An Efficient and Self-Adapted Approach to the Sharpening of Color Images

Figure 14

𝜃_eth=7 for HVD. (a) The image “Neck” (504 × 700 grey image). (b) Edges detected by HVD with LPF. (c and d) Sharpened results by HVD with scaling factors 0.5 and 1.0, respectively.

(a) Original image

(b) Edges detected by HVD with LPF

(c) Scaling factor 𝑠=0.5

(d) Scaling factor 𝑠=1.0