Image Super-resolution Reconstruction Based on Weighted POCS

This paper aims at the selection of residual-repaired threshold in image super-resolution reconstruction based on Projection Onto Convex Sets(POCS) and improves it.Changing the mode of fixed residual-repaired threshold in the traditional POCS algorithm,this paper introduces a prior information about low resolution image definition into POCS to control the threshold by characterization parameter of image relative definition and realizes the dynamic threshold selection in the entire progress of reconstruction.Experimental results show that the improved algorithm has very good effect on improving the clarity of the reconstructed image and PSNR.