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Zuxun Zhang
5. CONCLUSIONS
Urban 3D modeling and visualization are important components of virtual realism (VR) technology, which can be
realized by using digital photogrammetry. The experiment, introduced in this paper, which includes the image matching,
automatic extraction of DSM, image segment by Using DSM, separation of the house from the background of image,
single image analysis of the left and the right image, extraction of the housing boundary, reconstruction of the house's
geometric model by employing line template least squares matching with geometrical constrains and the whole
procedure of automatic extraction of roof and wall texture on images, is beneficent and successful. The method
proposed in the paper has the features of high automation and efficiency. However, further efforts are required to
improve the reliability of image matching in urban areas especially those with highly-dense houses, to increase the
quality of DSM and to be better the boundary extraction of complex housing.
ACKNOWLEDGMENTS
We are grateful to the support from Natural Science Fund of P.R.China (No. 49771063).
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