A METHOD FOR MOTION-ADAPTIVE FRAME RATE UP-CONVERSION

A frame interpolation algorithm for frame rate up-conversion of progre ssive image sequences is proposed. The algorithm is based on simple mo tion compensation and linear interpolation, A motion vector is searche d for each pixel in the interpolated image and the resulting motion fi eld is median filtered to remove inconsistent vectors, Averaging along the motion trajectory is used to produce the interpolated pixel value s, The main novelty of the proposed method is the motion compensation algorithm which has been designed with low computational complexity as an important criterion. Subsampled blocks are used in block matching and the vector search range is constrained to the most likely motion v ectors, Simulation results show that good visual quality has been obta ined with moderate complexity, The algorithm has been designed mainly for 50 Hz to 75 Hz frame rate up-conversion with applications in a mul timedia environment, but it can also be used in advanced television re ceivers to remove artifacts due to low scan rate.