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公开(公告)号：US08971655B2
公开(公告)日：2015-03-03
申请号：US13383346
申请日：2010-03-16
IPC分类号： G06K9/36 , H04N19/14 , H04N19/129 , H04N19/176 , H04N19/147 , H04N19/156 , H04N19/46
CPC分类号： H04N19/00157 , H04N19/105 , H04N19/117 , H04N19/129 , H04N19/14 , H04N19/157 , H04N19/176 , H04N19/18 , H04N19/19 , H04N19/46 , H04N19/61 , H04N19/86 , H04N19/88
摘要： An encoding method for encoding of images and corresponding decoding method is disclosed, as well as an encoder and a decoder. The encoding method comprises creating, in an encoder, a residual block from an original block and a prediction block which is an approximation of the original block, wherein the created residual block comprises residual block elements. The en-coding method further comprises re-ordering, in the encoder, the residual block elements within the residual block; and applying, in the encoder, a transform to the re-ordered residual block. By re-ordering the residual block elements prior to applying a transform, an improved efficiency of the encoding may be obtained.
摘要翻译： 公开了一种用于编码图像的编码方法和相应的解码方法，以及编码器和解码器。 编码方法包括在编码器中创建来自原始块的残差块和作为原始块的近似的预测块，其中所创建的残余块包括残余块元素。 en编码方法还包括在编码器中重新排序剩余块内的残余块元素; 以及在编码器中对重新排序的残余块应用变换。 通过在应用变换之前重新排序残余块元素，可以获得改进的编码效率。
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公开(公告)号：US20120170858A1
公开(公告)日：2012-07-05
申请号：US13383346
申请日：2010-03-16
IPC分类号： G06K9/36
CPC分类号： H04N19/00157 , H04N19/105 , H04N19/117 , H04N19/129 , H04N19/14 , H04N19/157 , H04N19/176 , H04N19/18 , H04N19/19 , H04N19/46 , H04N19/61 , H04N19/86 , H04N19/88
摘要： An encoding method for encoding of images and corresponding decoding method is disclosed, as well as an encoder and a decoder. The encoding method comprises creating, in an encoder, a residual block from an original block and a prediction block which is an approximation of the original block, wherein the created residual block comprises residual block elements. The en-coding method further comprises re-ordering, in the encoder, the residual block elements within the residual block; and applying, in the encoder, a transform to the re-ordered residual block. By re-ordering the residual block elements prior to applying a transform, an improved efficiency of the encoding may be obtained.
摘要翻译： 公开了一种用于编码图像的编码方法和相应的解码方法，以及编码器和解码器。 编码方法包括在编码器中创建来自原始块的残差块和作为原始块的近似的预测块，其中所创建的残余块包括残余块元素。 en编码方法还包括在编码器中重新排序剩余块内的残余块元素; 以及在编码器中对重新排序的残余块应用变换。 通过在应用变换之前重新排序残余块元素，可以获得改进的编码效率。
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3.发明申请公开(公告)号：US20120230599A1
公开(公告)日：2012-09-13
申请号：US13065406
申请日：2011-03-22
IPC分类号： G06K9/36
摘要： A solution according to one or more embodiments of the present invention is to reconstruct image blocks where only the frequency coefficient that is most sensitive to changes of an average value of the residual image block, typically the lowest frequency coefficient, is present with a flat residual image. The other image blocks are reconstructed by applying an inverse spatial 2D transform. Hence, the other image blocks comprise image blocks with multiple coefficients and image blocks with a single coefficient and wherein the single coefficient is not the coefficient determining that is most sensitive to changes of an average value of the residual image block.
摘要翻译： 根据本发明的一个或多个实施例的解决方案是重建图像块，其中仅存在对残差图像块的平均值（通常为最低频率系数）的变化最敏感的频率系数具有平坦残差 图片。 通过应用逆空间2D变换来重建其他图像块。 因此，其他图像块包括具有多个系数的图像块和具有单个系数的图像块，并且其中单个系数不是对残留图像块的平均值的变化最敏感的系数。
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4.发明授权公开(公告)号：US08515191B2
公开(公告)日：2013-08-20
申请号：US13065406
申请日：2011-03-22
摘要： A solution according to one or more embodiments of the present invention is to reconstruct image blocks where only the frequency coefficient that is most sensitive to changes of an average value of the residual image block, typically the lowest frequency coefficient, is present with a flat residual image. The other image blocks are reconstructed by applying an inverse spatial 2D transform. Hence, the other image blocks comprise image blocks with multiple coefficients and image blocks with a single coefficient and wherein the single coefficient is not the coefficient determining that is most sensitive to changes of an average value of the residual image block.
