How to program with the Blockly Image Task tool
Example 2 - Make another black and white image:
Again we need to make sure that the three colour components have the same value. Here is a simpler algorithm that produces a different black and white image:
- Get the blue values for each pixel
- Replace the values of all three colour components with this blue value.
The program would look like this:
Try it out here:
Try this out in a new window ...
Does the image look the same if you make all three colours have the same value as their Red values? What about if they are matched to their Green values?
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.