MTF compensation method utilizing the curved edge for high-resolution satellite image recovery
Qiuhua Luo, Lin Wang, Hong Yang, Shaohui Zhang, Xiaopeng Shao · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2014
The low resolved satellite images caused by serious degradation in remote sensing weaken its utilities in practice. An effective algorithm of high resolution remote sensing image reconstruction is proposed to recover the degraded images using a precise estimated modulated transfer function (MTF) of the imaging system from a curve knife edge. The curve edge is chosen automatically and robustly among many candidate edges, which can provide a higher precision in comparison to straight edge. To suppress the artifacts and noise, the total variation (TV) method is applied as well. The experiments show this algorithm is suitable to recover a high-resolved image with a high signal-to-noise ratio (SNR).