23 March 1998 Grayscale optical correlator
Author Affiliations +
A compact (Camcorder size), ultrahigh-speed, grayscale optical correlator capable of using grayscale input and real-valued correlation filter is reported. The unique bipolar-amplitude correlation filter modulation capability has enabled the direct implementation of composite filter algorithm such as MACH[8]. The direct usage of grayscale input also eliminated the need of image preprocessing (e.g. Sobel filtering used for binary optical correlator). System architecture of this grayscale optical correlator will be described. Experimental results obtained using optically implemented MACH filter, for the first time, will also be provided.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Tien-Hsin Chao, Tien-Hsin Chao, George F. Reyes, George F. Reyes, Youngchul Park, Youngchul Park, } "Grayscale optical correlator", Proc. SPIE 3386, Optical Pattern Recognition IX, (23 March 1998); doi: 10.1117/12.304790; https://doi.org/10.1117/12.304790


Back to Top