CAD-to-CT Registration of Cylindrical Objects via Ellipse-Based Axis Estimation
Researchers have developed a novel two-stage method for accurately aligning CAD models with CT scans of cylindrical objects. This approach first identifies the object's rotation axis by detecting elliptical cross-sections in CT slices and fitting ellipses to their contours. The method then uses this axis to orient the CAD model and fine-tune its position for optimal overlap with the CT scan, achieving high precision without needing intensity calibration or feature matching. AI
IMPACT This method provides precise ground truth geometry for machine learning applications in industrial CT workflows.