发明授权
US06307887B1 Video encoder and decoder using bilinear motion compensation and lapped orthogonal transforms
有权
视频编码器和解码器采用双线性运动补偿和重叠正交变换
- 专利标题: Video encoder and decoder using bilinear motion compensation and lapped orthogonal transforms
- 专利标题(中): 视频编码器和解码器采用双线性运动补偿和重叠正交变换
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申请号: US09583214申请日: 2000-05-30
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公开(公告)号: US06307887B1公开(公告)日: 2001-10-23
- 发明人: Steven A. Gabriel
- 申请人: Steven A. Gabriel
- 主分类号: H04N712
- IPC分类号: H04N712
摘要:
A method and system for improved motion compensation between a previous frame of video information and a new frame. Each block of pixels in a block-based compression scheme uses four vectors, three from proximate blocks, to determine motion-induced changes to its pixels. The vectors are interpolated for each pixel based on the location of the pixel in the block with respect to the vectors. The address of each pixel in the frame block of the previous frame is altered based on the resultant vector determined therefor, whereby a color value for the new pixel is obtained from the altered address. Sharp contrasts at the edges between blocks are eliminated due to the gradual blending obtained by using vectors of the adjacent blocks to determine a pixel's color.
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