Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Locating edges of a scanned document










Image Number 7 for United States Patent #6839155.

A structure and method for improved detection of the edges of a document in a scanner provides for positioning a width detection backer so that it is simultaneously in the field of view of the optical element of the scanner and out of the focal plane of the optical element. A portion of a document is positioned in the optical path between the optical element and the width detection backer and scanned with the optical element. Information from the scanning step is analyzed to identify data indicative of an edge of the document. The out of focus width detection backer, which remains stationary while scanning the document portion presents very little variation in intensity and other data, heightening the contrast between the document and the width detection backer, and reducing the likelihood of erroneously identifying elements of the width detection backer as document edge features.








 
 
  Recently Added Patents
Method and device for synthesizing image
Isolated Australian coral reef fluorescent proteins and cell-based kinase or phosphatase platforms for cancer drug development
Nitrogen and hindered phenol containing dual functional macromolecular antioxidants: synthesis, performances and applications
Mono-body defibrillation probe
Sending targeted product offerings based on personal information
Hermetically sealed atomic sensor package manufactured with expendable support structure
Methods, systems, and products for providing ring backs
  Randomly Featured Patents
Electrical plug housing
Polypropylene foamed particles
Set of nested bowls
Method of mounting a semiconductor chip on a wiring substrate
Portable water detector for fuel tanks
Safe for collecting public telephone tokens
Quinolonyl/quinolonylalkyl-N-terminal cycloalkoxy-C-terminal amino hydroxy .beta.-amino acid derivatives
Call identification display system
Apparatus for adaptive multiple-dimentional signal sequences encoding/decoding
Incinerator