发明名称 |
System for deriving a decoded reduced-resolution video signal from a coded high-definition video signal |
摘要 |
A system for decoding compressed image data in the form of pixel blocks representing an image of a first resolution to provide an image of a reduced second resolution decompresses a pixel block of the first resolution image. The system involves selecting (204) a sub-set of frequency domain coefficients in the compressed pixel block data, and processing elements (204,205,206,208) of the sub-set of coefficients to provide pixel data representing pixels comprising a spatially distributed sub-set of pixels in the pixel block in the first resolution image and excludes other pixels of the pixel block. The pixel data representing pixels comprising the spatially distributed pixels is formatted (210) to provide the reduced second resolution image. <IMAGE> |
申请公布号 |
SG75179(A1) |
申请公布日期 |
2000.09.19 |
申请号 |
SG19990003208 |
申请日期 |
1999.07.05 |
申请人 |
THOMSON CONSUMER ELECTRONICS, INC. |
发明人 |
COMER MARY LAFUZE;CARLSGAARD ERIC STEPHEN;HORLANDER THOMAS EDWARD;BARRON STEVEN ANTHONY |
分类号 |
H04N5/45;G06T3/40;H03M7/30;H04N7/26;H04N7/30;H04N7/46;H04N7/50;(IPC1-7):H04N7/26 |
主分类号 |
H04N5/45 |
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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