A new image interpolation using laplacian operator

Abstract

In this paper, a novel method for image interpolation is proposed. This method is based on the application of the Laplacian operator for the purpose of detecting the edge-directions and then interpolating the missing pixels using the cubic convolution. We start applying a down-sampled by a factor of two to the gray highresolution image in order to obtain a low-resolution image. Then, the preprocessed image is reconstructed by using the proposed interpolation method. The proposed method is implemented and tested over several gray images, and also compared to many interpolation methods in the state-of-the-art. The simulation results are shown to be superior compared to the other interpolation methods in both of objective measurement in terms of PSNR, SSIM and FSIM, and visual quality of image results.