F. Hasan, D., A. Abdul-Jabar, M. and T. Abed Al-Mokhtar, Z. 2012. De-speckling 2D-Discrete Wavelet Transform with Hard Threshold Stage. AL-Rafidain Journal of Computer Sciences and Mathematics. 9, 1 (Jun. 2012), 101–112. DOI:https://doi.org/10.33899/csmj.2012.163674 .