CSC151 2010S, Class 11: Transforming Colors

Overview:
* Lessons from yesterday's lab.
* Computing new colors from old.
  * Sam's summary
  * Q&A
* Lab

Admin:
* Reading for Friday: Transforming Images.  
  Note that the reading is on the schedule for Monday, 
  but I'd prefer you to do it for Friday in case Mr. Kluber 
  is unable to make it to class.
* EC for Convo on Thursday
* EC for CS Extra on Thursday at 4:30 in 3821: Graphics
* EC for CS Table on Friday: Code Review (info to be emailed soon)
* Exam 1 distributed.

Yesterday's lab
* Goals
  * Get you accustomed to the RGB color model
  * Get you accustomed to the numbering of positions in raster graphics
  * Help you remember some of the basic operations.
* Shift-ctrl-E expands
* I don't know why sometimes you can't see changes to pixels

Computing new colors from old
* Useful to built palettes of colors
* Many image transforms are simply "use this
  color transform for every pixel"

Lab