Implementing Fusion Technique Using Biorthogonal Dwt to Increase the Number of Minutiae in Fingerprint Images

Algorithm 2

Determining the translational difference between two-point sets.

1. Denote with H 2D histogram with sizes (2d+1) x (2d+1) with initial values 0, counter t =0.

2. Select any point from the reference image with coordinates (x_r, y_r) and a random point from the image template with coordinates (X_t, Y_t).

3. By solving the equations the values t_x andt_y are determined.

4. If |tx| < d and |ty| < d, then ++H(t_x + d, t_y + d).

5. If ++t < t_m go to step 2.

6. Denote with (t_xmax, t_ymax) peak histogram coordinates, return t_x = t_xmax -d and t_y = t_ymax -d.