Hi, is there any way to provide hokuyo laser, the data of z axis to create a 3d map without use of imu, motor?
Actually laser is providing x y data only. If i edit z axis data like z=1,2,3,...instead of z=0 in .pcd file then can it make 3d map.
Asked by ARCHANA on 2016-02-17 05:50:18 UTC
Answers
Hi Archana,
Could you explain a bit more what you're trying to achieve. The Hokuyo LIDAR needs to move (or the subject needs to move) in order to create a 3D scan. I've recently built a system like this that has the Hokuyo unit mounted on a tilt platform.
What sort of setup do you have?
Asked by PeteBlackerThe3rd on 2016-02-17 08:50:48 UTC
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I only have hokuyo lidar with me and i want to create a 3d map with that. I created 2d map with that now i want to know how to create 3d map with only laser. I want to know is it possible to build 3d map with laser only. If yes then how to provide z value.
Asked by ARCHANA on 2016-02-17 10:24:15 UTC
what type of tilting platform you are using? Can you please explain me step by step how can i create a 3d map?
Asked by ARCHANA on 2016-02-17 23:40:19 UTC
It is possible to set up two Hokuyo LIDARs, one mounted scanning in the horizontal plane and one mounted at a right-angle scanning in the vertical plane. Together, they produce 3D scans. I do not have any idea how this would be set up in terms of ROS software, but it should be possible to do it. Autonomous drone builders would have tried this 3D mapping in order to have a drone fly autonomously through a window in a wall as part of a robot challenge.
Asked by dchang0 on 2016-02-17 12:33:29 UTC
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Thanks, That means it is not possible to build 3d map with only one hokuyo laser by providing it the z axis data by ourself. I need some extra hardware like another hokuyo or motor?
Asked by ARCHANA on 2016-02-17 22:56:36 UTC
Actually, it IS possible to use ONE Hokuyo. There was a product our team was examining as a possible 3D-mapping solution here: http://www.3dlasermapping.com/zeb1-indoor-mapping/
They stick a Hokuyo UTM-30LX on a bobble stick and convert that into a 3D point cloud. Watch the video. Very expensive!
Asked by dchang0 on 2016-02-17 23:16:20 UTC
Here is another clever way they do a 3D scan with just one Hokuyo--rotate the Hokuyo! http://geoslam.com/products/zeb-revo/ We examined this too and found it to be far cheaper to just buy two Hokuyos mounted at right angles (we have not done so yet).
Asked by dchang0 on 2016-02-17 23:21:47 UTC
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