Landey
lvl.4
Germany
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No Original Thought Posted at 4-3 00:26
Agree on both points, though the height thing is a difficult one to solve.
A database of ground levels and ground structures (because height above a building is actually more important than height above the ground it's built on in some/most cases) would be enormous and almost impossible to keep up to date.
Yep!
I also wouldn't rely on elevation databases, not at all. Just look at the Google data used for 3D rendering - masses of faults, rivers, lakes and streets flowing 90 ° upwards, "holes" in the ground, real hills being perfectly flat, etc.
And we can safely presume a tremendous amount of manpower and money flowing into gaining and processing that data.
And even if we had 100 % precise elevation data, sudden changes (like a fallen tree or a car parked on a meadow) wouldn't show up. So - no way.
For being able to safely detect elevation changes, it would need a combination of GPS, barometer, ground radar, sonar, infrared/laser and optical cameras. Given the current limits of technology and weight, I don't expect this coming soon. ;) |
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