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:
Aug. 10, 2004
Filed:
Oct. 22, 1999
Data Logic S.p.A., Di Reno, IT;
Abstract
The method comprises acquiring a bidimensional image formed by a plurality of dots, characterized by a brightness value; dividing the bidimensional image into a plurality of image regions, each formed by a respective first number of dots; for each of the image regions, determining a first quantity correlated to the brightness variation intensity of each dot with respect to adjacent dots; for each image region, determining at least one second quantity correlated to the brightness variation direction of each dot with respect to adjacent dots; and determining any presence and type of a code in each of the image regions, on the basis of the determined quantities. These quantities typically comprise the contrast level of the image region, obtained by adding the gradient variation intensity of all contrast dots of the image region and directionality of the image region, obtained by calculating the gradient variation direction for all dots and searching for the prevalent direction or directions.