Title :
Image processing using polarization-encoded optical shadow casting
Author :
Awwal, Abdul Ahad Sami ; Karim, Mohammad A.
Author_Institution :
Dept. of Electr. Eng., Dayton Univ., OH, USA
Abstract :
Two very powerful space-variant image processing operations (edge detection and median filtering) are realized using a polarization-encoded optical shadow-casting system. A novel spatial mask is used to detect image edges in all directions. The shadow-casting algorithm is utilized to determine the encodings for the input images to be processed. For illustration purposes, a binary image with edges in various orientations is considered as an input to the edge-detection system. The edge detector developed not only is a parallel processor but requires far fewer LEDs (two for unpolarized codes and one for polarized codes) than that of J. Tanida and Y. Ichioka (Appl. Opt., vol.27, p.2926, 1988)
Keywords :
filtering and prediction theory; light polarisation; optical information processing; picture processing; LEDs; algorithm; binary image; edge detection; encodings; median filtering; parallel processor; polarisation-encoded optical shadow-casting; space-variant image processing; spatial mask; Casting; Detectors; Filtering; Image coding; Image edge detection; Image processing; Light emitting diodes; Optical filters; Optical polarization; Optimized production technology;
Conference_Titel :
Aerospace and Electronics Conference, 1989. NAECON 1989., Proceedings of the IEEE 1989 National
Conference_Location :
Dayton, OH
DOI :
10.1109/NAECON.1989.40349
