关键词: Richardson-Lucy算法, 梯度先验, 模糊核估计, 图像盲复原

Abstract: As for flotation process based on machine vision, blurred images are restored based on image priors and Richardson-Lucy algorithm, considering blurred bubble images acquired by industrial camera. Firstly, blur kernel is estimated based on image priors in multi-scale. Then the Richardson-Lucy algorithm is improved to suppress the influences of saturated regions. Finally, the blurred image is restored utilizing estimated blur kernel and improved Richardson-Lucy algorithm. Experimental results demonstrate that compared with the Richardson-Lucy algorithm and other algorithms, the improved algorithm can restore image with better visual results and objective evaluation.

Key words: Richardson-Lucy algorithm, gradient prior, blur kernel estimation, blind image restoration