1. Colors & Numbers 12345678901234567890123 Shreekanth Mandayam, Gina Tang, Scott Papson, Dan Barrot, Joe Oagaro and Rick Eckert Electrical & Computer Engineering Rowan University Glassboro, NJ 08028 July 9, 2003

2. Learning activities Making colors Finding colors Changing colors

3. How do they get all those colors? All shades of color that you see on a computer screen are made up by adding 3 primary colors G R B

4. Colors = Numbers The amount of each primary color in a shade = a Number!!! G= 0 to 255 R= 0 to 255 B= 0 to 255 “Redness” “Greenness” “Blueness” 0 = No red 255 = Bright red 0 = No green 255 = Bright green 0 = No blue 255 = Bright blue

5. How many shades of color? Go to http://www.ringthis.com/java/ colortest/ and create your own shade of color. Experiment! http://www.ringthis.com/java/ colortest/ How many shades of color can you create using 3 numbers for each shade? (an R-number, a G-number and a B- number)

6. Finding colors Get pictures using a digital camera or scanner into the computer Find the amount of redness, greenness and blueness in each picture ColorCube ColorAnalyzer

7. Changing colors Go to http://www.colorcube.com/play /assist/assist.htm http://www.colorcube.com/play /assist/assist.htm Change the colors in different parts of the picture

8. What’s the use? Radiolucent (Dark = small numbers) Radiodense (Bright = Large numbers) Film region Risk factor for developing breast cancer

9. What’s the use? Radiolucent (Black = 0) Radiodense (White = 255) Film region Risk factor for developing breast cancer