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Video understanding engineer here. Tunnels and underpasses are the worst. They are a pain in the ass, because shadows mess with all the edge detection and moti
by roguecoder 4y ago
Video understanding engineer here.
Tunnels and underpasses are the worst. They are a pain in the ass, because shadows mess with all the edge detection and motion models and anything else visual. Humans compensate by thinking "I'm in a tunnel: things are weird." But without a reasoning model that can take context into account, the computer is stuck.
In the video from behind, you can see the shadow ahead of the car on the floor of the tunnel that it carefully stops just before it would hit. A person would notice that EVERY OTHER car had driven straight through the thing it thought was an obstacle, but that is also context this car isn't going to take into account.
- deleted 4y ago[deleted]
- sokoloff 4y agoInteresting observation. I worked on autonomous vehicles (in vision) at Daimler in 1991. During one of our test sessions, on drying pavement, the vehicle abruptly slammed on the brakes and refused to proceed past a point where the vision system could see a symmetric about a centerline set of horizontal edges on the pavement. It tightly fit our (hand-coded, being 1991) model for a car ahead. We had to revert to manual control and drive back to our staging area and wait for the track (set of runways and taxiways at a disused airbase) to finish drying. Obviously, the state of the art has significantly improved since then, but some fundamental risk of misinterpretations could easily remain.
- somedude895 4y agoThere are so many tunnels in Switzerland, that using AP is a huge pain. But at least it keeps me attentive and ready to take over at all times.
- dkjaudyeqooe 4y agoIs this sort of problem an argument for lidar or similar? I'm assuming you're describing a camera only system.