Patent · US Active

Method for reducing intensity variations in a video image stream depicting a scene

US10963997B2 · kind B2 · utility

0Cited by

0References

9Claims

0Family size

Assignee

Axis AB · SE

Inventors

Sebastian Fors · Lund, SE
Johan Jeppsson · Lund, SE
Anton Öhrn · Lund, SE
Jimmie Jönsson · Lund, SE
Björn Benderius · Lund, SE
Andreas Muhrbeck · Lund, SE
Karin Dammer · Lund, SE

Key dates

Filing date	Nov 21, 2019
Grant date	Mar 30, 2021
Priority date	—
Expiry date	Nov 21, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG06T2207/20208
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A method and a digital video camera for reducing intensity variations in a video stream depicting a scene comprising capturing, using a first sensor setting, a first frame; detecting a change in intensity in a portion of the first frame, the portion represents a first area of the scene; determining a second sensor setting based on the first frame; capturing, using the second sensor setting, a second frame; creating a local tone mapping mask, wherein a local tone mapping in the first area of the scene is different from a local tone mapping in an area outside the first area, and wherein the local tone mapping in the area outside the first area is based on a relation between the first sensor setting and the second sensor setting; and applying the local tone mapping mask to the second frame.

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