Motion compensation based on tangent distance prediction for video compression

We present, in this article, a new algorithm for motion compensation that uses a motion estimation method based on tangent distance. The method is compared with a BlockMatching based approach in various common situations. Whereas Block-Matching algorithms usually only predict positions of blocks over time, our method also predicts the evolution of pixels into these blocks. The prediction error is then drastically decreased. We test our method in the Theora codec and show that our algorithm can be used to improve video codec performances.