Use of relatively permanent pigmented or vascular skin mark patterns in images for personal identification

摘要

Embodiments include methods, devices, software, and systems for identifying a person based on relatively permanent pigmented or vascular skin mark (RPPVSM) patterns in images. Locations of RPPVSMs in different images of people are point matched, and a correspondence probability that the point matched RPPVSMs are from different people is calculated. Other embodiments are also described. Other embodiments are also described and claimed.

主权项

1. A method comprising:
point matching a first plurality of RPPVSMs in a first image with a second plurality of RPPVSMs in a second image; and calculating a correspondence probability that the first plurality of RPPVSMs and the second plurality of RPPVSMs are from different persons, wherein one of the point matching or the calculating is performed by a processor, and wherein calculating a correspondence probability includes using:p⁡(A,C,n,m,p)=Cpn⁢∏i=0p-1⁢⁢((m-i)⁢CA-iC)⁢∏i=pn-1⁢⁢(A-(m+p-i)⁢CA-iC)where C=πr2, A is a size of overlapped total skin area of two images containing RPPVSMs, r is a distance threshold between two RPPVSMs to be considered matching, and p is a number of matching RPPVSMs of the first and second images.