@amilcarlucas Continuing the discussion from DO_CHANGE_SPEED use case:
What algorithms can I use for precision landing with a camera facing downward? Also, the area I will operate in is pretty small and the ground under does not change much, Is it still possible?
You have a lot to learn, it is a complex topic. Even if I suggest an algorithm for you.
I suggest you start taking some courses on machine vision to learn the basics and find the most suitable method for your specific requirements.