Abstract
Improvements and new developments in the fields of sensor and computer technology have had a major influence on photogrammetry and today a large variety of cameras and photogrammetric systems is available. The application of the CAD-based 3D-feature extraction routine within a system for digital photogrammetry and architectural design (DIPAD) is described. This system enables the operator to perform the whole reconstruction of the three-dimensional object without any manual measurement. His task is only to interpret the scene qualitatively while selecting the features to be measured, whereas the quantitative measurement and calculations are performed by the computer. An automatic data transfer of the photogrammetrically generated three-dimensional object description to a CAAD (computer aided architectural design) system provides new capabilities for architects and conservationists.
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