3-D Information Detection of Weld Seam Facts in X-Ray Image Based on Knowledge
基于知识的X光焊缝缺陷三维信息提取

A method of 3-D information detection of weld seam facts bas ed on X-ray image has been developed. There are problems in the fact detection on the X-ray 2-D projection of weld seam, which the cracks along the projecti on direction and the concave holes on the surface of weld seam may be recognized as the air holes and the thin area facts(the cracks and nonpenetrate solder) ma y not be detected. The problems can be avoided in the method of 3-D information detection. The paper discusses the imaging approaches and the light models. An iterative algorithm of 3-D information detection of the facts has been construc ted. This algorithm has been simplified greatly by parameterization of the fact models using the form knowledge about the facts.