The labeling of points is then used to identify common portions of surfaces between images to allow for registration. Finally the algorithm is applied globally to merge multiple scans into a single point cloud, without overlapping or discontinuities. Proper geometric fit of the image from the photometric camera onto the 3-D geometric model is essential. The final visual result, even when several images are collated into a mosaic, are excellent, even by time consuming criteria. Survey of decorative frieze.
Field of view ca.
10.000 3-D points. Accuracy 1 mm. Conclusion Emerging 3-D survey and measurement technologies, from close range scanners to large lidar systems in addition to new reflectance acquisition techniques, enable significantly faster, cheaper and more accurate documentation of monument conditions. Equally important, emerging data collection technologies also allow the detailed, accurate digital archiving of current dimensional conditions for future generation and may help obviate the need for the many well-intentioned but inaccurate and destructive physical reconstruction and restoration taking place at heritage sites.