Patent · US Active

Method, apparatus and computer program product for compensating eye color defects

US9355456B2 · kind B2 · utility

0Cited by

4References

21Claims

0Family size

Assignee

NOKIA TECHNOLOGIES OY · FI

Inventors

Basavaraja S-V · Bengaluru, IN
Krishna Annasagar Govindarao · Bengaluru, IN
Veldandi Muninder · San Jose, US
Pranav Mishra · Bengaluru, IN

Key dates

Filing date	May 17, 2011
Grant date	May 31, 2016
Priority date	—
Expiry date	Jul 30, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG06V10/473
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A red-eye detection and correction method includes computing a first difference image based on a difference between red pixel intensity and green pixel intensity of a set of pixels. The set of pixels are associated with a first eye region of an image. The method further includes processing the first difference image for computing at least one gradient and at least one projection associated with the at least one gradient. Furthermore, the method includes determining at least one central point based on the at least one projection; and thereafter computing the first eye color defect region based on the at least one central point and a plurality of red pixels of the set of pixels. The method also includes mapping an eye color defect location information computed from a low resolution image to be applicable on the original high resolution image, thereby avoiding recomputation.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.