Real-time measurement of corner position in binary images

Author

Gaiarsa, Andrew E. ; Capson, David W.

Author_Institution

Bell-Northern Res., Nepean, Ont., Canada

Volume

43

Issue

4

fYear

1994

fDate

8/1/1994 12:00:00 AM

Firstpage

567

Lastpage

577

Abstract

The design and testing of an efficient method for measurement of the location of corners of binary regions in digital images is described. From a single perspective image, the image coordinates of corner points are obtained from moments and intersection points accumulated within specified windows. Corner-point coordinates may then be used in further processing such as inverse photogrammetric solutions to determine 3D position. A video-processing board based on a TMS 320C25 DSP chip has been developed to process the image windows. Together with an 80386-based single-board computer, object corner location is achieved at the standard RS-170 television field rate of 60 Hz

Keywords

computer vision; edge detection; image processing equipment; position measurement; real-time systems; 3D position; 60 Hz; 80386-based single-board computer; RS-170 television field rate; TMS 320C25 DSP chip; binary images; binary regions; corner position; corner-point coordinates; design; digital images; image coordinates; image windows; intersection points; inverse photogrammetric solutions; moments; object corner location; real-time measurement; robot guidance; testing; video tracking; video-processing board; workpiece location; Automotive engineering; Biomedical measurements; Cameras; Computer aided manufacturing; Digital images; Digital signal processing chips; Position measurement; Robot kinematics; Robotic assembly; Testing;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.310170

Filename

310170