To compare the Velodyne scanners with a line scanner for shadowing, click here.
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A single FARO setup similar to the below. As you can see you have large shadows behind cars and trees.
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Two FARO's in a butterfly setup similar to the below. As you can see you have much less shadow as a result of using two FARO's set up at 30 degree tilt and a butterfly setup.
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Looking from the top down with a single FARO setup. As you can see you have large shadows behind cars and trees.
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Looking from the top down with two FARO's in a butterfly setup. As you can see you have much less shadow as a result of using two FARO's set up at 30 degree tilt and a butterfly setup.
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Notice the drastic reduction in shadowing from the Velodyne scan.
*Note: The top picture shows the amount of shadowing that can and will occur using any single line, single scanner mobile system. It is very similar to the shadowing from a static scan (hence the many setups required with a static scanner to capture most scenes). Using a dual, butterfly pattern with single line scanners will significantly reduce the amount of shadowing but it will still not be nearly as complete as the Velodyne HD32 with 32 lasers in a 40 degree FOV.
*Note: The top picture shows the amount of shadowing that can and will occur using any single line, single scanner mobile system. It is very similar to the shadowing from a static scan (hence the many setups required with a static scanner to capture most scenes). Using a dual, butterfly pattern with single line scanners will significantly reduce the amount of shadowing but it will still not be nearly as complete as the Velodyne HD32 with 32 lasers in a 40 degree FOV.
