Automated Processing of Micro-CT Scans Using Descriptor-Based Registration of 3D Images
Under the study, 6 bovine femur heads and overall number of 70 dissected cuboid specimens of cancellous bone were intended for micro-CT. Descriptor-based approach was used for 3D images registration from different resolutions using translation and rotation invariant local geometric descriptors based on 3D Laplace filter and nearest neighbours identification using 6-dimensional scalar vectors. Presented approach is simple and effective and can be processed using macros for ImageJ tool. Obtained accuracy of registration with error lower than 1 pixel allows for further analysis of bone mechanical properties, enabling precise determination of orientation for anisotropy and therefore the study of behaviour of the bone under load.
KeywordsMicro-ct Image processing Volumes registration Bones
J. Kamiński. acknowledges benefit from Ph.D. scholarship by Marian Smoluchowski Cracow Scientific Consortium – KNOW.