Patent · US Active

Image processing apparatus and imaging device

US7835590B2 · kind B2 · utility

1Cited by

5References

11Claims

0Family size

Assignee

Kabushiki Kaisha Toshiba · JP

Inventors

Goh Itoh · Tokyo, JP
Ryosuke Nonaka · Yokohama, JP

Key dates

Filing date	Mar 23, 2007
Grant date	Nov 16, 2010
Priority date	—
Expiry date	Sep 5, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG06T2207/10024
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

An image processing apparatus generates a brightness component image of a low-sensitivity image by applying a smoothing filter to the low-sensitivity image, generates a brightness component image of a high-sensitivity image by applying the smoothing filter to the high-sensitivity image, generates a contrast component image of the low-sensitivity image by dividing the low-sensitivity image by the brightness component image of the low-sensitivity image, generating a contrast component image of the high-sensitivity image by dividing the high-sensitivity image by the brightness component image of the high-sensitivity image, generates a combined brightness component image by combining the brightness component images of the low-sensitivity image and of the high-sensitivity image, generates a combined contrast component image by combining the contrast component images of the low-sensitivity image and of the high-sensitivity image, and finally generates a contrast-expanded image by multiplying the combined brightness component image and the combined contrast component image.

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