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Proceedings Paper

Radiographic inspection, defects segmentation, and multiscale analysis
Author(s): Mireille Lefevre; Francoise J. Preteux; Blandine Lavayssiere
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Paper Abstract

In radiographic inspection used by Electricite De France (EDF) for pipe control in nuclear power plants, pipe radiographs are digitized according to a well-defined protocol. The aim of EDF consists of developing a non-destructive testing system for identifying defects. In this paper, we propose an approach based on a multiscale analysis allowing to achieve simultaneously defect-enhancement and noise-filtering and leading to accurate defects segmentation using mathematical morphology. The principle consists of defining a one- parameter family of operators which are successively applied to the digitized images, after drift-removal. Equivalently, the multiscale analysis can be expressed as the solution of an evolution equation, whose analytical form is conditioned by the specific properties of the operators (e.g., mean curvature motion, affine scale-space). This results in a family of images with increasing smoothness and consistent edge preservation.

Paper Details

Date Published: 30 June 1994
PDF: 11 pages
Proc. SPIE 2300, Image Algebra and Morphological Image Processing V, (30 June 1994); doi: 10.1117/12.179184
Show Author Affiliations
Mireille Lefevre, ENST Paris and EDF (France)
Francoise J. Preteux, INT (France)
Blandine Lavayssiere, EDF (France)


Published in SPIE Proceedings Vol. 2300:
Image Algebra and Morphological Image Processing V
Edward R. Dougherty; Paul D. Gader; Michel Schmitt, Editor(s)

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