摘要翻译： 根据本发明的一个或多个实施例的解决方案是重建图像块，其中仅存在对残差图像块的平均值（通常为最低频率系数）的变化最敏感的频率系数具有平坦残差 图片。 通过应用逆空间2D变换来重建其他图像块。 因此，其他图像块包括具有多个系数的图像块和具有单个系数的图像块，并且其中单个系数不是对残留图像块的平均值的变化最敏感的系数。
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公开(公告)号：US20130051480A1
公开(公告)日：2013-02-28
申请号：US13695402
申请日：2011-02-01
IPC分类号： H04N7/26
CPC分类号： H04N19/86 , H04N19/117 , H04N19/14 , H04N19/176 , H04N19/182 , H04N19/82
摘要： A block-specific filter decision value is calculated for a pixel block (10) in a video frame. If the block-specific filter decision value is below a block-specific threshold, each row or column (12) in the block (10) is individually processed in order to select between a strong and a weak de-blocking filter. A respective line-specific filter decision value is thereby calculated for each row or column (12) in the block (10) and compared to a line-specific threshold. If the line-specific filter decision value calculated for a row or column (12) is below the line-specific threshold a strong de-blocking filter is selected for the row or column (12), otherwise a weak de-blocking filter is instead selected to combat any blocking artifacts.
摘要翻译： 针对视频帧中的像素块（10）计算块特定的滤波器判定值。 如果块特定滤波器判定值低于块特定阈值，则对块（10）中的每一行或列（12）进行单独处理，以便在强和弱解除滤波器之间进行选择。 由此针对块（10）中的每个行或列（12）计算出相应的行特定过滤器判定值，并将其与行特定阈值进行比较。 如果针对行或列（12）计算的行特定过滤器判定值低于行特定阈值，则为行或列（12）选择强解块过滤器，否则将替代弱解块过滤器 被选中以对抗任何阻塞文物。
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公开(公告)号：US20110194614A1
公开(公告)日：2011-08-11
申请号：US13021012
申请日：2011-02-04
CPC分类号： H04N19/86 , H04N19/117 , H04N19/14 , H04N19/176 , H04N19/182 , H04N19/82
摘要： First and second filter decision values are calculated for a pixel block in a video frame. The first filter decision value is representative of how smooth pixel values in a first line of pixels in the block and in a corresponding first line of pixels in a neighboring pixel block in the video frame are in a direction parallel to a filtering direction. The second filter decision value is representative of how close pixel values in a current line of pixels in the block approximate a flat line and how close pixel values in a corresponding current line of pixels in the neighboring block approximate a flat line. The two filter decision values are compared to respective thresholds and a strong de-blocking filter is selected for the current line if the filter decision values are below the thresholds, otherwise a weak de-blocking filter is selected to combat any blocking artifacts.
摘要翻译： 针对视频帧中的像素块计算第一和第二滤波器判定值。 第一滤波器判定值表示在视频帧中相邻像素块中的块中的像素和对象的第一行中的像素的平滑像素值在平行于滤波方向的方向上的平滑像素值。 第二滤波器判定值表示块中当前像素线中的像素值近似于平坦线的近似像素值以及相邻块中相应的当前行像素中的像素值近似于平坦线的距离近似。 将两个滤波器判定值与相应的阈值进行比较，如果滤波器判定值低于阈值，则为当前行选择强去块滤波器，否则选择弱解块滤波器以对抗任何块伪影。
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公开(公告)号：US09100658B2
公开(公告)日：2015-08-04
申请号：US13515409
申请日：2010-12-17
IPC分类号： H04N7/32 , H04N19/573 , H04N19/46 , H04N19/172 , H04N19/176 , H04N19/103 , H04N19/102 , H04N19/105 , H04N19/70 , H04N19/154
CPC分类号： H04N19/573 , H04N19/105 , H04N19/107 , H04N19/154 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/46 , H04N19/513 , H04N19/70
摘要： Methods and arrangements in video encoding and decoding entities. The methods and arrangements involve determining (804) the frequency of occurrence of a plurality of reference pictures associated with an obtained (802) set of blocks, which are neighbors of a block B. The methods and arrangements further involve selecting (806) a reference picture or combination of reference pictures having the highest determined frequency of occurrence to be a prediction, Cpred, of the reference picture or combination of reference pictures, C, to be used when encoding/decoding the block, B. The methods and arrangements further involve providing/obtaining (610,612, 808) an indication specifying whether the prediction, Cpred, corresponds to C, and when the prediction, Cpred, is indicated to correspond to C, the encoded block, Be, is decoded (812) based on the prediction Cpred.
