Optical Wavelet Processor by Holographic bipolar encoding and Joint Transform Correlation

Katsuhisa Hirokawa, Kazuyoshi Itoh, and Yoshiki Ichioka

A novel optical wavelet processor based on the techniques of the joint transform correlator and computer generated holograms is proposed. A coding technique that is a simplified version of Lee's hologram[Appl. Opt. 9, 693 (1070)] is used to represent positive and negative values for an object signal and wavelet functions. We experimentally demonstrate that all the requisite wavelet transforms of the different daughter wavelet functions can be simultaneously obtained by arranging appropriately the daughter wavelet functions and the object signal on the input plane.

Appl. Opt., 36, 1023 (1997).