Detection of Moving Targets with a Moving Camera

In this paper we propose a new method of detecting moving objects from a moving camera based on SIFT(The Scale Invariant Feature Transform) features matching and dynamic background modeling. Firstly, feature points are extracted by SIFT algorithm to compute the affine transformation parameters of camera motion, and guided by RANSAC to remove the outliers. We adopt background subtraction approach to detect moving objects, with shadow and ghost removing. The robustness of SIFT Features matching and the validity of picking out outliers by a RANSAC algorithm make the parameters of affine transform model to be computed accurately, and by the background subtraction approach with dynamically-updated background model, foreground objects can be detected perfectly. Experimental results demonstrate that our algorithm can detect moving objects accurately, and keep the integrity of foreground objects, comparing with optical flow method.