Scrolling text processing for motion compensated frame interpolation

This paper proposes a low complexity scrolling text processing method for motion compensated frame interpolation. An update strategy is given to determine whether to add update values to the candidate motion vectors, thus reducing interruption brought by the incorrect update values whereas not affecting the convergence speed. Without complex detection of the scrolling text, a geometric-based motion vector constraint method in motion estimation process can effectively keep the motion consistence of the scrolling text. Experimental results show that our interpolation results have much better visual quality than other methods in the presence of scrolling text. Besides, the proposed scheme is robust for video sequences which contain whether slow or fast motion. Test patterns without scrolling text also benefit from the suggested method.