Method and apparatus for non-contact signature imaging
January 5, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesApparatus and a method for storage and retrieval of image patterns Signature verification method and apparatus Shifting technique for signature verification Automated article handling system and process Dedicated programmable controller for interactive video disc system Method of and apparatus for processing image signal Self-centering character stroke thickening for optical character recognition Label, method and device for locating addresses on articles to be sorted Detection of barcodes in binary images with arbitrary orientation System for recording an image having a facial image and ID information InventorAssigneeApplicationNo. 463746 filed on 06/05/1995US Classes:382/119, Using a signature382/123, Sensing geometrical properties382/198Extracted from alphanumeric charactersExaminersPrimary: Moore, David K.Assistant: Chen, Wenpeng Attorney, Agent or FirmForeign Patent References
International ClassesG06K 009/00G06K 009/48 AbstractA portable, hand-held apparatus for capturing a gray scale image of a signature within a box having fiducial marks in the corners. Portions of the image outside the box are trimmed away and the box is oriented and scaled to a standard size and shape. Signature storage requirements are minimized and signature recognition is facilitated by thresholding the gray scale image and thinning the strokes of the signature to an image width of one pixel.Other References
Field of SearchUsing a signatureSensing geometrical properties Directional codes and vectors (e.g., Freeman chains, compasslike codes) Extracted from alphanumeric characters Pattern boundary and edge measurements Line thinning or thickening Using a facial characteristic Contour or chain coding (e.g., Bezier) Based on peak levels Reading bank checks (e.g., documents bearing E-13B type characters) For setting a threshold Run-length coding | |
