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1. 发明申请

WO2011010959A1 METHOD AND APPARATUS FOR ENCODING AND DECODING OF IMAGES 审中-公开
标题翻译：用于编码和解码图像的方法和装置
公开(公告)号：WO2011010959A1
公开(公告)日：2011-01-27
申请号：PCT/SE2010/050286
申请日：2010-03-16
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , ANDERSSON, Kenneth , PRIDDLE, Clinton , NORKIN, Andrey , WU, Zhuangfei
发明人： ANDERSSON, Kenneth , PRIDDLE, Clinton , NORKIN, Andrey , WU, Zhuangfei
IPC分类号： H04N7/50
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。

2. 发明申请

WO2012119655A1 DECODING OF TRANSFORMS WITH CURVED BASIS FUNCTIONS 审中-公开
标题翻译：用变换的基函数解码变换
公开(公告)号：WO2012119655A1
公开(公告)日：2012-09-13
申请号：PCT/EP2011/053580
申请日：2011-03-10
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , NORKIN, Andrey , PRIDDLE, Clinton , ANDERSSON, Kenneth
发明人： NORKIN, Andrey , PRIDDLE, Clinton , ANDERSSON, Kenneth
IPC分类号： H04N7/26 , H04N7/30
CPC分类号： H04N19/86 , H04N19/44 , H04N19/60
摘要： The solution according to 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 (703) that is most sensitive to changes of an average value of the residual image block.
摘要翻译：根据本发明的实施例的解决方案是重建图像块，其中只有残留图像块的平均值（通常为最低频率系数）的变化最敏感的频率系数以平坦残差图像存在。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确定（703）。

3. 发明申请

WO2011096869A1 DE-BLOCKING FILTERING CONTROL 审中-公开
标题翻译：去阻塞过滤控制
公开(公告)号：WO2011096869A1
公开(公告)日：2011-08-11
申请号：PCT/SE2010/051494
申请日：2010-12-29
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , NORKIN, Andrey , ANDERSSON, Kenneth , PRIDDLE, Clinton
发明人： NORKIN, Andrey , ANDERSSON, Kenneth , PRIDDLE, Clinton
IPC分类号： H04N7/26 , H04N7/50
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 (10) in a video frame. The first filter decision value is representative of how smoothpixel values in a first line of pixels (11, 13, 15, 17) in the block (10) and in a corresponding first line of pixels (21, 23, 25, 27) in a neighboring pixel block (20) 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 (12) of pixels (11, 13, 15, 17) in the block (10) approximate a flat line and how close pixel values in a corresponding current line (22) of pixels (21, 23, 25, 27) in the neighboring block (20) 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 (12) 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（10）计算第一和第二滤波器判定值。第一滤波器判定值表示块（10）中的像素（11,13,15,17）中的像素（21,23,25,27）的对应的第一行中的平滑像素值如何在视频帧中的相邻像素块（20）处于与滤波方向平行的方向。第二滤波器判定值表示块（10）中的像素（11,13,15,17）的当前行（12）中的近似像素值近似于平坦线，并且相应的当前行中的像素值接近相邻块（20）中的像素（21,23,25,27）的像素（22）近似于平直线。将两个滤波器判定值与相应的阈值进行比较，并且如果滤波器判定值低于阈值，则为当前行（12）选择强的解阻塞滤波器，否则选择弱解块滤波器以对抗任何块伪影。

4. 发明申请

WO2011096876A1 DE-BLOCKING FILTERING CONTROL 审中-公开
标题翻译：去阻塞过滤控制
公开(公告)号：WO2011096876A1
公开(公告)日：2011-08-11
申请号：PCT/SE2011/050105
申请日：2011-02-01
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , NORKIN, Andrey , ANDERSSON, Kenneth , PRIDDLE, Clinton
发明人： NORKIN, Andrey , ANDERSSON, Kenneth , PRIDDLE, Clinton
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）中的每个行或列（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）中的每一行或列（12）计算相应的线特定滤波器判定值，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。

