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Hi, is there any way to provide hokuyo laser, the data of z axis to create a 3d map without use of imu, motor?

asked 2016-02-17 04:50:18 -0500

ARCHANA gravatar image

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.

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answered 2016-02-17 11:33:29 -0500

dchang0 gravatar image

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.

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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?

ARCHANA gravatar image ARCHANA  ( 2016-02-17 21:56:36 -0500 )edit

Actually, it IS possible to use ONE Hokuyo. There was a product our team was examining as a possible 3D-mapping solution here:

They stick a Hokuyo UTM-30LX on a bobble stick and convert that into a 3D point cloud. Watch the video. Very expensive!

dchang0 gravatar image dchang0  ( 2016-02-17 22:16:20 -0500 )edit

Here is another clever way they do a 3D scan with just one Hokuyo--rotate the Hokuyo! 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).

dchang0 gravatar image dchang0  ( 2016-02-17 22:21:47 -0500 )edit

answered 2016-02-17 07:50:48 -0500

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?

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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.

ARCHANA gravatar image ARCHANA  ( 2016-02-17 09:24:15 -0500 )edit

what type of tilting platform you are using? Can you please explain me step by step how can i create a 3d map?

ARCHANA gravatar image ARCHANA  ( 2016-02-17 22:40:19 -0500 )edit

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Asked: 2016-02-17 04:50:18 -0500

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Last updated: Feb 17 '16