Patent · US Expired

Method and device for the FPN correction of image signals

US7420599B2 · kind B2 · utility

1Cited by

7References

23Claims

0Family size

Assignee

Institut für Mikroelektronik Stuttgart · DE

Inventors

Bernd Hofflinger · Sindelfingen, DE
Cornelis Scherjon · Gerlingen, DE

Key dates

Filing date	Sep 30, 2003
Grant date	Sep 2, 2008
Priority date	—
Expiry date	Jul 1, 2025

Classification

Technology area (CPC H)Electricity
CPC primaryH04N25/573
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A device for the FPN correction of image signals which are generated by image cells of an image sensor comprises a discriminator for determining in which value range out of at least two value ranges a value of an image signal of an image cell is located at a predetermined instant of time. The result determined by the discriminator is feed to a correction device. The correction device selects correction coefficients from a plurality of sets of correction coefficients as a function of the result determined by the discriminator, and a transformation unit calculates the corrected value for the image signal by using the selected correction coefficients.

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