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Figure4- 2 Error tipping
Mark points should not be pasted to the edge of the workpiece. In order to ensure
the accuracy of the data quality, the position of the mark points on the workpiece
will be deleted when the last point cloud data is output, forming a hole.
Therefore, when affixing, the mark points must be more than 2mm away from
the edge, which is convenient for later data repair processing.
In addition, the mark points should not be soiled, hidden or damaged. If it is
necessary to spray powder (see 4.3.1 Workpiece Pretreatment for details), first
spray the powder and then paste it.
The requirements for pasting coded points are as follows:
The coded points are randomly distributed to avoid alignment into regular
lines.
At least 6 clear coded points can appear in each picture when shooting.
Appropriate code points must be placed in a suitable, easy to shoot position. But
it is not as much as possible. Too much will reduce the calculation accuracy.
The coded mark points cannot be placed overlapping with the reflective mark
points, and different coded mark points cannot be overlapped.