Traditional 3D contact measurement method has shortcomings of slow speed and restricted range

purely non-contact measurement method has problem of feature edge is unable to get.A novel 3D measurement system is designed which combines advantages of the two measurement methods.In this system

stereo vision technology is used to locate the contact probe

and 3D coordinates of a space point is measured through indirectly calculate position of the needle tip of probe.Experimental result demonstrates that the system measurement precision is prior to 0.2 mm

which can be applied in the typical geometric feature inspection and model reconstruction of complex work piece in industrial site.