Systems and methods for balancing infrared illumination in eye imaging
US9125599B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 10, 2013 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Dec 10, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/14
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The field of the invention relates to systems and methods for eye imaging and, more particularly, for balancing illuminations in eye imaging. An asymmetric illumination method to compensate for the imbalance illumination caused by nose reflection is described. In one embodiment, a method for balancing illuminations in eye imaging comprises generating one or more eye images, using the images to detect the imbalance illuminations from the nasal sclera and temporal sclera with the selected region of interest. In another embodiment, a system for balancing illuminations in eye imaging uses the detected imbalance illumination ratio of nasal/temporal sclera as the signal for adjusting the brightness of the infrared LEDs for asymmetric illumination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.