Patent · US Active

Method of adaptive image contrast enhancement

US7512269B2 · kind B2 · utility

2Cited by

12References

26Claims

0Family size

Inventors

Asaf Golan · Haifa, IL
Avraham Levy · Kfar Shmaryahu, IL

Key dates

Filing date	Aug 4, 2005
Grant date	Mar 31, 2009
Priority date	—
Expiry date	Apr 25, 2027

Classification

Technology area (CPC G)Physics
CPC primaryG06T5/92
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

The contrast of a digital image is enhanced by forming a histogram of the luma values of an active area of the image, computing “initial” bin indices that partition the histogram into bins of substantially equal population, mapping the “initial” bin indices into “final” bin indices that are more uniformly spaced than the “initial” bin indices, and adjusting the luma values of all the pixels in accordance with the “final” bin indices.

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