发明名称 |
LOW NOISE ENCODING AND DECODING METHOD |
摘要 |
An adaptive digital image processor (22) precedes an MPEG2 encoder (24). The processor receives a high definition (1920 by 1080 pixels per image) video signal intended for broadcast or storage, and adaptively low-pass filters the signal. The signal is subjected to low-pass two-dimensional filtering (223) to eliminate encoding artifacts and related noise. The video signal is then horizontally down-sampled (226) to create a lower resolution hybrid signal (1280 by 1080 pixels per image). A receiver decodes and decompresses the hybrid signal. The hybrid signal is upsampled to its original resolution using existing hardware and software with a software modification.
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申请公布号 |
CA2315016(A1) |
申请公布日期 |
1999.07.01 |
申请号 |
CA19972315016 |
申请日期 |
1997.12.23 |
申请人 |
THOMSON LICENSING S.A. |
发明人 |
YU, HAOPING;MCNEELY, DAVID LOWELL;BEYERS, BILLY WESLEY JR. |
分类号 |
H04N5/14;H04N5/44;H04N7/26;H04N7/30;H04N7/46;H04N7/50;(IPC1-7):H04N7/26 |
主分类号 |
H04N5/14 |
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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