What We've Learned So Far

To sum up:


  A pixel is the smallest unit of a digital image.

  A pixel can be any color and brightness.

  A digital image file contains all the pixels that comprise the image.

  A digital image file also contains data on how the pixels are arranged.

To these facts we can add a few that most people already know:

  All digital information is stored in the form of numbers.

  Numbers can be manipulated through mathematics.

  Computers are really good at math!

Now the fun begins...

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