Title :
An active resistor network for Gaussian filtering of images
Author :
Kobayashi, Haruo ; White, Joseph L. ; Abidi, Asad A.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
fDate :
5/1/1991 12:00:00 AM
Abstract :
The architecture of an active resistive mesh containing both positive and negative resistors to implement a Gaussian convolution in two dimensions is described. With an embedded array of photoreceptors, this may be used for image detection and smoothing. The convolution width is continuously variable by 2:1 under user control. Analog circuits implement a 45×40 mesh on a 2-μm CMOS integrated circuit, and perform an entire convolution in 20 μs on applied images
Keywords :
CMOS integrated circuits; analogue computer circuits; computer vision; computerised picture processing; image sensors; linear integrated circuits; 2 micron; 2D signal processing; CMOS integrated circuit; Gaussian convolution; Gaussian filtering; active resistor network; analogue circuits; embedded array; image detection; image smoothing; machine vision; negative resistors; photoreceptors; resistive mesh; Biomedical signal processing; CMOS analog integrated circuits; Convolution; Filtering; Hardware; Image recognition; Resistors; Signal processing; Signal processing algorithms; Smoothing methods;
Journal_Title :
Solid-State Circuits, IEEE Journal of
