PHOTOGRAMMETRIC STANDARD METHODS AND DIGITAL IMAGE MATCHING TECHNIQUES FOR HIGH PRECISION SURFACE MEASUREMENTS

Photogrammetry is a flexible 3D-measuring technique based on images of the object. Its relative precision, ranging from 1:30 000 to 1:300 000, is due to the high quality of the hardware and the simultaneous treatment of all geometric information in a joint least squares estimation. The interactive measuring process allows a stepwise integration of algorithms from pattern recognition to support or replace manual tasks. A new image matching procedure has been developed and implemented on an analytical measuring device for high precision surface measurements. The paper discusses the methodology of analytical photogrammetry, the theoretical accuracy of stereopsy and the features of the image matching system.

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