Fig. 11
From: A two-stage defect detection method for unevenly illuminated self-adhesive printed materials
The effects of brightness correction and filtering. (a) Gray histograms of the V-channel images in the HSV images corresponding to the original image, reference image, filtered image, and Rectified image. (b)–(e) The first column figures represent Locally enlarged subimages corresponding to the above images, respectively. The second column figures are the 250th row profile lines corresponding to the first column subimages. The third column figures are the local texture regions corresponding to the first column subimages.
