A new motion field enhancement technique for video coding
F. Moscheni, Fréderic Dufaux, Iole Moccagatta, Martin Schütz · Infoscience (Ecole Polytechnique Fédérale de Lausanne) · 1994
Video coding schemes rely on motion estimation and compensation methods to exploit temporal redundancies. Due to their simplicity and low overhead information, block matching techniques are widely used. They however induce annoying artifacts due the hypothesis of uniform motion within each block. In this paper, a VQ-based segmentation en- tailing a refinement of the motion eld is proposed. The segmentation is controlled by an entropy criterion leading to an optimal bit allocation between motion, segmentation and DFD information. Simulation results show an improvement of the PSNR as well as a removal of the block artifacts. A significant enhancement of the visual quality is reached.