Object Detection with Slight Vibration in Scene Image by Accumulating Changed Values of Gray-level Differential Vectors

Abstract

This paper proposes a method to detect an object with slight vibration in a scene image composed by multiple frame images. In the method, the value of the vector that represents strength and a direction of a gradient of gray-levels at every pixel in each frame is used to detect slight vibration of an object. The differential values between neighboring frames are accumulated to improve the sensitivity for detecting the slight vibration. After the accumulation for all frames in the scene image is completed, the status of the slight vibration is evaluated at every pixel. The experimental results show that the slight vibrations that were not detected by the visual sense in the experimental scene images were detected stably by the proposed method in comparison with the conventional frame differential method.