发明名称 |
A TRANSFORM ARTIFACT REDUCTION PROCESS |
摘要 |
A post-processor for a decoded video sequence includes a digital noise reduction unit and an artifact reduction unit which significantly reduce blocking artifacts and mosquito noise in a video image. The post-processor uses both temporal and edge characteristics of the video image to enhance the displayed image. The post-processor operates on a current frame of pixel data using information from the immediately preceding post-processed frame that is stored in a frame memory of the post-processor. The post-processor first identifies texture and fine detail areas in the image. The post-processor uses artifact reduction only on portions of the image that are not part of an edge, and are not part of a texture or fine detail area. Since artifact reduction is not utilized on these areas, the post-processed image is not softened in regions where it is easily noticed by the human eye. |
申请公布号 |
WO9642165(A2) |
申请公布日期 |
1996.12.27 |
申请号 |
WO1996US08290 |
申请日期 |
1996.06.05 |
申请人 |
COMPRESSION LABS, INC. |
发明人 |
GUPTA, SMITA;TSE, YI, TONG |
分类号 |
G06T5/20;G06T9/00;H04N7/26;H04N7/30 |
主分类号 |
G06T5/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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