Diffraction-limited image reconstruction with SURE for atmospheric turbulence removal

In order to remove the atmospheric turbulence effects in long-distance imaging systems, a novel method of diffraction-limited image reconstruction from multiframe image based on Stein's unbiased risk estimate (SURE) is proposed. A diffraction-limited image reconstruction objective function is designed by combining the temporal and spatial information. The SURE is employed to optimize the objective function. The experimental results on real data demonstrate that a single high-quality image with more details of the scene can be restored from a degraded image sequence. The performance of the proposed algorithm is superior to the method of near-diffraction-limited image reconstruction in visual quality.