Document scanning method, system, and device having sets of parallel lines as background

摘要

Methods and devices are described for detecting boundaries of documents on flatbed and multi-function scanners on a first pass of a carriage assembly, and then performing a high resolution scan on a second pass. High resolution images of documents can then be obtained with little or no interaction normally necessary to identify areas of interest on the scanner bed. Patterns on the scanner cover or lid facilitate not only edge determination, but orientation of text and other objects, and straightening of images in preparation for OCR and related functions. Electronic images and files derived from paper documents may be automatically cropped, deskewed, subjected to OCR, and named consistent with content or other information derived from them.

主权项

1. A method for scanning a document, the method comprising:
positioning a document from a feeder onto a transparent bed of a scanning device; generating an image of the document and at least a portion of contents of a background behind the document; and distinguishing the background from the document based on the contents of the background in the image by comparing a representation of the image to a representation of a portion of the background stored in an electronic storage component, wherein the background comprises a first set of parallel lines and a second set of parallel lines, and wherein the first set of parallel lines are parallel to each other and are spaced unevenly from each other and the second set of parallel lines are parallel to each other and are spaced unevenly from each other.