Systems and methods for reducing or substantially eliminating image flicker are provided. The method includes capturing a frame from a video data stream from a monitored region at a frame capture rate wherein the monitored region is illuminated by a lighting system with a predetermined cycle variation, determining a minimum common multiple of the frame capture rate and the cycle variation, determining a number of frames captured within the determined minimum common multiple of the frame capture rate and the cycle variation, and measuring accumulation at a multiple of the determined number of frames. Measuring the accumulation at a multiple of the determined number of frames substantially eliminates image flicker in the video data stream.