公开(公告)号：US07242815B2

公开(公告)日：2007-07-10

申请号：US10760873

申请日：2004-01-20

申请人： Ossi Kalevo ,  Marta Karczewicz

发明人： Ossi Kalevo ,  Marta Karczewicz

IPC分类号： G06T5/00 ,  G06K9/40 ,  H04N5/21

CPC分类号： H04N19/86 ,  H04N19/117 ,  H04N19/134 ,  H04N19/137 ,  H04N19/14 ,  H04N19/176 ,  H04N19/182 ,  H04N19/527 ,  H04N19/60 ,  H04N19/61 ,  H04N19/82

摘要： In order to remove blocking artefacts from a frame which has been coded by blocks and then decoded, a certain number of pixels (n) is selected for examination from both sides of the block boundary (30). The number of pixels selected for examination depends on the image content of the frame in the environment of the block boundary, particularly on the difference of the pixel values across the block boundary (30) and the size of the quantization step of the transformation coefficients used in the transformation coding of the blocks.

摘要翻译： 为了从已经由块编码并随后解码的帧中去除块的伪像，从块边界（30）的两侧选择一定数量的像素（n）进行检查。 选择用于检查的像素的数量取决于块边界环境中的帧的图像内容，特别是关于块边界（30）上的像素值的差异以及所使用的变换系数的量化步长的大小 在块的变换编码中。

公开(公告)号：US09800891B2

公开(公告)日：2017-10-24

申请号：US09766035

申请日：2001-01-19

申请人： Ossi Kalevo ,  Emre Aksu ,  Marta Karczewicz

发明人： Ossi Kalevo ,  Emre Aksu ,  Marta Karczewicz

IPC分类号： H04N7/12 ,  H04N19/527 ,  H04N19/86

CPC分类号： H04N19/527 ,  H04N19/86

摘要： A method for reducing visual artifacts in a frame of a digital video signal, which is coded by blocks and then decoded, includes defining a block type is according to the coding method for a block selected according to a predetermined set of coding types. In the method filtering is performed to reduce visual artifacts due to a block boundary The filtering performed depends on block types of the frame in the environment of the block boundary.

公开(公告)号：US06724944B1

公开(公告)日：2004-04-20

申请号：US09380918

申请日：2000-01-18

申请人： Ossi Kalevo ,  Marta Karczewicz

发明人： Ossi Kalevo ,  Marta Karczewicz

IPC分类号： G06T500

CPC分类号： H04N19/86 ,  H04N19/117 ,  H04N19/134 ,  H04N19/137 ,  H04N19/14 ,  H04N19/176 ,  H04N19/182 ,  H04N19/527 ,  H04N19/60 ,  H04N19/61 ,  H04N19/82

摘要： In order to remove blocking artifacts from a frame which has been coded by blocks and then decoded, a certain number of pixels (n) is selected for examination from both sides of the block boundary (30). The number of pixels selected for examination depends on the image content of the frame in the environment of the block boundary, particularly on the difference of the pixel values across the block boundary (30) and the size of the quantization step of the transformation coefficients used in the transformation coding of the blocks.

摘要翻译： 为了从已被块编码并随后解码的帧中去除块伪影，从块边界（30）的两侧选择一定数量的像素（n）进行检查。 选择用于检查的像素的数量取决于块边界环境中的帧的图像内容，特别是关于块边界（30）上的像素值的差异以及所使用的变换系数的量化步长的大小 在块的变换编码中。

公开(公告)号：US11496760B2

公开(公告)日：2022-11-08

申请号：US13553617

申请日：2012-07-19

申请人： Ying Chen ,  Marta Karczewicz

发明人： Ying Chen ,  Marta Karczewicz

IPC分类号： H04N19/44 ,  H04N19/597 ,  H04N19/70 ,  H04N19/172 ,  H04N19/46 ,  H04N19/61 ,  H04N19/174

摘要： In one example, a video coder is configured to code a first slice, wherein the first slice comprises one of a texture slice and a corresponding depth slice, wherein the first slice has a slice header comprising complete syntax elements representative of characteristics of the first slice. The video coder is further configured to determine common syntax elements for a second slice from the slice header of the first slice. The video coder is also configured to code the second slice after coding the first slice at least partially based on the determined common syntax elements, wherein the second slice comprises one of the texture slice and the depth slice that is not the first slice, wherein the second slice has a slice header comprising syntax elements representative of characteristics of the second slice, excluding values for syntax elements that are common to the first slice.

公开(公告)号：US10298939B2

公开(公告)日：2019-05-21

申请号：US13529508

申请日：2012-06-21

申请人： Muhammed Zeyd Coban ,  Marta Karczewicz ,  In Suk Chong ,  Xianglin Wang

发明人： Muhammed Zeyd Coban ,  Marta Karczewicz ,  In Suk Chong ,  Xianglin Wang

IPC分类号： H04N7/40 ,  H04N7/32 ,  H04N19/196 ,  H04N19/105 ,  H04N19/176 ,  H04N19/61 ,  H04N19/463 ,  H04N19/90 ,  H04N19/426

摘要： In an example, aspects of this disclosure relate to a method of coding video data that includes identifying a plurality of quantization parameter (QP) values associated with a plurality of reference blocks of video data. The method also includes generating a reference QP for the plurality of reference blocks based on the plurality of QPs. The method also includes storing the reference QP, and coding a block of video data based on the stored reference QP.

