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As far as I know the "google maps" data is used for things like road locations, stop signs, and other traffic marker information. Their primary mapping data so
by Game_Ender 13y ago
As far as I know the "google maps" data is used for things like road locations, stop signs, and other traffic marker information. Their primary mapping data source is based on Velodyne data itself. You also have to think storage needs, would it really have 4-6TB storage array for just a few hour drive?
I saw the tech lead of the project talk about 1.5 years ago. He said the primary sensor was the Velodyne, followed by radars. The only use for the camera mentioned is detecting stop light colors. At that time their main computer was a quad core machine, processing that much data sounds beyond it's limits as well.
- grinich 13y agoJust because they're capturing it doesn't mean they're processing all of it immediately. This kind of data is great to keep around for simulations when you return home. Having ~10TB onboard storage isn't crazy.
- Schwolop 13y agoFrom what I gather, they are capturing the velodyne data and turning it into a thinned point cloud of the areas of the USA in which they drive. Within this point cloud they can then do effectively a least-squares fit of the real-time view into the historical view and get another data source for localisation. Of course, there's GPS/IMU fusion too, but this sort of SLAM approach is fairly robust under GPS loss so combining them all in a filter is pretty standard practice. The scale of Google's data dwarfs most research projects, however.