Flackerdetektionsverfahren und Flackerdetektionsvorrichtung

Details

Veröffentlichungs-Nr.

EP2827579

Aktenzeichen

EP14176514

Anmeldetag

10. Juli 2014

Veröffentlichung

4. Januar 2017

Erteilung

4. Januar 2017

Rechtsraum

EP

IPC

H04N5/235

Abstract

The present invention discloses a flicker detection method and a flicker detection apparatus. The method includes: calculating the mean values of selected rows of image frames to constitute a mean value vector; calculating a differential vector between the mean value vectors of a current frame and a previous frame; calculating a DC-free difference vector by subtracting a direct current component from respective elements of the differential vector; calculating a power spectrum corresponding to the DC-free difference vector; obtaining a first frequency reference value; obtaining a second frequency reference value; and if the difference between the first and second frequency reference values is above a threshold, then it is determined that flicker is present in the current frame; otherwise, it is determined that no flicker is present.

Anmelder

Firma

FUJITSU LIMITED

Land

🇯🇵 Japan

Fachgebiete