5. 发明申请

WO2012096610A1 DEBLOCKING FILTERING 审中-公开
标题翻译：解锁过滤
公开(公告)号：WO2012096610A1
公开(公告)日：2012-07-19
申请号：PCT/SE2011/051199
申请日：2011-10-06
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , NORKIN, Andrey , ANDERSSON, Kenneth , SJÖBERG, Rickard
发明人： NORKIN, Andrey , ANDERSSON, Kenneth , SJÖBERG, Rickard
IPC分类号： H04N7/26 , H04N7/50
CPC分类号： H04N19/865 , H04N19/117 , H04N19/14 , H04N19/176 , H04N19/182 , H04N19/61 , H04N19/80 , H04N19/82 , H04N19/86
摘要： Blocking artifacts at a block boundary (1) between a block (10) and a neighboring block (20) in a video frame are reduced by calculating an offset based on pixel values of pixels (11, 13) in a line (12) of pixels (11, 13, 15, 17) in the block (10) and based on pixel values of pixels (21, 23) in a corresponding line (22) of pixels (21, 23, 25, 27) in the neighboring block (20). The offset is added to the pixel value of the pixel (11) closest to the block boundary (1) in the line (12) of pixels (11, 13, 15, 17) and is subtracted from the pixel value of the pixel (21) closest to the block boundary (1) in the corresponding line (22) of pixels (21, 23, 25, 27). The resulting deblocking filter has good low-pass characteristics and is efficient for reducing blocking artifact.
摘要翻译：在视频帧中的块（10）和相邻块（20）之间的块边界（1）处的块边缘（1）中的伪像通过基于像素（11,13）中的像素值（11,13）的像素值基于块（10）中的像素（11,13,15,17），并且基于相邻块中的像素（21,23,25,27）的对应行（22）中的像素（21,23）的像素值（20）。偏移被添加到像素（11,13,15,17）的行（12）中最靠近块边界（1）的像素（11）的像素值，并从像素（11,13,15,17）的像素值最接近像素（21,23,25,27）的对应行（22）中的块边界（1）的距离。所得到的去块滤波器具有良好的低通特性，并且对于减少块伪影是有效的。

6. 发明申请

WO2009088353A1 SYSTEMS AND METHODS FOR USING DC CHANGE PARAMETERS IN VIDEO CODING AND DECODING 审中-公开
标题翻译：在视频编码和解码中使用直流变化参数的系统和方法
公开(公告)号：WO2009088353A1
公开(公告)日：2009-07-16
申请号：PCT/SE2009/050005
申请日：2009-01-08
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , ANDERSSON, Kenneth , FRÖJDH, Per , SJÖBERG, Rickard , PRIDDLE, Clinton , SAMUELSSON, Jonatan
发明人： ANDERSSON, Kenneth , FRÖJDH, Per , SJÖBERG, Rickard , PRIDDLE, Clinton , SAMUELSSON, Jonatan
IPC分类号： H04N7/50 , H04N7/26
CPC分类号： H04N19/82 , H04N19/117 , H04N19/136 , H04N19/176 , H04N19/463 , H04N19/61 , H04N19/70
摘要： The present application discloses systems and methods for using DC change parameters in video coding. In one embodiment, the method includes the steps of: (a) obtaining a DC change parameter; (b) decoding encoded video data to obtain reconstructed pixel values; and (c) using the reconstructed pixel values, a filter, and the DC change parameter to obtain filtered reconstructed pixel values with a DC change.
摘要翻译：本申请公开了在视频编码中使用DC变化参数的系统和方法。在一个实施例中，该方法包括以下步骤：（a）获得DC变化参数; （b）解码编码的视频数据以获得重建的像素值; 以及（c）使用重建的像素值，滤波器和DC变化参数来获得具有DC变化的经滤波的重构像素值。