公开(公告)号：US10237565B2

公开(公告)日：2019-03-19

申请号：US13561754

申请日：2012-07-30

申请人： Ying Chen ,  Marta Karczewicz ,  Ye-Kui Wang

发明人： Ying Chen ,  Marta Karczewicz ,  Ye-Kui Wang

IPC分类号： H04N19/37 ,  H04N19/40 ,  H04N13/00 ,  H04N21/2343 ,  H04N19/70 ,  H04N19/186 ,  H04N19/39 ,  H04N13/161

摘要： In one example, a device for coding video data includes a video coder configured to code, for a bitstream, information representative of which of a plurality of video coding dimensions are enabled for the bitstream, and code values for each of the enabled video coding dimensions, without coding values for the video coding dimensions that are not enabled, in a network abstraction layer (NAL) unit header of a NAL unit comprising video data coded according to the values for each of the enabled video coding dimensions. In this manner, NAL unit headers may have variable lengths, while still providing information for scalable dimensions to which the NAL units correspond.

公开(公告)号：US09807424B2

公开(公告)日：2017-10-31

申请号：US13311834

申请日：2011-12-06

申请人： Liwei Guo ,  Peisong Chen ,  Marta Karczewicz

发明人： Liwei Guo ,  Peisong Chen ,  Marta Karczewicz

IPC分类号： H04N7/32 ,  H04N19/86 ,  H04N19/159 ,  H04N19/176 ,  H04N19/117 ,  H04N19/127 ,  H04N19/17 ,  H04N19/80

CPC分类号： H04N19/86 ,  H04N19/117 ,  H04N19/127 ,  H04N19/159 ,  H04N19/17 ,  H04N19/176 ,  H04N19/80

摘要： During a video encoding or decoding process, a predicted prediction block is generated for a CU. The CU may have two or more prediction units (PUs). A computing device selects a neighbor region size. After the computing device selects the neighbor region size, samples in a transition zone of the prediction block are identified. Samples associated with a first PU are in the transition zone if neighbor regions that contain the samples also contain samples associated with a second PU. Samples associated with the second PU may be in the transition zone if neighbor regions that contain the samples also contain samples associated with the first PU. The neighbor regions have the selected neighbor region size. A smoothing operation is then performed on the samples in the transition zone.

公开(公告)号：US09736489B2

公开(公告)日：2017-08-15

申请号：US13585423

申请日：2012-08-14

申请人： Xianglin Wang ,  Yunfei Zheng ,  Vadim Seregin ,  Marta Karczewicz

发明人： Xianglin Wang ,  Yunfei Zheng ,  Vadim Seregin ,  Marta Karczewicz

IPC分类号： H04N19/436 ,  H04N19/52

CPC分类号： H04N19/436 ,  H04N19/52

摘要： For each prediction unit (PU) belonging to a coding unit (CU), a video coder generates a candidate list. The video coder generates the candidate list such that each candidate in the candidate list that is generated based on motion information of at least one other PU is generated without using motion information of any of the PUs belonging to the CU. After generating the candidate list for a PU, the video coder generates a predictive video block for the PU based on one or more reference blocks indicated by motion information of the PU. The motion information of the PU is determinable based on motion information indicated by a selected candidate in the candidate list for the PU.

公开(公告)号：US09699456B2

公开(公告)日：2017-07-04

申请号：US13550377

申请日：2012-07-16

申请人： Wei-Jung Chien ,  Yunfei Zheng ,  Xianglin Wang ,  Marta Karczewicz ,  Liwei Guo

发明人： Wei-Jung Chien ,  Yunfei Zheng ,  Xianglin Wang ,  Marta Karczewicz ,  Liwei Guo

IPC分类号： H04N7/26 ,  H04N7/32 ,  H04N19/11 ,  H04N19/159 ,  H04N19/176 ,  H04N19/147 ,  H04N19/46 ,  H04N19/51 ,  H04N19/593

CPC分类号： H04N19/11 ,  H04N19/147 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/51 ,  H04N19/593

摘要： In an example, aspects of this disclosure relate to a method of coding video data that generally includes determining prediction information for a block of video data, where the block is included in a coded unit of video data and positioned below a top row of above-neighboring blocks in the coded unit, and where the prediction information for the block is based on prediction information from one or more other blocks in the coded unit but not based on prediction information from any of the top row of blocks in the coded unit. The method also generally includes coding the block based on the determined prediction information.

公开(公告)号：US09654776B2

公开(公告)日：2017-05-16

申请号：US13013706

申请日：2011-01-25

申请人： Peisong Chen ,  Xianglin Wang ,  Marta Karczewicz

发明人： Peisong Chen ,  Xianglin Wang ,  Marta Karczewicz

IPC分类号： H04N19/119 ,  H04N19/52 ,  H04N19/122 ,  H04N19/137 ,  H04N19/17 ,  H04N19/537 ,  H04N19/543

CPC分类号： H04N19/615 ,  H04N19/119 ,  H04N19/122 ,  H04N19/137 ,  H04N19/17 ,  H04N19/174 ,  H04N19/176 ,  H04N19/513 ,  H04N19/52 ,  H04N19/537 ,  H04N19/543 ,  H04N19/66

摘要： In one example, an apparatus includes a video encoder configured to partition a block of video data into a first geometric partition and a second geometric partition using a geometric motion partition line, wherein the block comprises N×N pixels, divide the block of video data into four equally-sized, non-overlapping (N/2)×(N/2) sub-blocks, and encode at least one of the sub-blocks through which the geometric motion partition line passes using a transform size smaller than (N/2)×(N/2). The video encoder may determine transform sizes for the sub-blocks based on whether the geometric motion partition line passes through the sub-blocks. In one example, a video decoder may inverse transform the sub-blocks, and may determine transform sizes for the sub-blocks based on whether the geometric motion partition line passes through the sub-blocks.