1 September 1992 Optical wavelet transform
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Optical Engineering, 31(9), (1992). doi:10.1117/12.59916
Abstract
The wavelet transform is implemented using an optical multichannel correlator with a bank of wavelet transform filters. This approach provides a shift-invariant wavelet transform with continuous translation and discrete dilation parameters. The wavelet transform filters can be in many cases simply optical transmittance masks. Experimental results show detection of the frequency transition of the input signal by the optical wavelet transform.
Yunlong Sheng, Danny Roberge, Harold H. Szu, "Optical wavelet transform," Optical Engineering 31(9), (1 September 1992). https://doi.org/10.1117/12.59916
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