Title :
Edge orientation enhancement using optoelectronic VLSI and asynchronous pulse coding
Author :
Apsel, Alyssa ; Kalayjian, Zaven K. ; Andreou, Andreas G. ; Simonis, George ; Chang, Wayne ; Datta, M. ; Koley, Bikash
Author_Institution :
Johns Hopkins Univ., Baltimore, MD, USA
Abstract :
We describe the implementation of one channel of an optoelectronic orientation enhancement algorithm based on a neurally inspired algorithm. An 8×8 VCSEL (Vertical Cavity Surface Emitting Laser) array, hybridized to CMOS driver circuits, transmits a contrast-enhanced image that would be computed in the early stages of visual processing. A diffractive optical element (DOE) generates a projective field which reinforces pixels of a preferred orientation. A CMOS receiver integrates correlated pulses to produce high output in frequently activated areas. Data from a one channel system shows orientation enhancement
Keywords :
CMOS integrated circuits; VLSI; diffractive optical elements; edge detection; image enhancement; image processing equipment; integrated optoelectronics; surface emitting lasers; CMOS driver circuits; VCSEL; asynchronous pulse coding; contrast-enhanced image; diffractive optical element; edge orientation enhancement; frequently activated areas; neurally inspired algorithm; one channel system; optoelectronic VLSI; projective field; visual processing; CMOS process; Driver circuits; Optical arrays; Optical diffraction; Optical receivers; Stimulated emission; Surface emitting lasers; US Department of Energy; Vertical cavity surface emitting lasers; Very large scale integration;
Conference_Titel :
Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on
Conference_Location :
Geneva
Print_ISBN :
0-7803-5482-6
DOI :
10.1109/ISCAS.2000.856320
