Quality Optimization of Cone-beam CT Reconstruction of Porous Ceramics

With the employment of cone-beam CT detection system to scan and reconstruct porous ceramic samples, the influence of process parameters such as filter plate position, tube voltage, rotation axis tilt correction and number of projection on the quality of reconstructed CT images was discussed. The results show that filtering on the detector side can reduce the scattering of the sample and improve the signal-to-noise ratio and contrast of the images. Compared with the images reconstructed at 85 and 140 kV, the images at 130 kV have the lower noise and higher contrast and clarity. Correcting the rotation axis by −1.06° can reduce the artifacts and geometric distortion of the reconstructed CT images. In addition, with the number of CT reconstruction increases, the signal-to-noise ratio, contrast and clarity of the reconstructed image are improved. Adjusting the process parameters can improve the quality of CT reconstructed images, ensure the accuracy of defect detection and micro-morphology analysis on porous ceramics, expanding the application of CT technology in the field of ceramic material detection.