a reference image, the latter block being designated by the motion vector with components drx, dry which is allocated to co-located block and which is colinear with the motion vector Vp allocated to the current block and designating the candidate block. The process relates to data compression, the transmission of digital images using the video coding standard comprising a direct prediction mode, for example the h263, MPEG4 or h261 standard.
摘要翻译： 用于编码当前块的处理包括从候选块中选择预测块的步骤，该选择取决于差异DBdrx，位于类型B的图像中的当前图像块的同位置块之间的干扰， 参考图像的块，后一块由具有分配给共址的块的分量drx，干燥的运动矢量指定，并且与分配给当前块的运动矢量Vp并联并指定候选块。 该过程涉及数据压缩，使用包括直接预测模式（例如h263，MPEG4或h261标准）的视频编码标准传输数字图像。
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公开(公告)号：US10142650B2
公开(公告)日：2018-11-27
申请号：US13503026
申请日：2010-10-13
IPC分类号： H04N7/26 , H04N7/36 , G06F15/00 , H04N19/52 , H04N19/176 , H04N19/513 , H04N19/61 , H04N19/132 , H04N19/523
摘要： The method includes determining at least one candidate motion vector associated with a neighboring block of said current block. A prediction motion vector is determined from the candidate motion vector, and the current block is coded from the prediction motion vector. The prediction motion vector is determined according by determining, for the candidate motion vector, a corrective motion vector so as to minimize a distortion calculated between the neighoboring block successively coded and reconstructed and a prediction block motion compensated by the at least one candidate motion vector modified by the corrective motion vector. The prediction motion vector is then determined from the candidate motion vector modified by the corrective motion vector.
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公开(公告)号：US10075707B2
公开(公告)日：2018-09-11
申请号：US14003789
申请日：2012-03-08
IPC分类号： H04N19/51 , H04N19/52 , H04N19/139 , H04N19/513 , H04N19/43
CPC分类号： H04N19/50 , H04N19/139 , H04N19/43 , H04N19/51 , H04N19/513 , H04N19/52
摘要： Motion vectors of a first reference frame are permitted to point to a plurality of further reference frames. A method of storing the motion vectors comprises, when a block of the first reference frame has two motion vectors initially, selecting one of the two motion vectors, the non-selected motion vector not being stored. The selected motion vector may be scaled. This can reduce the motion vector memory size.
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40.发明授权公开(公告)号：US09930332B2
公开(公告)日：2018-03-27
申请号：US14344315
申请日：2012-09-12
IPC分类号： H04N19/105 , H04N19/159 , H04N19/176 , H04N19/46 , H04N19/196 , H04N19/593 , H04N19/463 , H04N19/52
CPC分类号： H04N19/105 , H04N19/159 , H04N19/176 , H04N19/196 , H04N19/46 , H04N19/463 , H04N19/52 , H04N19/593
摘要： Reference prediction mode values, also referred to as most probable modes, usable for encoding or decoding of a prediction mode related to a current coding unit, are derived. First and second reference prediction mode values are derived (S402) from respective prediction modes of at least two neighboring coding units of the current coding unit. The first and second reference prediction modes are different. A third reference prediction mode value is derived (S403) from the first and second reference prediction mode values. The third reference prediction mode is different from each of said first and second reference prediction mode values.By deriving three MPMs instead of two for comparison with the prediction mode of the current coding block the coding efficiency is improved. This is due to the increase in the probability that the prediction mode of the current coding block corresponds to one of the derived most probable modes.
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