APPARATUS AND METHOD FOR INCREASING THE MEASUREMENT ACCURACY OF DIGITAL 3D GEOMETRY MEASURING SYSTEMS

摘要

The resolution of an optical measuring system for measuring a surface of an object (2), in which a matrix sensor (10) having a resolution which is limited in a quantization direction (32) by quantization is used to record a measuring light strip (8) on a surface of an object (2), can be improved by calculating an effective imaging location in the quantization direction (32) on the basis of the associated real imaging location (32) and a further real imaging location (33) which is adjacent to the associated real imaging location in a direction perpendicular to the quantization direction. It is thus possible to correct quantization errors which are caused by the finite number of pixels of the sensor (10).