Multi-Frame Super-Resolution Image Reconstruction Employing the Novel Estimator L1inv-norm

In multi-frame Super-Resolution (SR) image reconstruction a single High-Resolution (HR) image is created from a sequence of Low-Resolution (LR) frames. This work considers stochastic regularized multi-frame SR image reconstruction from the data-fidelity point of view. In fact, a novel estimator named  inv L1 norm is proposed for assuring fidelity to the measured data. This estimator presents the hybrid form of both 1 L error norm and logarithm ln. The introduced  inv L1 norm is combined with the Bilateral Total Variation (BTV) regularization. The proposed SR method is directly compared with an existing SR method which employs the Lorentzian estimator in combination with the BTV regularizer. The experimental results prove that the proposed technique predominates over the existing technique.