Shape from heating: a two-dimensional approach for shape extraction in infrared images

Jean-Francois Pelletier; Xavier P. Maldague

doi:10.1117/1.601210

1 February 1997 Shape from heating: a two-dimensional approach for shape extraction in infrared images

Jean-Francois Pelletier, Xavier P. Maldague

Optical Engineering, Vol. 36, Issue 2, (February 1997). https://doi.org/10.1117/1.601210

Pulse-transient IR thermography enables detection and quantification of subsurface defects. However, defect detection can be perturbed by the geometry of the part, if not planar. A method is presented that, from a single IR image recorded at the end of the thermal pulse, enables one to evaluate the shape of a nonplanar part and then apply a correction on subsequent thermograms in the time sequence to increase the reliability of defect detection. The method uses some of the concepts of the ‘‘shape from shading’’ theory from the machine vision field.

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Jean-Francois Pelletier and Xavier P. Maldague "Shape from heating: a two-dimensional approach for shape extraction in infrared images," Optical Engineering 36(2), (1 February 1997). https://doi.org/10.1117/1.601210

Published: 1 February 1997

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