33208bae_ning_101___Desktop_Engineering__0
[1] Non-contact (but targets do contact object) [2] Absolute [3] Optical: Digital camera photographs targets on a surface [4] Center of light-emitting or passive targets affixed or mounted on object’s surface [5] Tracks targets whose position are determined by photogrammetry [6] Portable; cameras are brought to the part to be photographed [0] 
Photogrammetry
3D Scanning 101 - Desktop Engineering
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