公开(公告)号：WO2023274074A1

公开(公告)日：2023-01-05

申请号：PCT/CN2022/101189

申请日：2022-06-24

申请人： ZHEJIANG DAHUA TECHNOLOGY CO., LTD.

发明人： ZHANG, Xue ,  FANG, Cheng ,  JIANG, Dong ,  LIN, Jucai ,  YIN, Jun

IPC分类号： H04N19/82 ,  H04N19/85 ,  G06N3/08 ,  H04N19/463

摘要： The present disclosure provides systems and methods for image filtering. The method may include obtaining an initial image block from a reconstructed image; determining at least one candidate image block by performing a filtering operation on the initial image block using at least one trained machine learning model; and determining a target image block based on the at least one candidate image block.

公开(公告)号：WO2022174685A1

公开(公告)日：2022-08-25

申请号：PCT/CN2021/143872

申请日：2021-12-31

申请人： ZHEJIANG DAHUA TECHNOLOGY CO., LTD.

发明人： ZHANG, Xue ,  JIANG, Dong ,  LIN, Jucai ,  YIN, Jun

IPC分类号： H04N19/184 ,  H04N19/186 ,  H04N19/42

摘要： The present disclosure relates to systems and methods for image compensation. The systems may obtain a reconstructed image frame. The systems may determine a primary classification manner of pixels in the reconstructed image frame. The systems may determine a primary compensation value of each category of pixels in the reconstructed image frame that are classified based on the primary classification manner. The systems may obtain a compensated image frame by compensating the reconstructed image frame based on the primary compensation value of each category of pixels in the reconstructed image frame.

公开(公告)号：WO2022267569A1

公开(公告)日：2022-12-29

申请号：PCT/CN2022/081024

申请日：2022-03-15

申请人： ZHEJIANG DAHUA TECHNOLOGY CO., LTD.

发明人： ZHANG, Xue ,  JIANG, Dong ,  LIN, Jucai ,  YIN, Jun

IPC分类号： H04N19/169 ,  H04N19/176

摘要： The present disclosure relates to systems and methods for block division and encoding in video processing. A method may include obtaining a block to be predicted in an image frame. The method may also include determining, based on a plurality of division modes of the block, a target division mode of the block. The plurality of division modes may include an equal division mode that is configured to divide the block into multiple sub-blocks with a same size. The method may further include dividing, based on the target division mode, the block into a plurality of sub-blocks, and encoding the block based on the plurality of sub-blocks.

公开(公告)号：WO2022174773A1

公开(公告)日：2022-08-25

申请号：PCT/CN2022/076540

申请日：2022-02-17

申请人： ZHEJIANG DAHUA TECHNOLOGY CO., LTD.

发明人： ZHANG, Xue ,  JIANG, Dong ,  NIAN, Chunmei ,  LIN, Jucai ,  YIN, Jun

IPC分类号： H04N19/82 ,  H04N19/80 ,  H04N19/103

摘要： The present disclosure may relate to a system and a method for video coding. The method may include determining at least one classification mode of a first component of a first pixel for a block in an image frame based on at least one pixel value of at least one second component of at least one second pixel that surrounds the first pixel. The method may also include generating a target classification result by classifying the first component based on at least a portion of the at least one classification mode. The method may also include compensating the first component based on an optimal compensation value of the target classification result.

公开(公告)号：WO2022117113A1

公开(公告)日：2022-06-09

申请号：PCT/CN2021/135831

申请日：2021-12-06

申请人： ZHEJIANG DAHUA TECHNOLOGY CO., LTD.

发明人： JIANG, Dong ,  FANG, Cheng ,  ZHANG, Xue ,  LIN, Jucai ,  YIN, Jun

IPC分类号： H04N19/105 ,  H04N19/182

摘要： The present disclosure relates to systems and methods for video encoding. The systems may determine a current string in a coding unit (CU) of an image frame. The current string may include one or more pixels. The systems may determine, based on a first pixel in the current string, a reference matching pixel of the first pixel by searching a searching area. The searching area may include a plurality of matching pixels The systems may determine, based on the reference matching pixel and matching patterns, a count of matching pixels in each of a plurality of groups, corresponding to the matching patterns, of the current string. The systems may further determine, based on counts of matching pixels in the plurality of groups corresponding to the matching patterns, a target prediction of the current string.

公开(公告)号：WO2022117104A1

公开(公告)日：2022-06-09

申请号：PCT/CN2021/135660

申请日：2021-12-06

申请人： ZHEJIANG DAHUA TECHNOLOGY CO., LTD.

发明人： FANG, Cheng ,  JIANG, Dong ,  ZHANG, Xue ,  CHEN, Yao ,  LIN, Jucai ,  YIN, Jun

IPC分类号： H04N19/105

摘要： The present disclosure relates to systems and methods for video encoding. The systems may determine a current string in a coding unit (CU) of an image frame. The current string may include one or more pixels. The systems may determine a first cost based on pixels with a same pixel value in the current string. The systems may determine a second cost based on one or more strings that are located above the current string. The systems may further determine a prediction string of the current string based on the first cost and the second cost. To determine the prediction string of the current string based on the first cost and the second cost, the systems may designate the current string as the prediction string of the current string in response to that the first cost and the second cost are not determined.