Title :
A Parallel Analog CMOS Signal Processor for Image Contrast Enhancement
Author :
Shimmi, T. ; Kobayashi, H. ; Yagi, T. ; Sawaji, T. ; Matsumoto, T. ; Abidi, A.A.
Author_Institution :
Dept. of Electr. Eng., Waseda Univ., Tokyo, Japan
Abstract :
A 2D analog CMOS network with a 53 × 52 array of embedded photosensors implements a convolution function approximating the Laplacian of a Gaussian. Experimental results verify that high quality contrast enhancement of images of simple objects may be obtained in analog circuits with careful circuit design. The 7.9 × 9.2 mm IC dissipates 350 mW from a 5 V power supply.
Keywords :
CMOS analogue integrated circuits; Gaussian processes; convolution; image enhancement; integrated circuit design; photodetectors; Gaussian process; IC; analog circuit design; convolution function; embedded photosensors; image contrast enhancement; parallel analog CMOS signal processor; power 350 mW; power supply; voltage 5 V; Buffer storage; CMOS process; Circuits; Convolution; Filters; MOSFETs; Photoconductivity; Power supplies; Signal processing; Voltage;
Conference_Titel :
Solid-State Circuits Conference, 1992. ESSCIRC '92. Eighteenth European
Conference_Location :
Copenhagen
Print_ISBN :
87-984232-0-7
DOI :
10.1109/ESSCIRC.1992.5468271
