Hi, I have received my MetroX a couple of days ago and I have problems with my scans. For some reason I get a checkerboard like pattern on my scans, especially visible in reference point tracking mode.
If I fuse it, it first looks like this:
What mode was the scan taken in (full field? cross lines?). How many frames?
A certain amount of artefacts are normal after fusion and they should be sorted out after doing overlap detection and isolation detection.
It’s been captured in full field mode with reference point tracking, general object mode and 360 frames.
Overlap detection and isolation detection don’t help. Some of the artifacts disappear, but 80% of them are still there (if the fusion is not optimized). If I optimize the fusion, then the results improve, as you can see in my pictures from yesterday, but then isolation and overlap detection don’t do anything to the main scan. Only the marker dots are getting deleted.
I’d like to avoid that for as long as possible, as that would invalidate the factory calibration. It is pretty good according to the testing report (-0.02mm of error) and, from my knowledge, cannot be restored. Please correct me if I’m mistaken though.
I would do a calibration before the scan because I want it to be precise. Different temperatures and humidity alone can distort the result. Not to mention the transport from China to you.
I tried recalibrating, but it didn’t help. If anything, it might have made it even slightly worse. So this doesn’t seem to be the problem. I noticed that if I increase the point distance (all pictures at 0.05mm point distance if not otherwise specified), the artifacts gradually disappear, but I also lose detail, it essentially just looks smoothed.
The project example in Revo Scan 5 MetroX looks much better than my results and was scanned with the exact same settings as my scans. It also appears to be a slightly different bust:
According to the meta data of the scan in Revo Scan 5 MetroX it is scanned with a MetroX. It even states the serial numer of the scanner that was used…
I only mention it so that you don’t put too much stock in the test project. It doesn’t even have raw data or a point cloud, just a mesh.
For what it’s worth, I also haven’t had a lot of luck with full field mode (auto or otherwise). Laser scans are pretty good though and steadily improving as I figure out what it wants me to do.