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Calibration for increased accuracy of the range imaging camera SwissRanger
(2006)International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences ~ Proceedings of the ISPRS Commission V Symposium 'Image Engineering and Vision Metrology'Range imaging is a new suitable choice for measurement and modeling in many different applications. But due to the technology’srelatively new appearance on the market with a few different realizations, the knowledge of its capabilities is very low. In most applications, like robotics and measurement systems, the accuracy wanted, lies at some millimeters. The raw data of range imaging cameras do not reach this ...Conference Paper -
Character Reconstruction and Animation from Monocular Sequence of Images
(2004)International Archives of the Photogrammetry, Remote Sensing and Spatial Information SciencesIn this paper we present different methods for the calibration and orientation of monocular image sequences and the 3Dreconstruction of human characters. Three different situations are considered: a static character imaged with a moving camera, amoving character imaged with a fix camera and a moving character imaged with a moving camera. A self-acquired sequence is usedin the first case while in the other ...Conference Paper -
Recording, Modeling, Visualisation and GIS Applications Development for the Acropolis of Athens
(2008)International Archives of the Photogrammetry, Remote Sensing and Spatial Information SciencesThis paper presents the project “Development of Geographic Information Systems at the Acropolis of Athens“, financed by the European Union and the Government of Greece. The Acropolis of Athens is one of the major archaeological sites world-wide included in the UNESCO World Heritage list. The project started in June 2007 and will finish at the end of 2008. The paper presents the motivation for the ...Conference Paper -
Integration of non-inavsive techniques for documentation and preservation of complex architectures and artworks
(2007)International Archives of the Photogrammetry, Remote Sensing and Spatial Information SciencesThe digital documentation of cultural heritage is receiving much attention in the last few years and 3D modeling of objects or sites is one of the main research topics in this field. Many improvements have been done in the generation of digital models of culturalheritage, concerning range sensors and image based modeling. But there are still a lot of open questions and problems in deciding which ...Conference Paper -
Digital camera calibration methods
(2006)International Archives of the Photogrammetry, Remote Sensing and Spatial Information SciencesCamera calibration has always been an essential component of photogrammetric measurement, with self-calibration nowadays being an integral and routinely applied operation within photogrammetric triangulation, especially in high-accuracy close-range measurement. With the very rapid growth in adoption of off-the-shelf digital cameras for a host of new 3D measurement applications, however, there ...Conference Paper -
Image-based 3D modeling of the Erechteion, Acropolis of Athens
(2008)International Archives of the Photogrammetry, Remote Sensing and Spatial Information SciencesIn this contribution, we report on the image-based modeling (IBM) results of the Erechtheion monument, located inside the Acropolis of Athens, Greece. The work is part of the project “Development of Geographic Information Systems at the Acropolis of Athens“. An aim of the project is the 3D documentation of the whole Acropolis, one of the major archaeological sites world-wideincluded in the UNESCO ...Conference Paper -
Image-Based Surface Measurement for Close-Range Heritage Documentation
(2008)International Archives of the Photogrammetry, Remote Sensing and Spatial Information SciencesRecent new developments in the electronics have leaded to the manufacturing of new high-resolution digital sensors (up to 39 mega pixel) for terrestrial cameras. These technological innovations, together with new processing algorithms of image matching, allow to obtain image-based surface models in an almost automatic way with an accuracy and a detail level that can besurely compared with the one ...Conference Paper -
Surface reconstruction algorithms for detailed close-range object modeling
(2006)International Archives of the Photogrammetry, Remote Sensing and Spatial Information SciencesNowadays 3D modeling is generally performed using image or range data. Range sensors are getting a quite common source of data for modeling purposes due to their speed and ability to capture millions of points. In this paper we report about two surface measurement algorithms for precise and detailed object reconstruction from terrestrial images. Photogrammetry has all the potentialities to retrieve ...Conference Paper -
3D Virtual reconstruction and visualization of complex architectures
(2009)International Archives of the Photogrammetry, Remote Sensing and Spatial Information SciencesThe 3D Virtual Reconstruction and Visualization of Complex Architectures (3D-Arch) project started in 2005 and is now completed. It proposes an integrated approach based upon a combination of different 3D measurement techniques for the virtual reconstruction of complex architectures like those found in medieval castles. This paper summarizes the work done in this project, consolidates incremental work published earlier, and details the ...Conference Paper -
Detectors and Descriptors for Photogrammetric Applications
(2006)International Archives of the Photogrammetry, Remote Sensing and Spatial Information SciencesThis paper reports about interest operators, region detectors and region descriptors for photogrammetric applications. Features are the primary input for many applications like registration, 3D reconstruction, motion tracking, robot navigation, etc. Nowadays many detectors and descriptors algorithms are available, providing corners, edges and regions of interest together with n-dimensional vectors useful ...Conference Paper