Find the equivalent filter, H(u, v), that implements in the frequency domain the spatial o...

Find the equivalent filter, H(u, v), that implements in the frequency domain the spatial operation performed by the Laplacian mask in Fig. 3.37(a).

FIGURE 3.37

(a) Filter mask used to implement Eq. (3.6-6). (b) Mask used to implement an extension of this equation that includes the diagonal terms. (c) and (d) Two other implementations of the Laplacian found frequently in practice.

(3.6-6)