%0 Journal Article %T The Efficiency of optical systems for measuring of thickness of round timber %A Safonov, A.O. %A Platonov, A.D. %A Miltsin, A.N. %A Makarov, G.. %K round timber, optical measurement system, measurement error, receiver emitter, spinduolis %J Actual directions of scientific researches of the XXI century: theory and practice %D 2014 %N 2 %P 5 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov