A Study Of The Frame-Rate Up-Conversion Algorithm Based On Precise Motion Estimation

The algorithm of Frame-Rate Up-Conversion(FRUC) is a method to enhance the quality of video playing. It’s used to promote video frame rate. When promote frame rate to a higher level, we can remove or alleviate some effects that decrease the quality of video playing, such as motion blur. FRUC has been applied in HDTV and video-play equ1pments.This paper introduces some basic ideas about FRUC, realize an FRUC based on bidirectional motion estimation. In order to acquire a more accurate and precise motion-vector field, we bring in a new additional pre-treatment module, make some revise to the motion estimation module and the bilinear interpolation module. What’s more, we make some test using the idea of optic flow which has never been used in this field. At last we get a new algorithm with a better effect.In the pre-treatment module, we use gradient calculation result to get motion estimation. By using this pre-treatment module, we alleviate the affect of video quality on the accuracy of motion estimation.Applying the adapting block splitting, the revise of motion estimation module can ease the negative effect with too big block size, and alleviate the distortion of the generated frame when fast move object exist in the scene.The revise of bilinear interpolation module is mainly about the new motion vector selection rule and the boundary treatment. This revise can slightly promote the objective and subjective performance of this algorithmTo guarantee the speed of algorithm, we only calculate the optic flow of some strong corners of the image, we use this optic flow to revise the motion vectors of the motion estimation module of the algorithm.