Monagi Alkinani and Mahmoud R. El-Sakka, "A Modified Block Matching 3D Algorithm for Additive Noise Reduction", Mathematics for Applications Journal, Vol. 5, No. 2, pp. 93-103, 2016.
This paper presents a patch-based image filtering algorithm for high additive noise reduction. Our algorithm is a modification to the block matching 3D algorithm, where an adaptive thresholding was used for the collaborative hard-thresholding step. The collaborative Wiener filtering step was also modified by assigning more weights for similar patches. Experimental results show that our algorithm outperforms the original block matching 3D algorithm at various noise levels.