3. Digital image correlation
3.1 2D-2C analysis
3.1.1 Principle, displacement measurement
The correlation technique (figure
7
) consists in matching two digital images of the view of an object's plane surface, in two distinct states of deformation, a so-called "reference" state and a so-called "deformed" state. Matching is carried out on sub-domains of the images, forming a virtual grid of measurement points. For each sub-domain D whose position
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Digital image correlation
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