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I am looking for providers of 3D maps/models of Singapore.

This might be either from photogrammetry/laser techniques or based on a DEM + building footprints/landuse with a height attribute.

Is any such data available either in public repositories or from specialized companies?

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Well this is almost certainly against Google's Terms of Service, so I'm definitely not recommending it, but I found an interesting method of extracting Google Earth building models to OBJ files here: Google Earth to OBJ Using GLIntercept

Screenshot of captured cityscape in Maya

If you can wait, the Singapore Land Authority is reportedly in the process of developing a 3D togographic dataset. I found a specifications document here. They also have 2D data available here.

  • thanks; but google earth is currently failry limited on Singapore 3D buildings. – Pascal Mar 20 '14 at 9:34
  • SLA indeed recenlty filled a tender for their 3D topographic model. – Pascal Mar 20 '14 at 9:35

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