Study of deformations in objects under stress using digital image analysis

Alberto L. Geraci; Antonino Risitano; Giovanna A. Fargione

doi:10.1117/12.227881

1 December 1995 Study of deformations in objects under stress using digital image analysis

Alberto L. Geraci, Antonino Risitano, Giovanna A. Fargione

Proceedings Volume 2646, Digital Photogrammetry and Remote Sensing '95; (1995) https://doi.org/10.1117/12.227881
Event: Digital Photogrammetry and Remote Sensing '95, 1995, St. Petersburg, Russian Federation

Abstract

Deformations of a plate under different loading conditions were determined using remote sensing techniques. Imagery of the plate under investigation, acquired with a TV-camera based system, was analyzed, in order to measure electronically the average radiance over the plate through the digital numbers in each pixel. Moving from the knowledge of the radiant energy, it was possible to determine deformations, directly related to radiance, analyzing pixel-by- pixel image variations. Radiometric and geometrical considerations allowed determining deflections of the plate, after introducing a correction factor, to consider the response of the acquisition system. They were found in good accordance with those resulting from the use of traditional methods, and proved the working of the proposed technique.

Citation Download Citation

Alberto L. Geraci, Antonino Risitano, and Giovanna A. Fargione "Study of deformations in objects under stress using digital image analysis", Proc. SPIE 2646, Digital Photogrammetry and Remote Sensing '95, (1 December 1995); https://doi.org/10.1117/12.227881

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