Fig. 2. Masking operations: (a) band image at 685 nm; (b) image after binarization using histogram valley method; (c) image after erosions; (d) image after filling holes and further erosion; (e) image mask obtained after particle removing.
Fig. 2. Masking operations: (a) band image at 685 nm; (b) image after binarization using histogram valley method; (c) image after erosions; (d) image afterfilling holes and further erosion; (e) image mask obtained after particle removing.