TY - JOUR N2 - Fractal analysis is one of the rapidly evolving branches of mathematics and finds its application in different analyses such as pore space description. It constitutes a new approach to the issue of their natural irregularity and roughness. To be properly applied, it should be encompassed by an error estimation. The article presents and verifies uncertainties along with imperfections connected with image analysis and expands on the possible ways of their correction. One of key aspects of such research is finding both appropriate place and the number of photos to take. A coarse- grained sandstone thin section was photographed and then pictures were combined into one, bigger image. Fractal parameters distributions show their change and suggest that the accurately gathered group of photos include both highly and less porous regions. Their amount should be representative and adequate to the sample. The resolution influence on the fractal dimension and lacunarity values was examined. For SEM limestone images obtained using backscattered electrons, magnification in the range of 120x to 2000x was used. Additionally, a single pore was examined. The acquired results point to the fact that the values of fractal dimension are similar to a wide range of magnifications, while lacunarity changes each time. This is connected with changing homogeneity of the image. The article also undertakes a problem of determining fractal parameters spatial distribution based on binarization. The available methods assume that it is carried out after or before the image division into rectangles to create fractal dimension and lacunarity values for interpolation. An individual binarization, although time consuming, provides better results that resemble reality to a closer degree. It is not possible to define a single, correct methodology of error elimination. A set of hints has been presented that can improve results of further image analysis of pore space. L1 - http://czasopisma.pan.pl/Content/107927/PDF/figiel.pdf L2 - http://czasopisma.pan.pl/Content/107927 PY - 2018 IS - Nr 107 EP - 186 DO - 10.24425/123720 KW - fractal dimension KW - lacunarity KW - image analysis KW - pore-space KW - error estimation A1 - Figiel, MichaƂ PB - Instytut Gospodarki Surowcami Mineralnymi Polskiej Akademii Nauk CY - More info at Journal site: https://min-pan.krakow.pl/wydawnictwo/czasopisma/zeszyty-naukowe-instytutu-surowcami-mineralnymi-i-energia-pan/ https://min-pan.krakow.pl/wydawnictwo/wp-content/uploads/sites/4/2018/02/Wskazowki-ZN-ang-2018.pdf DA - 2019.01.04 T1 - Overview and error interpretation of estimating fractal parameters of pore space based on computer image analysis SP - 171 UR - http://czasopisma.pan.pl/dlibra/publication/edition/107927 T2 - Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi Polskiej Akademii Nauk ER -