The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 14, 1999
Filed:
Oct. 26, 1994
William M Silver, Medfield, MA (US);
Nigel J Foster, Brookline, MA (US);
Cyril C Marrion, Jr, Acton, MA (US);
Cognex Corporation, Natick, MA (US);
Abstract
A machine vision system for finding an angle object orientation, or other characteristic, of an object in an image. The system determines the boundary pixels, determines the segment orientation angles associated with each successive segment of n boundary pixels, assigns a weight to each angle, generates a histogram of the angles according to their weights, normalizes the histogram to an angle range covering 90.degree., and generates a signal representing the angle corresponding to a selected peak in the histogram. In one embodiment, the system interpolates between neighboring pixels across the boundary to obtain a grey-scale boundary of sub-pixel accuracy.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile