Rgrains is an image analysis tool for particle shape characterization. It extracts contours, measures features like roundness, area, circularity, major/minor axis, and outputs results as images or tables. Available in CUI, GUI, and MATLAB versions.
image analysis shape matlab particle area circularity matlab-gui grain roundness rgrains major-axis-length minor-axis-length
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Updated
Dec 27, 2025 - MATLAB