An Improved Image Super-Resolution Algorithm

摘要

Now many image super-resolution methods suppose that the optical flows between images should be computed accurately. But really it is very difficult to get them and the models of imaging systems are unknown almost. Thurs perturbation errors always occur in the image super-resolution model. The paper proposes an improved image super-resolution algorithm based on total least squares method. The average image based on images is used as regularized penalty for posteriori probability model. The paper presents the improved Rayleigh quotient format for energy objective function. Then a conjugate gradient algorithm is used to minimize the modified Rayleigh quotient function. The method can minimize two the errors from the sampled low-resolution images and in that perturbation system matrix of high-resolution reconstruction. The test results showed that the algorithm is stable for the perturbation system matrix.