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Very new to Lidar but I am seeking to use Lidar in a project and have a Spinning 2d unit I made with garmins v3HP but. Now I am caught up on mapping, I was wondering if it was possible to do things like what is shown in the image with a spinning 2D. EDIT: I forgot to mention if anybody has any good resources on Lidar it would be a great help to me as I am newenter image description here

Thank you.

Luke Callan
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  • it is unclear what the image is supposed to demonstrate ..... the color coding in the image is not obvious .... so it is unclear how the image relates to the use of Lidar – jsotola Dec 01 '18 at 22:35
  • Hi jsotola, It seems I have found a solution to my problem someone else pitched in, but I found that online under a lidar mapping article/segement on lidar and it was under a "point cloud map". I was curious if this was possibile with my as someone pointed out "lidar lite" rangefinder. – Luke Callan Dec 02 '18 at 19:56
  • here is an image that more closely represents what you are trying to do .... https://ai2-s2-public.s3.amazonaws.com/figures/2016-11-08/ef199e8e4fdd3d3c0f78b62eb1b35ff6afcc2c3f/0-Figure1-1.png – jsotola Dec 03 '18 at 01:39
  • That is actually what I had in mind, thanks. – Luke Callan Dec 03 '18 at 20:12

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It is possible to create a pseudo 3D lidar with a 2D one. You have to add a motor or more specifically a servo that tilts the LIDAR. You can then continuously tilt the LIDAR and just integrate all the measurements together to form a 3D point cloud. If you look at this paper you can see an example of how they set this up in Fig 2. You can also use that paper as a reference for building your LIDAR mapping software.

Other papers you can take a look at with open source implementations are BLAM, HDL graph SLAM, and many more just google LIDAR SLAM or LIDAR mapping.

Also you do actually need a proper 2D LIDAR to do any sort of mapping. From your post it looks like you have this https://buy.garmin.com/en-US/US/p/578152 which is called a LIDAR-lite, but is basically just a range finder.

edwinem
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  • I just read through some of those, thank you. And that psuedo 3d idea doesn't seem to bad on paper. But by your comment you mean it can only do range finding? What do you recommend as a proper Lidar, I don't mind spending a fair amount of cash on one. – Luke Callan Dec 01 '18 at 01:59
  • Yes the lidarlite will only give you range. Problem with Lidars are that they are quite expensive. In the past I have had some success with https://www.robotshop.com/en/hokuyo-utm-03lx-laser-scanning-rangefinder.html . If you need something cheaper this seems to be the cheapest 2D lidar https://www.robotshop.com/en/hokuyo-urg-04lx-ug01-scanning-laser-rangefinder.html – edwinem Dec 01 '18 at 20:37
  • The one you listed is fair enough for me. Im okay with spending anywhere from 1,000-1500. Thank you! But some I'm seeing are quite expensive I do agree, thanks again for all your help. – Luke Callan Dec 01 '18 at 22:22