抄録
Nowadays, industrial X-ray CT scanners have become powerful non-destructive and non-invasive tools for various applications in research, production and quality insurance. Since the performance of industrial X-ray CT scanners is considerably improved, there is an increasing demand for achieving accurate surface reconstruction of measured objects for dimensional inspection of mechanical parts. In this paper, we propose a novel method that reuses X-ray projection images, or a sinogram, to estimate the shape of real objects by fitting silhouette-lines of CAD polygonal mesh of real objects to the sinogram. Since there is no need to make CT reconstruction, we expect to get rid of the influence of CT artifacts such as beam hardening, cone-beam artifacts, etc., and obtain more accurate measurement results.
