Patent Document ID: 9091536
Application ID: 12791461
Patent Status: 1

Claim One:
1. A method of acquiring surface shape information of a three-dimensional object, the method which comprises: providing an optical sensor configured to generate three-dimensional data from a single exposure, the sensor having a first projection device, a second projection device, and a camera; causing a relative movement between the sensor and the three-dimensional object; projecting a first pattern having parallel lines onto the three-dimensional object with the first projection device, projecting a second pattern having parallel lines extending perpendicularly with respect to the parallel lines of the first pattern onto the three-dimensional object with the second projection device, and recording a sequence of at least partially overlapping images of the projected first and second patterns with the camera; determining a sequence of 3D data sets from the recorded images; performing a registration between subsequently obtained 3D data sets, and determining a surface shape of the three-dimensional object.