Determination of Geometric Parameters of Cracks in Concrete by Image Processing

Figure 1

(a) Two experimental setups: 1: experimental sample with cracks; 2: Nikon Camera D810; 3: Raspberry Pi camera; 4: halogen lamps; 5: a binocular microscope; 6: 360° rotatable stage; 7: height control stage; 8: a monitor; 9: optical table. (b) Equivalent optical scheme of the experimental setups.

(a)

(b)