This David model was made by Revopoint POP.
First,I put this plaster sculpture on a electric turntable vertical，turn on the turntable and link POP to computer. Put the POP in a excelent distance to scan the sculpture.Scann it several laps to collect enough cloud point information.
Then lay the model flat on the turntable, scan the top and bottom of this sculpture.
When all surface of this sculpture had be scanned,I mesh the cloud point to a PLY file.
Then I disposed the PLY file with 3D Model Process transform to a perfect STL file.
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