Hi, I have encountered an issue which there are too few point cloud after importing the file into Reality Capture. My workflow is using GeoSLAM ZEB Horizon to collect road data and use GeoSLAM Connect to colourise the point cloud and export as e57. After that, I tried to import the file to RC, it only show a few point clouds. However, if I import to other software such as CloudCompare, it can show all of my point clouds. My goal is to convert point cloud data into mesh. Thank you.
Hi, I am not sure will this help you, but I had exactly the same issue with Trimble scans from Trimble Realworks. It was export settings. When I exported point cloud, it showed only one scan, and only small amount of points. I followed these steps.
First switch to Registration mode (drop-down list on the top row of the screen).
Select the scans you wan to export or the entire project in the WorkSpace window, then click the Export button under the Home tab.
A pop up window should show up asking if you really want to process all stations. Click yes.
A drop down list should open (Export Selection / Convert tzf scans of selected stations / Export Object Properties / ----).
Select “Convert tzf scans…”
Another pop up window should open asking you various parameters. Select the output format (E57),
select the folder where you want your e57s to go. Default values for sampling (by step 1) and filtering (none) will do.
Hope this will give you some ideas.
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Hi tshawong,
RealityCapture doesn’t support handheld laser scanners, as it needs to know the exact position during scanning (just terrestrial laser scanners are supported with ordered point cloud)
There is an option how to use handheld laser scans in RealityCapture: Create Ordered Point Cloud From Unordered | Tutorial
In CloudCompare do you see TLS/GLB positions for laser scan?
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Hi, thank you for your reply. I can see TLS/GLB positions in CloudCompare. So do I need to use Faro Scene since I have TLS/GLB positions?
Hi, how many of the TLS positions do you see? Also, can you check the intensity values of the laser scan in the CloudCompare?
But I suppose as it is the handheld scanner then you will need to use the FARO Scene.
Hi, as I import my point cloud file into CloudCompare, there are 698 scans, each scan have TLS/GBL positions inside. As for the intensity values, each scans range from 0 to 48830.
RealityCapture works with the intensities in the range 0 - 1, so this could be the issue. there.
Hi, but when I import the point cloud file into RealityCapture, in the “Feature Source” field I chose “Color”. Isn’t that ignore the laser intensity issue?
No, then the color will be used for feature detection. The intensity is still there.
Hi, is there any way to adjust the intensities value so that I can import it to RC?
Yes, there is. Mostly in the application for that scanner. Also, before scanning it is possible to set the value of the intensity in the scanner (but it also depends on the type of the scanner).
Also, there should be some other ways how to do it. I think there are some articles or forums about it on the internet.
I think the application for my scanner does not have this kind of option. I found out CloudCompare can change the intensity value, but my .e57 file contains 698 scans which is impossible for me to adjust that value one by one as I can’t find any way to batch process these data.
Update:
I tried to import the point cloud into RC, but the lsp are blurry. I provided my point cloud and images link to see if someone can help me to find out where is the problem.
Google Drive Link (e57 point cloud file and images): JCC-Chair.zip - Google Drive
Hi tshawong, can you pleas contact our support at support@capturingreality.com with this issue?
We are not allowed to download data from external sources, so it will be better to do it that way.
Alright, thanks. Just sent an email to the support.