I have to do a big internal building survey, and i found some info in the internet about handled lidar.
Did anyone use Geoslam products to tell us if they are accurate.
Is worth an investment int this product?
How much is that device?
If the registration is all cloud to cloud, I really doubt it is accurate enough to be worth an investment. We've worked with Trimble's TIMMs cart and that thing is amazing, this.. not so sure about.
Geoslam Zeb1 cost 22.000 dollars, i wait a demo unit to test it.
Trimble cart how much money costs?
Anyone who use geoslam products?
johnymal, post: 382145, member: 7096 wrote: Anyone who use geoslam products?
I sure do, in all kinds of scanning environments. So if you want rapid indoor floor to floor floorplans, or great heritage scans or powerful mining set ups then pick your output software, build your workflow and scan as fast as your little legs will carry you! The point clouds are very manageable, processing speed is same as scan walking time and the cost for unit and processing makes great business case. Any team member can scan and output.
So how does it reconcile the position of the different control points the clouds were recorded from?
newer cloud processing softwares are able to do cloud to cloud registration where they have algorithms to analyse the what have been picked up and register. The scans have to have at least 40% to get a decent registration but I personally experienced not very good registration. The better solutions would still be to use targerts and spheres.
FrancisH, post: 386375, member: 10211 wrote: So how does it reconcile the position of the different control points the clouds were recorded from?
Hi Francis:
1) Pre processing - visually within the scan using geo control with spheres (or teddy bears, or toilet tank floats, or......) and identified GPS points
or
2) At processing -co-registering scans with a point cloud of geo-located data, like the suggestion above in Cloud Compare or whatever software you are registering the initial scans in and line up a wall or well head or hydro pole
or
3) Post processing - mathematically by pick points in the registered cloud view and type in the co-ordinates from an existing total station or Geo located data - several tutorials on this as it depends on your end use software for the fastest workflow.
These scanners are good usable data from the immediate grab and go, in places obviously no tripod set up can go at a industry head shaking low price point for capability. Depending on how you manipulate the data on any given scan you can work on scans and access cm for a quick sweep of a building down to several mm accuracy on repeated scans of a particular surface. The Geo reference is attainable, and could be soon from an add on hardware "pin dropper" lining up with the REVO platform. The major use factor is mobile mapping, and the GPS is desktop attainable.
geopro_consultants, post: 381853, member: 9959 wrote: How much is that device?
If the registration is all cloud to cloud, I really doubt it is accurate enough to be worth an investment. We've worked with Trimble's TIMMs cart and that thing is amazing, this.. not so sure about.
I would suggest that you check in with Jonathan Coco or look at the scanner talk on Laser Scanning Forum, good impartial talk there. At $50K ($45 US?) Canadian with lifetime software and not limited to a cart the GeoSLAM is an obvious worthwhile machine. If you are tied to a cart for all your jobs and want that upper accuracy to mm and blisteringly fast, faster than your legs will carry you, go SurphSLAM - the fastest SLAM operations with a top notch Surphaser laser
There is a whole range of accuracy, mobility, price point etc once you hop off the tripod and use mobile point cloud range and access. Not worth it? Don't think so. Seen and worked with the unit? Yes, and have lots of users who do a good business with it as a core front line hardware.
Something about laser mappng outside, and inside of a two story 3000sq ft building - including the grounds (and the staircase) at mm- 1cm accuracy with registration and any filetype output in under 15 minutes in one scan convinces people. Oh yeah, by a high school summer student with no survey training.
Its not magic, its simply a very well developed handshake between a good quality laser head and a geo-spatial processing system.
I agree with richard the big disadvantage of GEOSLAM products is that you pust buy post process software geoslam desktop is i think to download data or buy credits its not worth if you have many buildings every week.
The $50k CDN scanner is a full kit of hardware AND software. No processing
fees or cloud - all your own desktop and not a big workstation either, i5 to i7 with 10Gig RAM up. You own everything in house forever.
The pay as you go is for clients as you say with small volume or need a lower initial capital outlay.
