公开(公告)号：US11343526B2

公开(公告)日：2022-05-24

申请号：US17137280

申请日：2020-12-29

申请人： Realtek Semiconductor Corp.

发明人： Yanting Wang ,  Guangyu San

IPC分类号： H04N19/513 ,  H04N19/18 ,  H04N19/176 ,  H04N19/139

摘要： A video processing method includes dividing a current frame into a plurality of blocks, generating a motion vector of each block of the plurality of blocks of the current frame according to the each block of the current frame and a corresponding block of a previous frame, generating a global motion vector according to a plurality of motion vectors of the current frame, generating a sum of absolute differences of pixels of each block of the current frame according to the global motion vector, generating a region with a set of blocks of the current frame, matching a distribution of the sum of absolute differences of pixels of the region with a plurality of models, identifying a best matching model, and labeling each block in the region in the current frame with a label of either a foreground block or a background block according to the best matching model.

公开(公告)号：US11122291B2

公开(公告)日：2021-09-14

申请号：US16792897

申请日：2020-02-18

申请人： Realtek Semiconductor Corp.

发明人： Guangyu San ,  Yanting Wang

IPC分类号： H04N19/56 ,  H04N19/513 ,  H04N19/57 ,  H04N19/176 ,  G06T7/254 ,  G06T7/215

摘要： An apparatus and a method for motion estimation of isolated objects are provided. The apparatus includes a dividing circuit, a flag circuit, an analyzing circuit, a calculating circuit and a determination circuit. The dividing circuit divides each of a first image and a second image into a plurality of blocks. The flag circuit adds a flag to each block within the blocks having image information different from background information. The analyzing circuit analyzes continuity of the flag to find a target isolated object having a size less than or equal to a predetermined size. The calculating circuit obtains an initial motion vector of the target isolated object according to locations of the target isolated object in the first image and the second image. The determination circuit determines whether the initial motion vector is correct according to a sum of absolute differences corresponding to the initial motion vector.