Multi-Frame Super-Resolution Reconstruction Algorithm Based on Diffusion Tensor Regularization Term
Xiao Dong Zhao, Zuo Feng Zhou, Jian Zhong Cao, Long Ren, Guang Sen Liu, Hua Wang, Deng Shan Wu, Jia Hai Tan · Applied Mechanics and Materials · 2014
This paper presents a multi-frame super-resolution (SR) reconstruction algorithm based on diffusion tensor regularization term. Firstly, L1-norm structure is used as data fidelity term, anisotropic diffusion equation with directional smooth characteristics is introduced as a prior knowledge to optimize reconstruction result. Secondly, combined with shock filter, SR reconstruction energy functional is established. Finally, Euler-Lagrange equation based on nonlinear diffusion model is exported. Simulation results validate that the proposed algorithm enhances image edges and suppresses noise effectively, which proves better robustness.