Image histogram as a tool for a coal stream homogeneity evaluation

Mineral Engineering Conference

Heyduk, A.^1 ; Joostberens, J.^1 ; Nowrot, A.^1 ; Pielot, J.^1 ; Fabiaczyk, K.^2

Department of Electrical Engineering and Automation in Industry, Faculty of Mining and Geology, Silesian Technical University, Akademicka 2, Gliwice

44-100, Poland^1

Polcargo International Ltd, Szczecin, Poland^2

关键词: Complex analysis;    Comprehensive analysis;    Distance measure;    Gray scale;    Histogram analysis;    Image histograms;    Stream quality;    Wooden blocks;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/427/1/012023/pdf
DOI  :  10.1088/1757-899X/427/1/012023

来源: IOP

【 摘 要 】

The paper presents selected results of the preliminary laboratory research on the application of histogram analysis to the problem of coal stream homogeneity evaluation. This is an important problem of industrial coal mine output stream quality testing. Image acquisition is fast and cheap, but needs complex analysis techniques. Histogram analysis can be considered to be one of them. There has been proposed a distance measure, and there have been presented analysis results which proved an ability to detect gangue, rock, schist, and even wooden block contamination of the homogenous coal stream. The method needs further improvement and comprehensive analysis of other available options of the RGB-to-grayscale conversion and of histogram comparison to make it more selective. These further research directions have also been described in the paper.