发明授权
- 专利标题： Error concealment apparatus for video signal processors
- 专利标题（中）： 视频信号处理器的错误隐藏装置
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申请号： US4358申请日： 1993-01-14
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公开(公告)号： US5365604A公开(公告)日： 1994-11-15
- 发明人: Wilson Kwok , Huifang Sun
- 申请人： Wilson Kwok , Huifang Sun
- 申请人地址： NJ Princeton
- 专利权人： RCA Thomson Licensing Corporation
- 当前专利权人： RCA Thomson Licensing Corporation
- 当前专利权人地址： NJ Princeton
- 主分类号： H03M13/00
- IPC分类号： H03M13/00 ; H04N5/92 ; H04N5/94 ; H04N19/895 ; G06K9/40
摘要：
Error concealment apparatus for correcting errors in signals representing video images includes means for detecting image gradients in an area surrounding a lost block of image data. Circuitry responsive to these image gradients generates a plurality of blocks of directionally interpolated pixel values. The pixel values in the respective blocks of directionally interpolated pixel values are sorted according to amplitude, and then pixel values from mutually exclusive positions in the respective blocks are selected to form a block of pixel values for error concealment.
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