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21. 发明授权

US09807386B2 Reference picture list handling 有权
公开(公告)号：US09807386B2
公开(公告)日：2017-10-31
申请号：US13704227
申请日：2012-09-27
申请人： Jonatan Samuelsson , Rickard Sjöberg
发明人： Jonatan Samuelsson , Rickard Sjöberg
IPC分类号： H04N19/00 , H04N19/503 , H04N19/70 , H04N19/31
CPC分类号： H04N19/107 , H04N19/31 , H04N19/503 , H04N19/70
摘要： In a method performed by an encoder according to a first aspect a one-bit flag is signaled, wherein the one-bit flag is associated with a reference picture in a buffer description for the current picture. The one-bit flag is set to explicitly indicate to a decoder if the reference picture should be included in a list of reference pictures or not included in the list of reference pictures. The list of reference pictures indicates which pictures that can be used for decoding the current picture.

22. 发明授权

US09706223B2 Reference picture signaling 有权
公开(公告)号：US09706223B2
公开(公告)日：2017-07-11
申请号：US13508442
申请日：2012-04-26
申请人： Jonatan Samuelsson , Rickard Sjöberg
发明人： Jonatan Samuelsson , Rickard Sjöberg
IPC分类号： H04N7/26 , H04N19/573 , H04N19/70 , H04N19/89 , H04N19/31 , H04N19/433 , H04N19/58 , H04L12/863 , H04L29/06
CPC分类号： H04N19/573 , H04L47/50 , H04L65/4069 , H04N19/31 , H04N19/433 , H04N19/58 , H04N19/70 , H04N19/89
摘要： An encoded representation of a picture of a video stream is decoded by retrieving buffer description from the encoded representation. The buffer description information is used to determine at least one picture identifier identifying a respective reference picture as decoding reference for the picture. A decoded picture buffer is updated based on the determined picture identifier. The encoded representation of the picture itself comprises the information needed by a decoder to identify the reference pictures required to decode the encoded representation.

23. 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).

24. 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。

25. 发明授权

US09247262B2 Absolute or explicit reference picture signaling 有权
标题翻译：绝对或明确的参考图片信号
公开(公告)号：US09247262B2
公开(公告)日：2016-01-26
申请号：US14127545
申请日：2012-04-27
申请人： Jonatan Samuelsson , Rickard Sjöberg
发明人： Jonatan Samuelsson , Rickard Sjöberg
IPC分类号： H04N19/433 , H04N19/51 , H04N19/70 , H04N19/46 , H04N19/61 , H04N19/89 , H04N19/573 , H04N19/58
CPC分类号： H04N19/433 , H04N19/46 , H04N19/573 , H04N19/58 , H04N19/61 , H04N19/70 , H04N19/89
摘要： An encoded representation (60) of a picture (10) of a video stream (1) is decoded by retrieving buffer description information identifying a buffer description defining multiple reference pictures (40, 42) of the video stream (1) from the encoded representation (60). A picture identifier of a reference picture (42) is determined based on picture identifier information retrieved from the buffer description for the reference picture (42) and a reference picture preceding the reference picture according to a list order in the buffer description. The determined picture identifier is used to update a decoded picture buffer (230, 350) that stores reference pictures (40, 42) to be used as decoding reference for the picture (10) and/or any subsequent picture (50) of the video stream (1).
摘要翻译：视频流（1）的图像（10）的编码表示（60）通过从编码表示中检索识别视频流（1）的多个参考图像（40,42）的缓冲器描述的缓冲器描述信息来解码（60）。根据缓冲器描述中的列表顺序，基于从参考图像（42）的缓冲器描述中获取的图像标识符信息和参考图像之前的参考图像来确定参考图像（42）的图像标识符。所确定的图像标识符用于更新存储参考图像（40,42）的解码图像缓冲器（230,350），以用作图像（10）的解码参考和/或视频的任何后续图像（50）流（1）。

26. 发明授权

US09100658B2 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：US09100658B2
公开(公告)日：2015-08-04
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 , 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。

27. 发明授权

US09071845B2 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：US09071845B2
公开(公告)日：2015-06-30
申请号：US13515140
申请日：2010-12-17
申请人： Zhuangfel Wu , Kenneth Andersson , Clinton Priddle , Thomas Rusert , Rickard Sjöberg
发明人： Zhuangfel Wu , Kenneth Andersson , Clinton Priddle , Thomas Rusert , Rickard Sjöberg
IPC分类号： H04N7/12 , H04N7/167 , 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 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。

28. 发明授权

US08897585B2 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：US08897585B2
公开(公告)日：2014-11-25
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： H04N19/553 , H04N19/80 , H04N19/105 , H04N19/176 , H04N19/61 , H04N19/51 , H04N19/11 , H04N19/593
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。

29. 发明申请

US20140064363A1 Decoders and Methods Thereof for Managing Pictures in Video Decoding Process 审中-公开
标题翻译：解码器及其在视频解码过程中管理图像的方法
公开(公告)号：US20140064363A1
公开(公告)日：2014-03-06
申请号：US13637242
申请日：2012-09-20
申请人： Jonatan Samuelsson , Rickard Sjöberg , Per Wennersten
发明人： Jonatan Samuelsson , Rickard Sjöberg , Per Wennersten
IPC分类号： H04N7/26 , H04N7/32
CPC分类号： H04N19/50 , H04N19/31 , H04N19/44 , H04N19/46
摘要： An object with the embodiments of the present invention is to make it well defined from which previously decoded picture to retrieve the values for calculating POC of the current picture regardless of how many temporal layers have been decoded.That is achieved by determining the POC of the current picture, to be used by the decoder, as a sum of a syntax element pic_order_cnt_lsb and a most significant bits of the POC, PicOrderCntMsb, of the current picture, wherein the PicOrderCntMsb of the current picture is derived using at least a prevPicOrderCntMsb and a prevPicOrderCntLsb and the prevPicOrderCntMsb is set equal to the most significant bits of the POC of a previous reference picture in decoding order that has a layer identity equal to zero and prevPicOrderCntLsb is set equal to the value of the least significant bits of the POC of a previous reference picture in decoding order that has a layer identity equal to zero.
摘要翻译：具有本发明的实施例的目的是使其从先前解码的图像中很好地定义，以检索用于计算当前图像的POC的值，而不管已经解码了多少时间层。这是通过将解码器使用的当前画面的POC确定为当前画面的语法元素pic_order_cnt_lsb和POC，PicOrderCntMsb的最高有效位的总和来实现的，其中当前画面的PicOrderCntMsb 使用至少一个prevPicOrderCntMsb和prevPicOrderCntLsb导出，并且将prevPicOrderCntMsb设置为等于先前参考图片的POC的最高有效位，其解码顺序具有等于零的层标识，并且将prevPicOrderCntLsb设置为等于解码顺序中先前参考图片的POC的最低有效位具有等于零的层标识。

30. 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。

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