Automated X-Ray Inspection of Aluminum Castings

The experience gained with several approaches to automatic flaw detection in X-ray images of cast aluminum wheels is described. Basic problems are mentioned, and the applicability of segmentation methods to actual inspection tasks is demonstrated. The discussion focuses on the definition, extraction, and combination of local features for pixel classification. Results of pilot tests are described briefly. Further investigations are suggested, aiming at more generality of the methods and greater stability of the segmentation. >

[1]  M. J. Closier.  Automatic product analysis using X-rays , 1981 .

[2]  Emil Wolf,et al.  Principles of Optics: Contents , 1999 .

[3]  Robert A. Hummel,et al.  Feature detection using basis functions , 1979 .

[4]  J. Canny.  Finding Edges and Lines in Images , 1983 .

[5]  Jeffrey Wayne Eberhard,et al.  XIM: X-Ray Inspection Module for Automatic High Speed Inspection of Turbine Blades and Automated Flaw Detection and Classification , 1986 .

[6]  Linda G. Shapiro,et al.  Image Segmentation Techniques , 1984, Other Conferences.

[7]  Azriel Rosenfeld,et al.  Multiresolution image processing and analysis , 1984 .

[8]  Azriel Rosenfeld,et al.  Sequential Operations in Digital Picture Processing , 1966, JACM.

[9]  H. Decker.  A difference technique for automatic inspection of casting parts , 1983, Pattern Recognit. Lett..

[10]  M. Teague.  Image analysis via the general theory of moments , 1980 .

[11]  Manfred H. Hueckel.  An Operator Which Locates Edges in Digitized Pictures , 1971, J. ACM.

[12]  King-Sun Fu,et al.  A survey on image segmentation , 1981, Pattern Recognit..

[13]  Silvano Di Zenzo,et al.  Advances in image segmentation , 1983, Image Vis. Comput..

[14]  Azriel Rosenfeld,et al.  Cooperating Processes for Low-Level Vision: A Survey , 1981, Artif. Intell..

[15]  D Marr,et al.  Theory of edge detection , 1979, Proceedings of the Royal Society of London. Series B. Biological Sciences.

[16]  Paul Beaudet,et al.  Rotationally invariant image operators , 1978 .

[17]  Keinosuke Fukunaga,et al.  Introduction to Statistical Pattern Recognition , 1972 .

[18]  H. Strecker,et al.  A local feature method for the detection of flaws in automated X-ray inspection of castings , 1983 .