Ok I will show very briefly the temporal evolution of the visual object.
The visual content must have a finite duration of about 8 minutes, in which the image follows a specific transformation that can be summarized in 3 parts. In the first the larva is closed, in the second the larva is half open and you can see the human being and finally the larva is totally open. All visual objects can coexist and there must not be a clear change of scene, but the public can interact by modulating some parameters that may be of interest: color and shape.
The different controls between arduino and processing have been resolved. Now, does anyone have any idea how to create such a visual object in Processing? Otherwise the alternative is to make a video and manipulate it with Processing.
Based on the parameters you’ve outlined, I would explore using transparency/alpha as a way to transition to each new image state.
Making a video and then manipulating it may be way more work than necessary to solve this problem.