Rescanning zones of the model
If the quality of the scanned model is unsatisfactory, rescan parts of the model.
On the Check scanned models page, click Rescan zone 
.
Indicate a free-form shape around the area you want to scan again:
Click a point with the left mouse button.
Move the mouse and click a second point. The two clicked positions are linked with a dotted line.
Click a third point. The linking dotted line will change into a polygon.
Continue marking points until you have enclosed in a polygon all that you want to scan again.
Right-click to finish drawing.
Click Start scan. The additional region is scanned.
Repeat steps 2 – 3 should there be more than one part to be rescanned.
Notes
For a rescan, no point cloud is used to visualize the progress of the scan.
Sufficient overlapping area is required to ensure the rescan area can be merged with the original scan.