Abstract
In this paper, image processing techniques are discussed for stress analysis of the photoelastic fringes. The image processing techniques include fringe sharpening, fringe multiplication, and phase measuring technique. Gradient descent process is used for fringe sharpening. In fringe multiplication, fringes are multiplied twice for limited fringe order. Phase measuring technique is used to separate isoclinics and isochromatics. The results of image processing techniques show that they are quite useful for stress analysis in photoelasticity.
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