An optical implementation of a wavelet transform is presented. Optical Haar wavelets are created by the use of computer-generated holography. Two different holographic techniques are explored: (1) interferogram and (2) detour-phase. A discrete representation of a continuous wavelet transform is obtained by the optical correlation of an image with a Haar mother wavelet. Experimental results are compared with their digital simulations.
© 1994 Optical Society of America
Peter G. Block, Steven K. Rogers, and Dennis W. Ruck, "Optical wavelet transforms from computer-generated holography," Appl. Opt. 33, 5275-5278 (1994)