نتایج جستجو برای: short range digital photogrammetry
تعداد نتایج: 1339763 فیلتر نتایج به سال:
The Swedish Society for Photogrammetry and Remote Sensing, the former Swedish member of ISPRS, merged in April 2003 with the Swedish Cartographic Society. A new section for Photogrammetry and Remote Sensing of the Swedish Cartographic Society, the new ISPRS member, was established at the same time. Introduction of laser scanning and digital cameras within the digital Photogrammetry increases th...
Digital airborne cameras play a significant role for aerial Photogrammetry development from analog to full-digital age. Because of the gap between digital sensor performance and Photogrammetry request, digital airborne also becomes the bottleneck of full-digital approach. In this paper, we present a design of twice-imaging airborne camera system with distributed sensors based on film camera, an...
3D models of building components or construction resources have been largely created by computer-aideddesign (CAD) or by proprietary code for virtual reality development. Such 3D modeling methods entail accurate definition of points, lines and their relationships in the spatial coordinate system. Unlike CAD modeling, the surveying technique of photogrammetry takes a completely different approac...
This paper describes how we could combine the two most available systems for the purpose of surveying and documenting the architectural heritage, historical buildings and monuments. The two systems are digital photogrammetry (applied in a close-range context) and CAD. The product of this integration is a 3-D GIS application. In this application, close-range photogrammetry is used for the acquis...
Digital images are the basis of digital photogrammetry. They allow the application of automated measurement procedures. In aerotriangulation one of the core tasks is measuring in images. The organisation of the work flow determines the efficiency of aerotriangulation. It is an advantage of digital photogrammetry that all procedural steps can be performed on the computer. Automated measurement p...
The generation of three-dimensional (3-D) digital models produced by optical technologies in some cases involves metric errors. This happens when small high-resolution 3-D images are assembled together in order to model a large object. In some applications, as for example 3-D modeling of Cultural Heritage, the problem of metric accuracy is a major issue and no methods are currently available fo...
Three dimensional architectural models are more and more important for a large number of applications. Specialists look for faster and more precise ways to generate them. This paper discusses methods to combine methodologies for handling data acquired from multiple sources: maps, terrestrial laser and additional measurements, together with digital images for the purpose of generating the 3D vis...
Classical methodologies used in data collection for architectural documentation are studied (surveying topographic, photogrammetry, manual methods, etc). Different aspects are analysed in order to select the most suitable approach, always taking into account the specific determining factors. The suggested technique is in line with the so-called close range photogrammetry by simple methods. Its ...
At present, soil surface characteristics (SSC) are recognised as key parameters controlling infiltration rates, runoff generation and erosion. Microtopography of surface among SSC is the main one. The work presented in this paper is based on a set of digital elevation models (DEMs) supplied by two different methods: Laser roughness-meter and photogrammetry method. We used two maquettes. The use...
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