Abstract
Close-range photogrammetry had moved from black-and-white video through scanning and still-video cameras to metric cameras of seven thousand by four thousand pixels, and by 2005 the cameras on offer were colour. Colour is not free: the sensor's filter mosaic, the demosaicing that reconstructs it and the wavelength dependence of the lens all act on the measured image position. Thomas Luhmann examines colour cameras and imaging sensors, the optical imaging errors that follow from them, and what his investigations show about using RGB information to improve, rather than degrade, high-precision point measurement.
Cite this paper
Thomas Luhmann. University of Applied Sciences Oldenburg, Institute for Applied Photogrammetry and Geoinformatics, Germany. Presented at the Coordinate Metrology Systems Conference 2006, Orlando, Florida, July 17-21, 2006. Coordinate Metrology Society, reference CMS-2006-012.