How to program with the Blockly Image Task tool
Example 1 - Make an image black and white:
In a black and white images the three colour components have to have the same value. Here is one algorithm:
- Get the three values for each pixel
- Add them together and divide by three
- Replace the values of all three colour components with this average value.
Here is a program that would achieve this. Press run to see it in action:
Try this out in a new window ...
Images Tutorial Start
Example 1 - Make an image black and white
Example 2 - Make another black and white image
Example 3 - Make the flowers yellow
Taking things further
The Raspberry Pi Foundation runs the UK Bebras Challenge. Discover free teaching resources, tools, and expert support for computing education at raspberrypi.org.