TY JOUR TI Method for Assessing the Quality of Images Generated by Remote Monitoring Devices for Rolling Stock and Railway Tracks KW image quality assessment KW Walsh-Hadamard transformation KW two-dimensional image spectrum KW Sobel operator KW remote control KW rolling stock KW railway tracks KW defects KW diagnostics JO Intellectual Technologies on Transport AU Shabakov, E.I. AU Kurenkov, N.O. PY 2025 IS 0 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"