Optical recognition methods for locating eyes
US6419638B1 · kind B1 · utility
95Cited by
5References
30Claims
0Family size
Inventors
Key dates
| Filing date | Aug 1, 2000 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | Aug 1, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30041
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for processing an image of eyes of a subject is provided. The image is divided into two halves, each containing an eye of the subject. The halves are then processed to determine at least a position of a pupil within the first half and second half. After positions of the pupils are determined, horizontal and vertical histograms are developed from the pupil in each of the halves. Several ways of plotting the respective histograms are disclosed, these plots provided with various indicators for detecting abnormal conditions of the eyes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.