TY JOUR TI Bringing luminance histograms of low-contrast digital images to two-level piecewise uniform distribution KW digital images KW histogram KW low-contrast image KW brightness KW picture contrast KW distinguishability of details KW uniform distribution KW piecewise uniform distribution JO Vestnik of Astrakhan State Technical University. Series: Management, computer science and informatics AU Raukhvarger, A.B. AU Poshekhonov, N.A. PY 2020 IS PB Astrakhan State Technical University