Verfahren zur Verbesserung der Leistung einer Videokamera

Details

Veröffentlichungs-Nr.

EP3930307

Aktenzeichen

EP20182334

Anmeldetag

25. Juni 2020

Veröffentlichung

1. Juni 2022

Erteilung

1. Juni 2022

Rechtsraum

EP

IPC

H04N5/238H04N5/225H04N5/232H04N9/04

Abstract

A method for enhancing the performance of a video camera capable of switching between night-mode operation and day-mode operation, comprises: Acquiring a first sequence of images with the video camera with an IR-transmission filter of known transmission characteristics in front of an image sensor of the video camera, the IR transmission filter having a transmission in the IR-region of above 30 %, and acquiring a second sequence of images with the video camera without the IR-transmission filter arranged in front of the image sensor. The method then proceeds to using the first and the second image sequence to assess a measure of contribution from visual light, or a contribution of IR radiation to images in the first stream and/or second stream of images. The measurements result in the opportunity of utilizing an assessment of the calculated contribution to improve the performance of the video camera by, switching the video camera from night-mode to day-mode, or to add color information to images acquired with full or partial transmission of IRradiation to the image sensor.

Anmelder

Firma

Axis AB

Land

🇸🇪 Schweden

Fachgebiete