1. S. Mandayam/ ECE Dept./Rowan University Freshman Clinic II Spring 2005 Shreekanth Mandayam ECE Department Rowan University Digital Imaging April 19, 2005 http://engineering.rowan.edu/~shreek/spring05/froshclinic2/

2. S. Mandayam/ ECE Dept./Rowan University Plan Digital image acquisition Types of digital images Monochromatic TrueColor Digital Image Processing

3. S. Mandayam/ ECE Dept./Rowan University Digital Image Acquisition How do we acquire digital images?

4. S. Mandayam/ ECE Dept./Rowan University

5. Hurricane Fran, TIME Magazine, Sept. 16, 1996 Picture Taken by: GOES-8, NASA GODDARD SPACE FLIGHT CENTER

6. S. Mandayam/ ECE Dept./Rowan University

10. ABA E-13B Font

11. S. Mandayam/ ECE Dept./Rowan University

14. Biometrics

15. Types of Digital Images Monochromatic TrueColor

16. S. Mandayam/ ECE Dept./Rowan University Monochromatic Digital Image x y Gray Level f(x,y) Pixel = Picture Element

17. S. Mandayam/ ECE Dept./Rowan University Color Images R B G W M CY Mixtures of Light: Additive Primaries

18. S. Mandayam/ ECE Dept./Rowan University Color Palette All shades of color that you see on a computer screen are made up by adding the 3 primary colors for each pixel G R B

19. S. Mandayam/ ECE Dept./Rowan University RGB Values for Each Pixel G= 1 to 256 R= 1 to 256 B= 1 to 256 “Redness” “Green-ness” “Blueness” 1 = No red 256 = Bright red 1 = No green 256 = Bright green 1 = No blue 256 = Bright blue

20. S. Mandayam/ ECE Dept./Rowan University R+G+B R G B R G B R G B R G B R G B R G B

21. S. Mandayam/ ECE Dept./Rowan University Demo

22. How many colors? How many shades of color can you get in each pixel of a TrueColor image?

23. S. Mandayam/ ECE Dept./Rowan University Summary