A COMPUTER-IMPLEMENTED METHOD AND A SYSTEM FOR CREATING A THREE-DIMENSIONAL MINERAL MODEL OF A SAMPLE OF A HETEROGENEROUS MEDIUM

摘要

An initial 3D microstructural image of at least a part of a sample consisting of at least one mineral is obtained. Then, a mineral distribution image of at least one part of the sample is obtained so that each obtained mineral distribution image at least partially overlaps with the obtained initial 3D microstructural image and spatial registration with the obtained initial 3D microstructural image is provided in overlapping regions. Then at least one local feature in each point of the obtained initial 3D microstructural image is extracted by a computing system. A correspondence is found between the extracted local features in each point of the overlapping regions in the obtained initial 3D microstructural image and the minerals in the corresponding points in the overlapping regions in the obtained mineral distribution images. The extracted local features in each point of the obtained initial 3D microstructural image and the found correspondence are used for segmenting the obtained initial 3D microstructural image. A 3D mineral model of the sample is created from the segmented initial 3D microstructural image.