A dynamic background image extraction method for the inside invader detection

摘要

How to extract a background image is an important subject to detect an invader from the motion picture. As a simple background image, a weighted time-average image and a non-adjacent-frame-deference image have been presented. However, these methods have such a critical problem that the target image is mixed in the background image. We found a simple method in which the two critical weak points: (1) big discard fractions in the background image (2) miss detection of the slow motion objects and the temporary stationary target objects are conquered, and we present it here with some simulation results.