An optical system utilizing the photoinduced dichroism in a bacteriorhodopsin film has been demonstrated for the optical implementation of wavelet transforms. The dichroism, induced by the image of a wavelet filter on a bacteriorhodopsin film leads to polarization rotation of the Fourier components of an image. The polarization-rotated Fourier components of an input scene are analyzed with a polarizer to give the wavelet transform components. The dichroism is induced with beams whose profiles are determined by wavelet filters in order to perform the optical wavelet transform.
Joseph, Joby; Aranda, F. J.; Rao, D.V.G.L.N.; DeCristofano, B. S.; Kimball, B. R.; and Nakashima, M., "Optical implementation of the wavelet transform by using a bacteriorhodopsin film as an optically addressed spatial light modulator" (1998). Physics Faculty Publications. 29.
American Institute of Physics
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