发明名称 |
In image compression, selecting field or frame discrete wavelet transformation based on entropy, power, or variances from the high frequency subbands |
摘要 |
A frame DWT unit makes subband segmentation of input moving image data in units of frames. Also, a field DWT unit makes subband segmentation of input moving image data in units of fields. First subbands obtained by the frame DWT unit undergo an arithmetic process, and a discrimination unit (104) determines based on a first arithmetic value obtained by the arithmetic process if the frame or field DWT unit is applied to the input moving image data.
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申请公布号 |
US6847736(B2) |
申请公布日期 |
2005.01.25 |
申请号 |
US20010816453 |
申请日期 |
2001.03.26 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
ITOKAWA OSAMU |
分类号 |
G06K9/32;G06T9/00;H04N7/26;(IPC1-7):G06K9/36 |
主分类号 |
G06K9/32 |
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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