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:
May. 16, 2006
Filed:
Jun. 01, 2001
Frederic Dufaux, Chestnut Hill, MA (US);
Sing Bing Kang, Redmond, WA (US);
Robert Alan Ulichney, Stow, MA (US);
Frederic Dufaux, Chestnut Hill, MA (US);
Sing Bing Kang, Redmond, WA (US);
Robert Alan Ulichney, Stow, MA (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A camera-based document scanning system produces electronic versions of documents, based on a plurality of images of discrete portions of the documents. The system compares each pair of consecutive images and derives motion parameters that indicate the relative motion between each pair of consecutive images. The system utilizes the derived motion parameters to align and merge each image with respect to the previous images, thereby building a single, mosaic image of the document. In the illustrative embodiment, the motion parameters are derived by minimizing a sum of squared differences equation on a pixel-by-pixel basis.