Research Article

Fractional Directional Differentiation and Its Application for Multiscale Texture Enhancement

Figure 5

Texture information enhancement by FDD operator. (a) original image, (b) 𝑣 = 0 . 2 , (c) 𝑣 = 0 . 1 , (d) 𝑣 = 0 . 1 , (e) 𝑣 = 0 . 3 , (f) 𝑣 = 0 . 5 , (g) 𝑣 = 0 . 6 , and (h) 𝑣 = 0 . 7 .
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(h)