Solution of the Problem of Smoothing of the Signals at the Preprocessing of Thermal Images Evgenii Semenishchev, Irina Tolstova, Aleksandr Gavlicky and Yigang Cen EPJ Web Conf., 224 (2019) 04007 Published online: 09 December 2019 DOI: 10.1051/epjconf/201922404007