Abstract:

A motion estimation method combining the polar coordinates transform in the frequency domain with the Gauss-Newton minimization in space domain is presented. Firstly, a rough offset value between two frames’ images is coarsely estimated using the polar coordinates transform in the frequency domain. Then the accurate offset between two frames’ images is efficiently estimated using Gauss-Newton minimization method by taking the rough offset as the initial value. Therefore, a stable video sequence by image compensation using the accurate offset is achieved. Finally, the algorithm is optimized according to the environment of TMS320C6416 digital signal processor (DSP) for real time processing. Experimental results show that the optimized algorithm can accurately stabilize the video sequence with large motion offset in real time.