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Automatic process of maceral analysis and determination of the reflecting power of vitrinite in coals.
Automatic process of maceral analysis and determination of the reflecting power of vitrinite in coals.
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机译:自动进行宏观分析并确定煤中镜质体反射能力的过程。
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摘要
Method for maceral analysis of coal on a sample consisting of ground coal coated in a resin, by exploring the surface of the sample using a microscope and by measuring the reflectance (reflective power) of vitrinite, characterised by the following steps: - for each field of the microscope, a digitised image with grey levels is produced; - the fields with high resin content are eliminated by thresholding; - for each field not eliminated: a) the grey level distributions and the gradients are determined; b) a binary image is produced by thresholding the grey gradients so as to determine the vitrinite zones; c) the distribution of the grey levels or densitometry of the vitrinite zones obtained is determined; and d) the reflectance of the vitrinite is calculated. IMAGE
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