发明名称 |
Adaptive wavelet coding of hyperspectral imagery |
摘要 |
A hyperspectral image encoder (10) for compressing hyperspectral imagery includes a differential pulse code modulation (DPCM) loop (26) to perform data decorrelation in the spectral domain and a discrete wavelet transform (DWT) processing means (28) to perform decorrelation in the spatial domain. The DPCM loop (26) determines an error image between a present image at the input of the encoder (10) and a predicted image. The DWT processing means (28) then divides the error image into a plurality of frequency subbands and quantizes information within the subbands in accordance with a plurality of predetermined quantization states to provide a coded output signal. In one embodiment, an interband predictor (24) is provided to predict an image, for use in calculating the error image, using the coded output signal.
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申请公布号 |
US6539122(B1) |
申请公布日期 |
2003.03.25 |
申请号 |
US19980050293 |
申请日期 |
1998.03.30 |
申请人 |
GENERAL DYNAMICS DECISION SYSTEMS, INC. |
发明人 |
ABOUSLEMAN GLEN PATRICK |
分类号 |
G06T9/00;(IPC1-7):G06K9/36 |
主分类号 |
G06T9/00 |
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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