3 ms·
> I don't get it, why is it so hard to detect stationary objects in front of you? This could only be said by someone who has never worked on the problem. I don
by megy 8y ago
> I don't get it, why is it so hard to detect stationary objects in front of you?
This could only be said by someone who has never worked on the problem. I don't get it, why is programming so hard, you are just telling the computer exactly what to do?
- maxxxxx 8y agoIt seems a legitimate question. I have never worked on this problem either but I would have thought that detecting a stationary object right in front of the car should be one of the basic and simpler functions of a self driving system. Obviously this doesn't seem to be the case but maybe you can enlighten us why this is hard?
- bobsil1 8y agoFalse positives from road signs, overhead signs, radar-reflective trash. Commonly used radars have limited vertical discrimination.
- lagadu 8y agoWhy would the radar even be pointed at areas several meters above the car? Maybe radars can't be pointed at a narrow space, if that's the case why not use lidar instead?
- bobsil1 8y agoMost radars aren't coherent like laser, beams spread out. Also radar measures speed more accurately than location. Lidar only used by R&D + taxi services, price not reasonable for car buyers yet.
- dingaling 8y agoInstead of being condescending this would have been a good time to explain the challenges A static object has a negative Doppler shift rate linearly in proportion to vehicle speed and a y-axis position greater than zero but less than four metres. What makes that difficult to detect or distinguish?