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:
Jul. 03, 2012
Filed:
Oct. 09, 2009
Erica Drew Cooksey, Tampa, FL (US);
William Douglas Withers, Crofton, MD (US);
Erica Drew Cooksey, Tampa, FL (US);
William Douglas Withers, Crofton, MD (US);
Accusoft Corporation, Tampa, FL (US);
Abstract
Methods and apparatus for binarizing images represented by sets of multivalent pixel values in a computationally efficient manner are described In a grayscale image to be binarized, one group of pixel values represents 'foreground', e.g., text to be converted to black, while another group represents a shaded 'background' region to be converted, e.g., to white. The difference between foreground and background is often a function of the scale of the image components, e.g., text and/or other images. Filters in the form of morphological operators, computationally efficient quick-open and quick-close morphological operators are employed to binarize images, e.g., grayscale images. The methods and apparatus effectively handle both smooth and sharp image background structures in a computationally efficient manner.