Light Becomes Numbers
Point a real camera at real things - and see what numbers the computer turns them into.
What you'll learn in this level
- That a picture is only numbers for the computer
- What the numbers for red, green and blue mean
- Why light changes the numbers a lot
Now it gets real
In level 1 you learned that a computer doesn't see pictures, only numbers. In this level you get to try that out with a real camera.
You'll get four missions - for example "hold something red up to the camera". Your device works out live how much red, green and blue it can see, and you watch the numbers while it happens.
How it works
- 1
Catch the light
Your camera sensor holds millions of tiny measuring points. Each one catches light.
- 2
Turn it into numbers
Each point becomes three numbers. One for red, one for green, one for blue.
- 3
Put it together
All the points together make a grid. That is exactly what the computer sees.
- 4
Work it out
Then an AI looks for patterns in these numbers.
Guess first, then experiment
You hold the same red apple in the sun, then in room light. Does the camera measure the same numbers?