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:
Nov. 15, 2011
Filed:
Oct. 01, 2008
Jun Tamaru, Tokyo, JP;
Jun Tamaru, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An information embedding apparatus () which embeds information by changing the character spacing in a document image includes a discrimination unit () which discriminates a text area in the document image, a circumscribed rectangle extraction unit () which extracts the circumscribed rectangle of each character in the text area, a determination unit () which determines, based on the position and size of each extracted circumscribed rectangle, whether a portion having a character spacing smaller than a threshold exists, a reduction unit () which, for a character determined to have a character spacing smaller than the threshold, reduces the size of the character in at least the character arrangement direction, and a character position changing unit () which changes, in accordance with information to be embedded, the position of a character determined to have a character spacing equal to or larger than the threshold, and that of a character reduced.