User`s manual
Scanning Modes for Rescanning
You can choose the same scanning modes for rescanning and line scanning as you can for basic scanning.
Scanning using plane scanning -- Plane rescan and plane line scan
Scanning using rotary scanning -- Rotary rescan and rotary line scan
What follows is a general guide for using these selectively.
Rescan
When you’re rescanning areas that could not be scanned
Normally you choose plane rescanning. When the scan object has a complex shape, it may be a good idea to use
plane rescanning to perform overlapping scanning, changing the angle between each scanning pass.
Note, however, that rescanning is not eective in cases where the laser beam cannot reach the area from any
angle.
When you’re rescanning a specic area at a ne scanning pitch
It may be a good idea to perform rescanning in the same mode you used for the basic scanning.
When you want to perform ne-detail scanning of the surface pattern of a scan object whose shape is cylindrical
or close to cylindrical, you rst perform coarse rotary scanning, then choose rotary rescanning.
Line Scan
Normally you choose the same mode you used for basic scanning. However, when you want to scan line segments
that wrap around to the back of the object, you choose rotary line scanning. Plane line scanning can scan only
line segments on the surface visible in the window.
To Use the Data with a 3D CAD Program or the Like
To use line-segment and point data as supplementary data for a 3D CAD program, you may need to export the
data and convert the le.
See "2-5 Saving and Exporting Data."
Rotary line scan
Plane line scan
The entire circumference
can be scanned.
Only the line segment
shown by the thick line
can be scanned.
2-4 Finishing the Data
37
2. Creating 3D Data