Research Article

Detection of Surface Crack in Building Structures Using Image Processing Technique with an Improved Otsu Method for Image Thresholding

Figure 3

Illustrations of image enhancement using the proposed M2GLD approach: (a) original image and (b) the histogram of the original image; (c) enhanced image and (d) the histogram of the enhanced image.
(a)
(b)
(c)
(d)