Oceaneering International, Inc.
Estimation of material loss from 2D digital radiographs using Double Wall Single Imaging (DWSI) Technique

Abstract:

Material loss may be estimated from 2D digital radiographs using double wall single imaging (DWSI) technique using a system for estimation of material loss from 2D digital radiographs comprising one or more calibration samples, each with one or more known defects; one or more radiofrequency emissions sources; one or more radiofrequency emissions detectors; one or more radiofrequency emissions processors operatively in communication with at least one radiofrequency emissions detector; and software which is used to process a background image representative of a background proximate a structure which is obtained and radiofrequency emissions emitted the structure at a predetermined location. The radiofrequency emissions detector detects radiofrequency emissions reflected from the structure and the radiofrequency emissions processor used to further process the radiofrequency emissions by creating a two-dimensional image of the detected radiofrequency emissions from which the background image is subtracted using median filtering.