Patent ID: 8441549
Filing Date: 2013-05-14
Classification: H04N

Abstract:
1. A method for suppressing banding and rolling flicker in video acquired by a video camera, the method comprising: acquiring a plurality of video frames; assessing an amount of rolling flicker in the plurality of video frames, wherein said assessing comprises computing a first metric responsive to rolling flicker for a first set of color-accumulator blocks of the video camera, and computing a second metric responsive to motion interference for a second set of color-accumulator blocks of the video camera; configuring the video camera to quiet banding and rolling flicker responsive to periodic illumination at a first frequency if the amount of rolling flicker is above a first threshold, the first set excluding those color-accumulator blocks for which the second metric is below a second threshold; and configuring the video camera to quiet banding and rolling flicker responsive to periodic illumination at a second frequency if the amount of rolling flicker is below the first threshold.