In comparison with the calibration method based on 2D checkerboard, the proposed method achieved a lower RSRE (1.73 mm vs. Subsequently, we evaluated the performance of the proposed method on a recaptured verification dataset through RSRE and Chamfer distance (CD).
We applied repeat scan registration error (RSRE) as the cost function in the optimization process. We then proposed a two-step calibration method based on the pointset registration technique and nonlinear optimization algorithm to obtain the extrinsic matrix of the 3D scanner. We bound an optical marker to a 3D scanner and designed a specified 3D benchmark for calibration. This study proposes a novel method for calibrating the extrinsic parameters of a 3D scanner in the coordinate system of an optical tracker.
#Klib 3d scanner how to#
How to perform a reliable calibration between a 3D scanner and an external tracker is especially important for these applications. Three-dimensional scanners have been widely applied in image-guided surgery (IGS) given its potential to solve the image-to-patient registration problem.
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