Title :
10 mW CMOS retina and classifier for handheld, 1000 images/s optical character recognition system
Author :
Masa, Pavel ; Heim, P. ; Franzi, E. ; Arreguit, X. ; Heitger, F. ; Ruedi, P.F. ; Nussbaum, P. ; Piiloud, P. ; Vittoz, E.
Author_Institution :
Centre Suisse d´Electron. et de Microtech. SA, Neuchatel, Switzerland
Abstract :
The optical character-recognition (OCR) system described consists of a CMOS retina, an analog classifier IC and a microcontroller. The retina converts the parallel optical input into an oriented edge representation which is processed further and recognized by the classifier in real-time. The microcontroller postprocesses the time sequence of classifier outputs and provides timing and control. The system can be used as a handheld OCR scanner which processes the field of view 1000 times per second. The system output is the character string being scanned.
Keywords :
CMOS analogue integrated circuits; analogue processing circuits; edge detection; image classification; optical character recognition; optical scanners; 10 mW; CMOS classifier; CMOS retina; analog classifier IC; handheld OCR scanner; microcontroller; optical character recognition system; oriented edge representation; parallel optical input; system output; time sequence; timing; Capacitors; Character recognition; High speed optical techniques; Information processing; Neural networks; Optical arrays; Optical character recognition software; Pixel; Retina; Solid state circuits;
Conference_Titel :
Solid-State Circuits Conference, 1999. Digest of Technical Papers. ISSCC. 1999 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-5126-6
DOI :
10.1109/ISSCC.1999.759194
