Patent ID: 9571684
Date: 2017-02-14
CPC Classifications: G06K,H04N

Claim:
1. A method for determining a length of a target placed on a platen of a flatbed scanner having a scan bar translated beneath the platen and a scan lid with a backer mounted thereon, the platen having a scan area, the backer having a fiducial on an outer surface of the backer at a predetermined location that is within a scan area of the platen when the scan lid is in a closed position and is between a first location L 1 and a second location L 2 corresponding to a bottom edge of a first target type and a bottom edge of a second target type, respectively, where L 2 >L 1 , the method comprising: placing a target in the scan area and placing the scan lid in the closed position; scanning the target and the backer with the scan bar to create a scanned image; searching the scanned image for an image of the fiducial; determining whether or not the image of the fiducial has been found; on determining that the image of the fiducial has been found, selecting the target to be of the first target type; and, on determining that the image of the fiducial has not been found, selecting the target to be of the second target type.