摘要翻译： 视频编码和解码实体中的方法和布置。 方法和布置涉及确定（804）与作为块B的相邻块的获得的（802）组块相关联的多个参考图片的出现频率。方法和装置还涉及选择（806）参考 B.具有最高确定出现频率的参考图像的图像或组合，作为在编码/解码块时使用的参考图像或参考图像的组合C的预测，Cpred。B.该方法和装置还涉及 提供/获取（610,612,808）指示预测Cpred是否对应于C的指示，以及当预测Cpred被指示为对应于C时，编码块Be基于预测被解码（812） Cpred。
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公开(公告)号：US20120250765A1
公开(公告)日：2012-10-04
申请号：US13515140
申请日：2010-12-17
IPC分类号： H04N7/32
CPC分类号： H04N19/573 , H04N19/105 , H04N19/107 , H04N19/154 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/46 , H04N19/513 , H04N19/70
摘要： Methods and arrangements in video encoding and decoding entities. The methods and arrangements relate to the joint encoding of reference information associated with encoded video. The method and arrangement in a decoding entity relate to obtaining (402) a single syntax element associated with an encoded block Be, and identifying (404) a reference mode and one or more reference pictures based on the obtained syntax element. The method and arrangement further relate to-decoding (406) of the block Be based on the identified reference mode and one or more reference pictures, thus providing a decoded block, B, of pixels.
摘要翻译： 视频编码和解码实体中的方法和布置。 所述方法和装置涉及与编码视频相关联的参考信息的联合编码。 解码实体中的方法和布置涉及获得（402）与编码块Be相关联的单个语法元素，并且基于所获得的语法元素来识别（404）参考模式和一个或多个参考图片。 该方法和装置还涉及基于所识别的参考模式和一个或多个参考图片的块Be的解码（406），从而提供像素的解码块B。
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公开(公告)号：US20120250766A1
公开(公告)日：2012-10-04
申请号：US13515409
申请日：2010-12-17
IPC分类号： H04N7/32
CPC分类号： H04N19/573 , H04N19/105 , H04N19/107 , H04N19/154 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/46 , H04N19/513 , H04N19/70
摘要： Methods and arrangements in video encoding and decoding entities. The methods and arrangements involve determining (804) the frequency of occurrence of a plurality of reference pictures associated with an obtained (802) set of blocks, which are neighbors of a block B. The methods and arrangements further involve selecting (806) a reference picture or combination of reference pictures having the highest determined frequency of occurrence to be a prediction, Cpred, of the reference picture or combination of reference pictures, C, to be used when encoding/decoding the block, B. The methods and arrangements further involve providing/obtaining (610,612, 808) an indication specifying whether the prediction, Cpred, corresponds to C, and when the prediction, Cpred, is indicated to correspond to C, the encoded block, Be, is decoded (812) based on the prediction Cpred.
摘要翻译： 视频编码和解码实体中的方法和布置。 方法和布置涉及确定（804）与作为块B的相邻块的获得的（802）组块相关联的多个参考图片的出现频率。方法和装置还涉及选择（806）参考 B.具有最高确定出现频率的参考图像的图像或组合，作为在编码/解码块时使用的参考图像或参考图像的组合C的预测，Cpred。B.该方法和装置还涉及 提供/获取（610,612,808）指示预测Cpred是否对应于C的指示，以及当预测Cpred被指示为对应于C时，编码块Be基于预测被解码（812） Cpred。
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公开(公告)号：US09414066B2
公开(公告)日：2016-08-09
申请号：US13979006
申请日：2012-01-13
IPC分类号： H04N19/86 , H04N19/176 , H04N19/117 , H04N19/14
CPC分类号： H04N19/86 , H04L43/16 , H04N19/117 , H04N19/124 , H04N19/14 , H04N19/176 , H04N19/182
摘要： A method of reducing blocking artifacts associated with consecutive pixels of a block boundary of an image, such as e.g. a video frame is provided. Pixels values of pixels selected from a first block and at least a neighboring block, being located on opposite sides of a block boundary are evaluated. A first offset for the two pixels of each block located next to the block boundary is calculated, after which the first offset is compared to a first threshold value. If abs[first offset] =first threshold, the respective pixel values of j consecutive pixels from the first block and the respective pixel values of k consecutive pixels from the second block are modified by applying weak filtering or no filtering at all on the respective pixels, where n>0, m>0 n>=j, and m>=k.
摘要翻译： 一种减少与图像的块边界的连续像素相关联的块伪影的方法， 提供视频帧。 评估从位于块边界的相对侧上的从第一块和至少相邻块选择的像素的像素值。 计算位于块边界旁边的每个块的两个像素的第一偏移，之后将第一偏移与第一阈值进行比较。 如果abs [第一偏移] <第一阈值，则通过对各个像素应用正态滤波来修改来自第一块的n个连续像素的相应像素值和来自第二块的m个连续像素的各个像素值， 第一偏移]> =第一阈值，通过对各像素进行弱滤波或全部滤波来修改来自第一块的j个连续像素的相应像素值和来自第二块的k个连续像素的各个像素值，其中 n> 0，m> 0n> = j，m> = k。
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