A Method on the Estimation of Crack Width Using Image Processing Techniques in Concrete Structures

摘要

The method for evaluating the crack width of a concrete structure according to the present invention includes a method for evaluating the crack width of a concrete structure using an image processing technique, comprising: photographing a concrete surface with a camera (S100); Converting the captured image into a gray image (S200); Smoothing through a bilateral blur to remove noise generated in the captured image (S300); Applying an Adaptive Threshold Gaussian Constant to remove the influence of shadows and lighting reflections on the captured image (S400); Applying a Closing operation (Dilation-Erosion) to compensate for the effect of separating a continuous concrete crack object due to the Adaptive Threshold Gaussian Constant (S500) and to detect a uniform candidate region in an image to which binarization and Closing operations are applied. And applying the labeling algorithm (S600).