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

Volume

26

Issue

5

fYear

1991

fDate

5/1/1991 12:00:00 AM

Firstpage

738

Lastpage

748

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;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/4.78244

Filename

78244