7. 发明申请

WO2012118421A1 DEBLOCKING FILTERING CONTROL 审中-公开
标题翻译：消除过滤控制
公开(公告)号：WO2012118421A1
公开(公告)日：2012-09-07
申请号：PCT/SE2011/051526
申请日：2011-12-16
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , NORKIN, Andrey , ANDERSSON, Kenneth , SJÖBERG, Rickard
发明人： NORKIN, Andrey , ANDERSSON, Kenneth , SJÖBERG, Rickard
IPC分类号： H04N7/26
CPC分类号： H04N19/86 , H04N19/117 , H04N19/14 , H04N19/176 , H04N19/82
摘要： A first filter decision value is calculated for a block (10) of pixels (11, 13, 15, 17) in a video frame based on pixel values of pixels (11, 13, 15) in a first line (12) of pixels (11, 13, 15, 17) in the block (10). A second filter decision value is also calculated for the block (10) based on pixel values of pixels (21, 23, 25, 27) in a corresponding first line (22) of pixels (21, 23, 25, 27) in a neighboring block (20) in the video frame. The first filter decision value is used to determine how many pixels in a line (12) of pixels (11, 13, 15, 17) in the block (10) to filter relative to a block boundary (1) between the block (10) and the neighboring block (20). The second filter decision value is used to determine how many pixels in a corresponding line (22) of pixels (21, 23, 25, 27) in the neighboring block to filter relative to the block boundary (1).
摘要翻译：基于像素的第一行（12）中的像素（11,13,15）的像素值，针对视频帧中的像素（11,13,15,17）的块（10）计算第一滤波器判定值（11,13,15,17）。还基于像素（21,23,25,27）的对应的第一行（22）中的像素（21,23,25,27）中的像素（21,23,25,27）的像素值，针对块（10）计算第二滤波器判定值，视频帧中的相邻块（20）。第一滤波器判定值用于确定块（10）中的像素（11,13,15,17）中的像素（12）中相对于块（10）之间的块边界（1）进行滤波的像素数）和相邻块（20）。第二滤波器判定值用于确定相邻块中相对于块边界（1）滤波的像素（21,23,25,27）的对应行（22）中的像素数量。

8. 发明申请

WO2012096623A8 DEBLOCKING FILTERING 审中-公开
公开(公告)号：WO2012096623A8
公开(公告)日：2012-07-19
申请号：PCT/SE2012/050027
申请日：2012-01-13
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , NORKIN, Andrey , SJÖBERG, Rickard , ANDERSSON, Kenneth
发明人： NORKIN, Andrey , SJÖBERG, Rickard , ANDERSSON, Kenneth
IPC分类号： H04N7/26 , H04N7/50
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.

