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. 01, 2009
Filed:
Mar. 10, 2004
Martin Hund, Allensbach, DE;
Martin Hund, Allensbach, DE;
Captaris, Inc., Bellevue, WA (US);
Abstract
In a method for processing of color information of a document provided with noise characters and usable characters, a digital image of the document is generated comprised of image points. At least one image region of a first type is selected corresponding to a region of the document that contains noise characters but no usable characters. A brightness value range based on brightness value ranges of image points of the first type is established. For saturation values of image points of the first type whose brightness values lie in the established brightness value range, a frequency with which these saturation values occur in the image region of the first type is determined. Based on these saturation values whose determined frequency exceeds a predetermined value, a saturation value range containing these saturation values is established. For color tone values of image points of the first type whose brightness values lie in the established brightness value range, a frequency with which these color tone values occur in the image region of the first type is determined. Based on color tone values whose determined frequency exceeds a predetermined value, a color tone value range containing these color tone values is established. Colors of those image points whose brightness values lie in the established brightness value range, whose saturation values lie in the established saturation value range, and whose color tone values lie in the established color tone value range are associated with a first color class of colors corresponding to the noise characters. Colors of image points of the first type that are not associated with the first color class are associated with a second color class of colors corresponding to a character-less document. At least one image region of a second type is selected known to correspond to a region that contains neither noise nor usable characters. Colors of image points of the second type whose brightness values lie in the established brightness value range, whose saturation values lie in the established saturation value range, and whose color tone values lie in the established color tone value range are excluded from the first color class and are associated with the second color class.