A guide to digital image stabilization procedure — An overview

Digital image stabilizer (DIS) is an important component of a digital video camera. Its purpose is to compensate video which suffers from camera jitters due to unstable random camera motions (hand held video cameras). In this paper a guide for a general-robust video stabilization algorithm which can remove unwanted motions (translation or rotation) is proposed. First the optical flow between two successive frames is computed, then from the computed optical flow field and an affine motion model the camera motion is estimated. A filter is used to smooth the affine parameters. Finally the stabilized frames are obtained from the previous stabilized frames and the corresponding smoothed affine parameters. Experimental results are given to demonstrate the performance of the proposed guide.