9. 发明申请

WO2012096614A2 A METHOD FOR FILTER CONTROL AND A FILTERING CONTROL DEVICE 审中-公开
标题翻译：一种滤波器控制方法及滤波控制装置
公开(公告)号：WO2012096614A2
公开(公告)日：2012-07-19
申请号：PCT/SE2011/051563
申请日：2011-12-21
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , NORKIN, Andrey , ANDERSSON, Kenneth , SJÖBERG, Rickard
发明人： NORKIN, Andrey , ANDERSSON, Kenneth , SJÖBERG, Rickard
CPC分类号： H04N19/90 , H04N19/117 , H04N19/157 , H04N19/176 , H04N19/46 , H04N19/86
摘要： Current deblocking filters are using the same filters with the same filtering strength irrespective of the block size and the size of the transform used. However, in the new video coding standards such as emerging HEVC the PU sizes can vary from 4 to 64 and the TU sizes can vary from 4 to 32. Therefore, filtering the same amount of pixels (e.g. two or three) from the block boundary for the block of size 4 can be excessive, while for the block size 32 it may not be enough, with the result that the boundary between two blocks is still visible. Hence, there is a need for an efficient deblocking filter control that can be used to reduce blocking artifacts at block boundaries and that does not have the above mentioned drawbacks. It is a general objective to provide an efficient deblocking filter control. Thus, the objective is solved by applying different filters for different block sizes such as CU, PU or/and TU sizes. Accordingly, the deblocking filtering strength is adjusted based on the block size, which implies that the amount of modification applied to pixels by the deblocking filter is varied depending on the block size. The amount of modification that is being varied is in one embodiment the number of pixels to be modified.
摘要翻译：当前去块滤波器使用具有相同滤波强度的相同滤波器，而不管块大小和所用变换的大小。然而，在诸如新兴HEVC的新的视频编码标准中，PU尺寸可以在4到64之间变化，并且TU尺寸可以在4到32之间变化。因此，从块边界过滤相同量的像素（例如两个或三个）因为块4的大小可能会过大，而对于块大小为32，这可能还不够，结果是两块之间的边界仍然可见。因此，需要一种有效的去块滤波器控制，其可用于减少块边界处的块伪影并且不具有上述缺点。提供有效的去块滤波器控制是一个总体目标。因此，通过对不同的块大小（例如CU，PU或/和TU尺寸）应用不同的滤波器来解决目的。因此，根据块大小调整去块滤波强度，这意味着根据块大小来改变由去块滤波器施加到像素的修改量。正在变化的修改量在一个实施例中是要修改的像素的数量。

10. 发明申请

WO2009080132A1 IMPROVED PIXEL PREDICTION FOR VIDEO CODING 审中-公开
标题翻译：改进的像素预测用于视频编码
公开(公告)号：WO2009080132A1
公开(公告)日：2009-07-02
申请号：PCT/EP2008/005895
申请日：2008-07-16
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , ANDERSSON, Kenneth , FRÖJDH, Per , PRIDDLE, Clinton , SAMUELSSON, Jonatan , SJÖBERG, Rickard
发明人： ANDERSSON, Kenneth , FRÖJDH, Per , PRIDDLE, Clinton , SAMUELSSON, Jonatan , SJÖBERG, Rickard
IPC分类号： H04N7/26 , H04N7/34 , H04N7/36
CPC分类号： H04N19/593 , H04N19/103 , H04N19/117 , H04N19/147 , H04N19/17 , H04N19/176 , H04N19/194 , H04N19/523 , H04N19/82
摘要： Method of encoding an input video frame into an encoded video frame. The method comprises the steps of disassembling the input video frame into a plurality of blocks of pixels; and for each block being a current block, generating a corresponding predicted block from already reconstructed pixels, generating a residual block by subtracting the predicted block from the current block, and generating a reconstructed block from the residual block and the predicted block, generating the encoded video frame from the residual block, creating a local structure of reconstructed pixels in a region of the predicted block and aligning the predicted block with the local structure to produce an aligned predicted block, wherein the aligned predicted block is used in the steps of generating the residual block and generating the corresponding reconstructed block. A corresponding method for decoding the encoded video frame into a decoded video frame also uses a step of creating a local structure of reconstructed pixels in a region of the predicted block and aligning the predicted block with the local structure to produce an aligned predicted block.
摘要翻译：将输入视频帧编码成编码视频帧的方法。该方法包括将输入视频帧分解为多个像素块的步骤; 并且对于每个块是当前块，从已经重建的像素生成对应的预测块，通过从当前块中减去预测块产生残差块，并从残差块和预测块生成重构块，视频帧，在所述预测块的区域中创建重建像素的局部结构，并将所述预测块与所述局部结构对准以产生对准的预测块，其中所述对准预测块用于生成剩余块并生成相应的重建块。用于将编码视频帧解码为解码视频帧的相应方法还使用在预测块的区域中创建重建像素的局部结构并将预测块与局部结构对准以产生对准预测块的步骤。

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