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1. 发明申请

US20130287124A1 Deblocking Filtering 有权
标题翻译：去块过滤
公开(公告)号：US20130287124A1
公开(公告)日：2013-10-31
申请号：US13979006
申请日：2012-01-13
申请人： Andrey Norkin , Kenneth Andersson , Rickard Sjöberg
发明人： Andrey Norkin , Kenneth Andersson , Rickard Sjöberg
IPC分类号： H04N7/26
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。

2. 发明授权

US09414066B2 Deblocking filtering 有权
标题翻译：解块过滤
公开(公告)号：US09414066B2
公开(公告)日：2016-08-09
申请号：US13979006
申请日：2012-01-13
申请人： Andrey Norkin , Kenneth Andersson , Rickard Sjöberg
发明人： Andrey Norkin , Kenneth Andersson , Rickard Sjöberg
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。

3. 发明申请

US20130329814A1 Deblocking Filtering Control 有权
标题翻译：去块过滤控制
公开(公告)号：US20130329814A1
公开(公告)日：2013-12-12
申请号：US14001627
申请日：2011-12-16
申请人： Andrey Norkin , Kenneth Andersson , Rickard Sjöberg
发明人： Andrey Norkin , Kenneth Andersson , Rickard Sjöberg
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。

4. 发明申请

US20130294525A1 Method for Filter Control and a Filtering Control Device 有权
标题翻译：滤波器控制方法和滤波控制装置
公开(公告)号：US20130294525A1
公开(公告)日：2013-11-07
申请号：US13979495
申请日：2011-12-21
申请人： Andrey Norkin , Kenneth Andersson , Rickard Sjöberg
发明人： Andrey Norkin , Kenneth Andersson , Rickard Sjöberg
IPC分类号： H04N7/26
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：当前的去块滤波器使用具有相同滤波强度的相同滤波器，而不管块大小和所使用的变换的大小。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，从块边界滤波相同数量的像素（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，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，其可以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待修改的像素数。

5. 发明授权

US09641841B2 Deblocking filtering control 有权
公开(公告)号：US09641841B2
公开(公告)日：2017-05-02
申请号：US14001627
申请日：2011-12-16
申请人： Andrey Norkin , Kenneth Andersson , Rickard Sjöberg
发明人： Andrey Norkin , Kenneth Andersson , Rickard Sjöberg
IPC分类号： H04N19/117 , H04N19/86 , H04N19/176 , H04N19/14 , H04N19/82
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).

6. 发明授权

US09565436B2 Method for filter control and a filtering control device 有权
标题翻译：滤波器控制方法和滤波控制装置
公开(公告)号：US09565436B2
公开(公告)日：2017-02-07
申请号：US13979495
申请日：2011-12-21
申请人： Andrey Norkin , Kenneth Andersson , Rickard Sjöberg
发明人： Andrey Norkin , Kenneth Andersson , Rickard Sjöberg
IPC分类号： H04N7/12 , H04N11/02 , H04N19/90 , H04N19/176 , H04N19/46 , H04N19/117 , H04N19/157 , H04N19/86
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：当前的去块滤波器使用具有相同滤波强度的相同滤波器，而不管块大小和所使用的变换的大小。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，从块边界滤波相同数量的像素（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，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，其可以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待修改的像素数。

7. 发明授权

US08526509B2 Deblocking filtering 有权
标题翻译：解块过滤
公开(公告)号：US08526509B2
公开(公告)日：2013-09-03
申请号：US13583437
申请日：2011-10-06
申请人： Andrey Norkin , Kenneth Andersson , Rickard Sjöberg
发明人： Andrey Norkin , Kenneth Andersson , Rickard Sjöberg
IPC分类号： H04N7/12
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。

8. 发明申请

US20130003865A1 DEBLOCKING FILTERING 有权
标题翻译：解锁过滤
公开(公告)号：US20130003865A1
公开(公告)日：2013-01-03
申请号：US13583437
申请日：2011-10-06
申请人： Andrey Norkin , Kenneth Andersson , Rickard Sjöberg
发明人： Andrey Norkin , Kenneth Andersson , Rickard Sjöberg
IPC分类号： H04N7/26
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。

9. 发明申请

US20120250766A1 Method and Arrangement for Video Coding 有权
标题翻译：视频编码的方法和布置
公开(公告)号：US20120250766A1
公开(公告)日：2012-10-04
申请号：US13515409
申请日：2010-12-17
申请人： Zhuangfei Wu , Kenneth Andersson , Clinton Priddle , Thomas Rusert , Rickard Sjöberg
发明人： Zhuangfei Wu , Kenneth Andersson , Clinton Priddle , Thomas Rusert , Rickard Sjöberg
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。

10. 发明申请

US20120213449A1 Prediction of Pixels in Image Coding 有权
标题翻译：图像编码中像素的预测
公开(公告)号：US20120213449A1
公开(公告)日：2012-08-23
申请号：US13505735
申请日：2010-11-05
申请人： Jonatan Samuelsson , Kenneth Andersson , Rickard Sjöberg
发明人： Jonatan Samuelsson , Kenneth Andersson , Rickard Sjöberg
IPC分类号： G06K9/36
CPC分类号： H04N19/50 , H04N19/105 , H04N19/11 , H04N19/176 , H04N19/182 , H04N19/513 , H04N19/553 , H04N19/593 , H04N19/61 , H04N19/80
摘要： A method and arrangement for prediction of pixel values in an image decoder. In an image decoder, a reference vector which is provided by an image encoder is provided 500. An initiation region of pixels is determined 502, which corresponds to a reference region of pixels at the image encoder. The initiation region is spatially displaced in relation to the prediction region according to the reference vector, and a part of the initiation region overlaps a part of the prediction region. Pixel values are assigned 504 to pixels of the prediction region, whose corresponding pixel values in the initiation region are known. Pixel values of the overlapping region of the initiation region are assigned 506 to the corresponding pixels in the prediction region, the pixel values being assigned 504. By determining an overlapping initiation region based on a dynamic reference vector, characteristic variations close to the prediction region are possible to utilise when predicting images, which increases the accuracy of the prediction.
摘要翻译：一种用于预测图像解码器中的像素值的方法和装置。在图像解码器中，提供由图像编码器提供的参考矢量500.确定502的像素的起始区域，其对应于图像编码器处的像素的参考区域。起始区域根据参考矢量相对于预测区域空间位移，并且起始区域的一部分与预测区域的一部分重叠。将像素值分配给预测区域的像素，其中起始区域中的相应像素值是已知的。将起始区域的重叠区域的像素值分配给预测区域中的相应像素506，将像素值分配为504.通过基于动态参考矢量确定重叠的起始区域，接近预测区域的特征变化是可能在预测图像时使用，这增加了预测的准确性。

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