Obtain equations for Gaussian and ideal notch reject filters in the form of Eq. (4.10-5).F...

Obtain equations for Gaussian and ideal notch reject filters in the form of Eq. (4.10-5).

FIGURE 5.9

Results of selecting the wrong sign in contraharmonic filtering. (a) Result of filtering Fig. 5.8(a) with a contraharmonicfilter of size 3 × 3 and Q = −1.5. (b) Result of filtering 5.8(b) with Q = 1.5.

FIGURE 5.8 (a) Image corrupted by pepper noise with a probability of 0.1. (b) Image corrupted by salt noise with the same probability. (c) Result of filtering (a) with a 3×3 contraharmonic filter of order 1.5. (d) Result of filtering (b) with Q = −1.5.

(4.10-5)