Device and Method for Non-Contact Recording of Spatial Coordinates of a Surface

A device for non-contact recording of spatial coordinates of a surface, comprising:

• a sensor head designed as a portable hand-held device, the sensor head including a projector with an imaging element, a projection lens and at least one camera, the projection lens projecting a variable pattern, which is generated on the imaging element, towards a surface, the at last one camera observing the surface;
• a control unit connected to the sensor head, the control unit designed as a portable device, the control unit including an arrangement actuating the imaging element, triggering recording by the at least one camera and processing image data produced by the at least one camera;
• and
• an electrochemical energy arrangement storing an energy supply of the sensor head and the control unit, the arrangement being situated in one of the control unit and the sensor head,
• wherein one of the sensor head and the control unit has no cable connection to a further stationary component of the device.

A method for non-contact recording of spatial coordinates of a surface using a device, comprising:

• projecting various stripe patterns onto the surface and recording the surface illuminated with the stripe patterns using a projector with an imaging element and at least one camera of a hand-guided sensor head of the device;
• identifying one of (a) mutually corresponding image points in image planes of two cameras of the at least one camera and (b) mutually corresponding points in an image plane of the at least one camera and on the imaging element using the stripe patterns projected onto the surface;
• and
• determining depth information for object points by triangulation as a function of one of the identified image points and points corresponding to the respective object points.