ACTIVE CONTOUR MODEL FOR NONDESTRUCTIVE EVALUATION OF STRUCTURES USING SPECKLE INTERFEROMETRY

Speckle interferometry - an electronic version of holographic interferometry - displays a shape of structural mode for the nondestructive evaluation of structure integrity. Low-frequency preprocessing and histogram equalization enhance contrast and compensate equipment distortions, which are in the images displaying structural mode shapes. The Independent Component Analysis of RGB-components of mode shape image as a whole produces contrast-enhanced shape images and gives an opportunity to extract its local features induced by cracks. As shown, the crack edge is detected precisely enough by the active contour model.

• Kukharenko B.G.

• Прикладные науки. Медицина. Технология

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