发明名称 |
Image signal coder operating at reduced spatial resolution |
摘要 |
An image processing system operates at reduced resolution to reduce computational complexity while remaining fully compatible with full resolution decoders. A video input signal is subsampled and encoded at the resulting lower resolution. The encoded signal is filled with zero terms to produce an encoded signal having the same number of terms as a full resolution encoded signal. In a motion-compensated hybrid coder, the decoder section also includes a subsampling system, so that the reconstructed video signal is produced at the same resulting lower resolution. The encoder section and the decoder section are each inverse functions of the other, eliminating a drift problem associated with prior systems.
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申请公布号 |
US5854858(A) |
申请公布日期 |
1998.12.29 |
申请号 |
US19950504631 |
申请日期 |
1995.06.07 |
申请人 |
GIROD, BERND;ERICSSON, STAFFAN |
发明人 |
GIROD, BERND;ERICSSON, STAFFAN |
分类号 |
G06F17/14;G06T9/00;H04N7/46;(IPC1-7):G06K9/36 |
主分类号 |
G06F17/14 |
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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