(1) How to avoid "line artifacts" for multi-line laser scanners?
(For Raptor/Raptor Pro/RaptorX)
a) Don't set the resolution too small. A resolution of 0.1mm can capture enough detail for most objects. If the resolution is too small, the scanned model will have more details but is also prone to line artifacts.
b) Use appropriate camera exposure time and laser intensity. Ensure the laser lines and marker images have sufficient brightness, but avoid overexposing the laser lines (overexposed parts will appear red).
c) For parallel lines, scan the same area in a crosswise manner.
d) Scan a sufficient number of frames to make the model quality color map turn green.
(2) How to scan a whole car?
a) Place enough markers on the car body.
b) For RaptorX/Raptor Pro, you can use the Global-Marker scan mode to scan the markers firstly.
c) After that, switch to the point cloud scanning mode to scan the surface of the car.
d) For such large objects, cross lines should be used.