This single still is from the widescreen version of ?Matriculated?, one of the Animatrix animated shorts. It has been considerably scaled back from the original material.
This image shows the output from a tiny broadcast drone one of the runner robots in Matrixulated, literally excremented out of its posterior. It sunk into the ground and then began transmitting this simplified image. The reason being that all these machines see reality and virtual reality as interchangeable. As one of the characters said, and its true "all reality is virtual to them". So, when summoning reinforcements, keep it as simple as possible.
Terrain is not an issue as all the robots have a form of SLAM real-time mapping on board. Show the rough shape of the island, the position of the island, a grid for scale, and the locations of the transmitter, two units on the island and the identified base(s). Simple, succinct, and short transmission. Any new information can be added as necessary, but it is uncluttered whilst still giving all the facts.
This is the type of high-level abstraction of any reality that is ideal when condensing it into a reporting format. No important detail is lost, but much is not included.
Link: Animatrix: Matriculated