Apparatus and method for compensating auto-focus of image capture device by utilizing red-eye eliminating function
US6614995B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 28, 2001 |
| Grant date | Sep 2, 2003 |
| Priority date | — |
| Expiry date | Nov 28, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2215/05
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
There are provided an apparatus and a method for compensating auto-focus of image capture device by utilizing red-eye eliminating function. An auto-focus module preliminarily determines a first distance from an object to the image capture device based on a first focal length evaluation value of the object, so as to perform a rough adjustment of the focal length. Whenever a red-eye eliminating device flashes to eliminate red-eye effect, the image sensor captures the image of the object so as to obtain a second focal length evaluation value of the object. The auto-focus module determines a second distance from the object to the image fetching device based on the second focal length evaluation value of the object, thereby performing a fine adjustment of the focal length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.