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:
Sep. 30, 1997
Filed:
Dec. 27, 1994
Applicant:
Inventor:
Masahide Nomura, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S / ;
U.S. Cl.
CPC ...
364516 ; 348700 ; 348701 ;
Abstract
An image processing method for processing a sequence of motion images in the form of brightness patterns and picked up by a camera. The brightness patterns are applied to a spatiotemporal filtering differentiator having a plurality of initial phases thereof different from each other to obtain a set of local differential values grouped by the initial phases. The differential values are calculated to obtain a set of local brightness gradients.