Patent · US Expired

Fingerprint comparing apparatus

US6175640A · kind A · utility

5Cited by
4References
21Claims
0Family size

Assignee

Inventor

Key dates

Filing dateJan 23, 1998
Grant dateJan 16, 2001
Priority date—
Expiry dateJan 23, 2018

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG06V40/1365
  • WIPO fieldControl
  • WIPO sectorInstruments

Abstract

An image collating apparatus, e.g. a fingerprint comparing apparatus, is enabled to obtain reliable collation results with a simple configuration. A plurality of areas cut out of 1 image to be processed is caused to scan another image to detect the distributions of the degrees of coincidence; these distributions of the degrees of coincidence are corrected with the positional relationship among the areas; the corrected distributions are summed up; and the coincidence or non-coincidence between the two images is judged on the basis of the resultant sum of the distributions of the degrees of coincidence

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.