关键词: 工业CT, 三维图像, 图像增强, 自适应平滑, 不连续性

Abstract: As one of the optimal Non-Destructive Testing（NDT） technology，without any contact，industrial CT system can detect the defect of the object quickly and accurately.In recent years，particularly the emergence of Cone-Beam CT（CBCT），the testing can be better executed according to the three-dimensional isotropic images generated by CBCT.However，the current 2D image enhancement algorithms can only suppress the noise inside the slice，have no access to the noise between slices，can not meet enhancement requirement of the 3D CT images.According to the characteristic of cone-beam CT images，a 3D adaptive smooth algorithm is proposed in this paper.The results show that，with the introduction of the information between slices，the noise can be suppressed further without loss of the edge information，and the performance of this algorithm is obviously better than 2D smooth algorithm.

Key words: Industry Computed Tomography（ICT）, 3D image, image enhancement, adaptive smoothing, discontinuity