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20 June 2002 Advances in digital speckle radiography
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Digital Speckle Radiography (DSR) is a measurement technique which uses flash X-rays combined with the computer analysis used in digital speckle photography. The technique has proven to be particularly powerful in the study of internal deformation fields, in both 2- and 3-dimensions, in high-speed events such as ballistic and explosive studies. In this paper, we present details of a new stereoscopic DSR apparatus. A new approach to the pre-processing of digitized radiographs prior to the displacement analysis results in a significant improvement in accuracy. An accurate determination of the scaling factor between the sample and the radiograph is demonstrated, and corrections for the Gaussian intensity profile of the X-ray beam included.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Stephen G. Grantham and John E. Field "Advances in digital speckle radiography", Proc. SPIE 4777, Interferometry XI: Techniques and Analysis, (20 June 2002);

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