Fractional Directional Differentiation and Its Application for Multiscale Texture Enhancement

Figure 9

The vertical projections of gray scale of (a) and (d) in Figure 8. (a) the vertical projection of gray level of original image (a) in Figure 8, (b) part of (a), (c) the vertical projection of gray level of original image (d) in Figure 8, (d) part of (c).

(a)

(b)

(c)

(d)