Oversampled optical subband decomposition

Zikuan Chen; Mohammad A. Karim

doi:10.1117/1.1287993

1 September 2000 Oversampled optical subband decomposition

Zikuan Chen, Mohammad A. Karim

Optical Engineering, Vol. 39, Issue 9, (September 2000). https://doi.org/10.1117/1.1287993

A semidiscrete wavelet transform is realized using optical subband decomposition through which a signal is decomposed into translation-invariant subbands. Correspondingly, the translation parameter within each subband is discretized using a CCD array. since the sampling lattice of a CCD array is fixed, the subband signals can be oversampled, critically sampled, or undersampled. The oversampled subband signals contribute to reduced translation dependence and improved robustness. In the presence of additive noise, we show that oversampling reduces the reconstruction error.

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Zikuan Chen and Mohammad A. Karim "Oversampled optical subband decomposition," Optical Engineering 39(9), (1 September 2000). https://doi.org/10.1117/1.1287993

Published: 1 September 2000

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