Modified motion compensated temporal frame interpolation for very low bit rate video

Common techniques such as frame repetition or linear interpolation for reconstructing skipped frames in temporally subsampled video sequences tend to introduce undesirable artifacts. A previously proposed technique, fast motion compensated temporal interpolation (FMCTI), can interpolate video frames in the time domain with good interpolated image quality. However, the reconstructed frames tend to be blocky. We propose to incorporate a pixel-based motion classifier into FMCTI to solve the problem. The resulting technique, modified fast motion compensated temporal interpolation (MFMCTI), was found by simulation to give significantly reduced blocking artifacts.