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.

Date of Patent:
Apr. 06, 2004

Filed:

Mar. 09, 2000
Applicant:
Inventors:

Noriyuki Matsumoto, Nagoya, JP;

Taizo Umezaki, Tajimi, JP;

Akihito Kimura, Nagoya, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/00 ;
U.S. Cl.
CPC ...
G06K 9/00 ;
Abstract

A minute amplitude value emphasis device has Fourier transformation devices which treat a two-dimensional original pictorial image with a Fourier transformation to determine Fourier coefficients in x-axis and y-axis directions. Weight devices emphasize the respective Fourier coefficients in the corresponding directions so as to produce weighted Fourier coefficients. Inverse Fourier transformation devices treat the weighted Fourier coefficients with an inverse Fourier transformation in two directions to determine the corresponding minute amplitude value emphasis data . A synthesizing device synthesizes the corresponding minute amplitude value emphasis data to produce a minute amplitude value emphasis image . An obscure portion of the two-dimensional original pictorial image is rectified to reproduce a clarified pictorial image.


Find Patent Forward Citations

Matsumoto, Noriyuki. (2004). Image emphasizing device for fingerprint verification (U.S. Patent No. 6718052). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6718052

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…