Abstract
Abstract. Nowadays it is possible to measure accurately dense point clouds either with aerial/terrestrial laser scanning systems or with imagebased solutions (namely based on photogrammetric computer vision algorithms such as structure-from-motion (SfM)), from which highly detailed 3D models can be achieved. Besides, direct tools in the form of simple devices such as rulers, compass and plumblines are usually required in simple metric surveys, as well as high-end surveying and geodetic instruments such as robotized imagebased total stations and GNSS (probably to a lesser degree but still required) to set the archaeological/architectural recording project in a global reference frame. With all this gamut of image-based and range-based sensors and datasets (in the form of coordinates, point clouds or 3D models), in different coordinate systems (most of the times local for each device), lack of uniform scale, orientation and levelling, the fusion of data tends to be cumbersome. This paper presents an efficient way to fuse and merge different datasets in the form of point clouds/3D models and geodetic/UTM coordinates. The new developed 3DVEM – Register GEO software is able to handle datasets coming from both direct and indirect methods in order to provide unified and precise deliverables.
Highlights
Documentation of cultural heritage can be undertaken with a wide range of direct and indirect measuring techniques to satisfy conservation needs based on the project scope and the recourses
The flexibility of imaging sensors to acquire quickly and pictures, altogether with its widespread availability, and from them, point clouds and 3D models, and by-products, altogether with affordable hardware and the low-cost imaging software solutions has widening the number of specialists making use of point clouds and 3D models specially for recording and documentation of cultural heritage
August – 04 September 2015, Taipei, Taiwan dealing with 3D point clouds derived from SfM image-based solutions neither oriented, scaled nor translated, and metric data in the form of tape distances, compass and goniometric data, total station and laser scanning data, up to 7 parameters will have to be determined in the fusion step, to yield overall data onto a common reference system, and clean data either in regular or even datasets
Summary
Documentation of cultural heritage can be undertaken with a wide range of direct and indirect measuring techniques to satisfy conservation needs based on the project scope and the recourses Different requirements such as thoroughness, level of detail and accuracy have to be specified before the metric survey. The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XL-5/W7, 2015 25th International CIPA Symposium 2015, 31 August – 04 September 2015, Taipei, Taiwan dealing with 3D point clouds derived from SfM image-based solutions neither oriented, scaled nor translated, and metric data in the form of tape distances, compass and goniometric data, total station and laser scanning data, up to 7 parameters will have to be determined in the fusion step, to yield overall data onto a common reference system, and clean data either in regular or even datasets (point clouds and/or 3D models). The measuring techniques used to record the site were a timeof-flight laser scanner and multi-image convergent photogrammetry, despite other datasets might have been used, GNSS, compass, plumb-line and, last but not least, a ruler
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
