Transform-domain super resolution for improved motion-compensated prediction
This paper introduces a new approach to motion compensated prediction for video compression. A two-way motion compensation approach is utilized in which the motion compensated prediction is generated either from a super resolution mosaic accumulated using a number of previously decoded frames or from a low-resolution reference frame. The super resolution mosaic is constructed using our improved global motion estimation technique. Experimental results show that the two-way motion compensation provides a better coding gain compared with a standard motion compensation approach and moreover, in the process of super resolution mosaic construction, our robust global motion estimation process outperforms other recent motion estimation techniques when utilizing the same compression framework.