09/29 Notes Chapter 2¶
Project 2 is 6 lines of code!
Fingerprints¶
Questions to ask
- Anatomy
- Classification
- Segmentation/ Detection
- Feature Extraction
- Matching/ Compare
There are 3 levels of Fingerprint scanning
- Level 1 only needs scanner with 250dpi (dots per inch)
- Can normally only extract core and delta points
- Can extract Orientation Field (project 2 is this)
- Level 2 250 - 500 dpi
- Minutiae Points are revealed here (place where ridges break or abruptly chang, etc...)
- (x, y, theta)
- Level 3 1000 dpi
- Get shape of ridges and contours
- See sweat pores
- Not used in commercial applications, used in crime scene investigations (latent prints)