Identification and comparison apparatus for contour patterns such as fingerprints

• US 3,292,149 A
• Filed: 06/18/1964
• Issued: 12/13/1966
• Est. Priority Date: 06/18/1964
• Status: Expired due to Term

• Current Assignee: David A. Bourne
• Original Assignee: David A. Bourne
• Inventors: Bourne, David A.
• Application Number:
  US04/376,125
• Time in Patent Office: 908 Days
• US Class Current: 382/126
• CPC Class Codes: G06F 18/00 Pattern recognition
• CPC Class Codes: G06V 10/10 Image acquisition document image scanning and transmission H04N1/00; control of digital cameras H04N23/60
• CPC Class Codes: G06V 10/24 Aligning, centring, orientation detection or correction of the image
• CPC Class Codes: G06V 40/1365 Matching; Classification

Claims

2. CONTOUR PATTERN INDENTIFICATION APPARATUS FOR DETERMINING WHETHER A QUESTIONED PATTERN OF CONTOUR LINES SUBMITTED THERETO IS KNOW COMPRISING SCANNING MEANS ADAPTED TO SCAN SAID QUESTIONED PATTERN OF CONTOUR LINES AND PRODUCE A TRAIN OF ELECTRICAL PULSES CORRELATIVE TO THE SCANNING PATH;

MEMORY STORAGE MEANS PROVIDING STORED INDICIA CORRELATIVE TO A KNOWN PATTERN OF CONTOUR LINES;

REFERENCE COORDINATE DETERMINATION MEANS ADAPTED TO SEARCH THE QUESTIONED PATTERN OF CONTOUR LINES FOR A KNOWN REFERENCE COORDINATE COMPRISING MEANS FOR CONTROLLING SAID SCANNING MEANS SO AS TO DIRECT A PREDETERMINED SEQUENCE OF SCANNING CENTERS, AND MEANS FOR CONTROLLING SAID SCANNING MEANS SO AS TO DIRECT A PREDETERMINED SEQUENCE OF RADIAL SCANS AT EACH SAID SCANNING CENTER;

PATTERN INDENTIFICATION MEANS ADAPTED TO RESPOND TO LOCATION OF A REFERENCE COORDINATE BY SAID REFERENCE COORDINATE DETERMINATION MEANS BY CONTROLLING SAID SCANNING MEANS SO AS TO MAKE A SERIES OF SCANS HAVING A KNOWN SPATIAL RELATION TO SAID REFERENCE COORDINATE;

AND COMPARATOR MEANS ADAPTED TO COMPARE ANY TRAIN OF PULSES PRODUCED BY SAID SCANNING MEANS WITH THE INDICIA STORED IN SAID MEMORY STORAGE MEANS FOR CORRESPONDENCE.