I have two lidar scans of the same room, both in an E57 format. I opened both scans in CloudCompare and they both seem to have TLS/GLB stations, and are otherwise very similar.
Both lidar scans could be imported to Reality Capture, but one of them doesn’t show up at all. One thing I noticed was that the model that wouldn’t show up is much darker in color when opened in CloudCompare. Could there be an intensity issue of some kind?
I would upload both files here but do not have the permissions to.
This is the google drive folder containing both the e57 point cloud which successfully imported and aligned in RC, as well as the file which imported but failed to show up.
Hi hlalto,
can you check the intensity values for both scans in CloudCompare?
RealityCapture uses intensity values in the range 0-1. But the preset settings are 0.03-1.
For this were used the same scanners?
Hello, the intensity values for the scan that did not import successfully had a range of 0 to 65535. I adjusted them using the scalar fields arithmetics tool to fit within the range 0-1 but the scan still did not show up when imported into RealityCapture.
This is what the scan looks like in CloudCompare. When I click to show the TLS/GBL stations, a green box at the center of the scan shows up with lines pointing downward. There are also intensity values below 0.03 as when I filter the intensity values below 0.03, the scan looks different with many lighter colored dots.
One more thing; when I set the colors to ‘RGB’ in CloudCompare, every point in the point cloud was black. The scanner used also did not have a camera and so I don’t think there was any color data captured. Could this be another problem?
It seems like the intensity values are much over 1:
Also, as you mentioned there are values under 0.03. So, that could be the issue. As I wrote, the intensity should be in the range 0-1, but if you have values under 0.03, you need to set this in the Reconstruction settings in Laser scan part.
