I suspect that the with the current electrical system on airbuses, the emergency electrical configuration wouldn't have enough power to run all those image processing computers at the very least (dual engine failure would cause this). However that could be resolved with additional battery capacity.
A more likely cause of automation failure would be failure or disagreement in the various sensors on the plane. These are typically triple redundant, but there have been cases where, for example, all the pitot tubes ice over and airspeed indications are lost. There are ways to deal with this but they're not currently programmed into the autopilot.
Other possible causes include failure of major flight controls requiring workarounds - eg, dealing with a stuck rudder with deliberate asymmetric thrust.
That being said flight control issues can probably be dealt with, if necessary. The real problem is with dealing with ambiguous situations where you have to weigh risks.
Consider: your radios are out. Per standard procedure you should proceed on your flight plan to the final fix and hold until your scheduled arrival time. However, fuel consumption is high - you're not sure, but you might have a slow fuel leak, and your destination has dicey weather. Do you divert without clearance or risk that you might be marginal on fuel at your scheduled arrival time?
A more likely cause of automation failure would be failure or disagreement in the various sensors on the plane. These are typically triple redundant, but there have been cases where, for example, all the pitot tubes ice over and airspeed indications are lost. There are ways to deal with this but they're not currently programmed into the autopilot.
Other possible causes include failure of major flight controls requiring workarounds - eg, dealing with a stuck rudder with deliberate asymmetric thrust.
That being said flight control issues can probably be dealt with, if necessary. The real problem is with dealing with ambiguous situations where you have to weigh risks.
Consider: your radios are out. Per standard procedure you should proceed on your flight plan to the final fix and hold until your scheduled arrival time. However, fuel consumption is high - you're not sure, but you might have a slow fuel leak, and your destination has dicey weather. Do you divert without clearance or risk that you might be marginal on fuel at your scheduled arrival time?