Hierarchical Bit-plane Global Motion Estimation for Image Stabilization
Wei Sun · ACTA PHOTONICA SINICA · 2009
A fast global motion estimation method based on hierarchical bit-plane matching is proposed.It makes full use of multi-resolution pyramid matching with different bit-planes to find the translation vector.According to the high correlation of adjacent blocks' motion vectors and father-children of hierarchical blocks,the initial search point is adaptively chosen.The threshold is also selected to detect the motion accuracy to finish the search in advance.With all the local motions as a set,the motion with the largest number is detected as the global motion.Experimental results show that this algorithm excels the block matching in speed while the error is below 0.5 pixel.