1. Biometrics & Security Tutorial 5

2. 1 (a) Understand two stages (Enrollment and Authentication) in a fingerprint system. (P6: 12)

4. 1 (b) In the pre-processing stage what should be done? (P6: 15-17)

8. 1 (c) Understand the two primary methods for fingerprint sensing: inked and live scan and compare the different live-scan fingerprint technologies. (P6: 20-27)

12. 1 (d) Please understand the feature definitions in both P6: 29-31 (Global feature) and P6: 36-37 (Local feature).

13. 4. Which features are used as global and local features, respectively? Could you find them in the given fingerprint image (P7:37)? (Left Loop, Delta point : 1; Bifurcation: 4 and Ending: 3)

14. 3. In P6:35 six major classes of the overall fingerprint patterns are given. Please compare them and try to classify the other all fingerprint samples in P6:4, 9-10, 13-20, 44-49.

29. 1 (e) How many strategies can be used for fingerprint matching? Please compare their difference. (P6: 46-47)

31. Matching Strategies For (i=0;i<M;i++) For (j=0;j<N;j++) { If (a(i,j)==b(i,j)) S ab ++; }

34. 5. Please check the Minutiae matching in P6:47 and compute the matching score according to the Eq.(1) in P6:52. (26.9)

36. 2. Singular points consist of Core point and Delta point. In P6:32 we can use the directional map to find them (one Core point and two Delta points). Please think about how to make an algorithm to do so.

38. Fingerprint: Whorl Use normal direction as grayscale We only use 2 directions ( 0 O and 90 O ) 0000000 0111110 0100010 0101010 0100010 0111110 0000000 090 0 00 00 00000 00 00 0 0