Animal identification system based on irial granule analysis
US6320973A · kind A · utility
29Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2001 |
| Grant date | Nov 20, 2001 |
| Priority date | — |
| Expiry date | Feb 28, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/18
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An animal identification system is provided which is designed to determine outlines of a pupil and irial granule in an input image of an eye of an animal to be identified, apply an arc to a lower portion of the outline of the pupil, turns back the arc from a principal axis to define a reference axis, and maps an image of the irial granule into a polar coordinate system whose origin is the center of the reference axis. The shape of the irial granule corrected in the above manner is compared with a reference shape stored in a memory to determine whether the input image arises from the same animal or not.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.