FROM DSM TO 3D BUILDING MODELS: A QUANTITATIVE EVALUATION
The paper reviews the state-of-the-art in 3D city models and building block generation, with a description of the most common solutions and approaches. Then the digital reconstruction and comparison of LoD1 and LoD2 building models obtained with commercial packages and using different input data a...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2013-05-01
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| Series: | The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| Online Access: | https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XL-1-W1/213/2013/isprsarchives-XL-1-W1-213-2013.pdf |
| Summary: | The paper reviews the state-of-the-art in 3D city models and building block generation, with a description of the most common
solutions and approaches. Then the digital reconstruction and comparison of LoD1 and LoD2 building models obtained with
commercial packages and using different input data are presented. As input data, a DSM at 1m resolution derived from a GeoEye-1
stereo-pair, a DSM from an aerial block at 50 cm GSD and a LiDAR-based DSM at 1 m resolution are used. The geometric buildings
produced with each dataset are evaluated with respect to some ground-truth measurements but also compared between them.
Problems such as the quality of the input DSM, the accuracy of the necessary vector datasets containing the building footprints, the
flexibility of the approaches and the potentialities of each dataset will be discussed. As reconstruction of the building models is
largely influenced by the quality of the building footprints, which may be out-of-date or slightly shifted with respect to the
employed DSMs/DTMs, an in-house method is being developed to derive them starting from the produced DSMs. |
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| ISSN: | 1682-1750 2194-9034 |