Good points made above. It is true that airplane autopilots do not use "Artificial Vision" to guide the airplane down to a landing or in other modes. Airplane autopilots are more just into speed control, pitch control, roll control, altitude control, heading control, turn coordination, velocity vector control, vertical speed control, yaw damping, and/or path control (ILS, GPS, etc.) depending on which autopilot mode you want to talk about.
No obstacle avoidance built in to autopilots. (TCAS requires the pilot to act on the warnings.)
This is indeed a lot simpler than the self-driving cars task of being able to make velocity vector decisions based on radar, visual, and acoustic (sonar) sensor-fusion correlations. Humans are usally pretty good at that. Artificial intelligence algorithms must be used to decide which way to steer the car, base on uncertain, noisy, or partially attenuated inputs.
And then, the computer operating systems and overall hardware/software reliability & availability must be very high to keep from killing somebody from time to time.