Super resolution using variable size block-matching motion estimation with rotation

Motion estimation (ME) for image sequences is one of the important processes in image restoration. Block matching algorithms can be used for local ME. Recently, the variable block size motion estimation (VBS-ME) has been received attention in order to improve the performance of the block matching algorithms. In this paper, we have evaluated variable-sized-block-matching ME with rotation in the registration step. Results of proposed method are compared with exhaustive search (ES) that does not consider rotation and static block size (BS) angle search (AS) that considers rotation. Both peak-signal-to-noise-ratio (psnr) and visual quality are used in comparison of all three methods.