Fig. 13

Segmentation results on the coin image 280 × 393 corrupted by the Gaussian noise (0, 0.010). a Original image. b Noisy image. c Ground-truth. d Bernsen’s method. e Niblack’s method. f Sauvola’s method. g Bradley’s method. h Chou’s method. i Valizadeh’s method. j Wei’s method. k 2DOtsu. l FCM_NLS. m 2DWFPE. n Our method with T = 400, α = 30