Edge extraction in X-ray image based on COD of materials

We have performed a single X-ray image extract of three-dimensional shape information (edges and vertex) by using characteristics of a specific material with a specific size (thickness). We have used that fact that the intensity distribution X-ray images decreases around edge areas in the form of exponential function and used the least square method and the coefficient of determination value to extract edges. Here we could infer the effect of the penetration rate of X-ray on the coefficient of determination value according to the kind of material (Zn, Ti, A, and Si) and that the penetration rate and the coefficient of determination value are inversely proportional. We could also conclude the effect of the penetration rate of X-ray on the coefficient of determination value according to the size of the material (5, 10, 15mm) differs and the size and the coefficient of determination value are proportional.