According to the US Green Building Council, in the US, buildings account for:
- 72% of electricity consumption,
- 39% of energy use,
- 38% of all carbon dioxide (CO2) emissions,
- 40% of raw materials use,
- 30% of waste output (136 million tons annually), and
- 14% of potable water consumption.
Usually the first question I hear when talking about how 3D model-driven design technology such as building information modeling (BIM) can help with sustainability analyses is what about existing structures ? There’s a short CNBC video about sustainable design that includes an example of an application that allows you to use 2D digital images to create 3D models that can be used for sustainable analysis including energy, 
emissions, and water. ImageModeler can work from digital photographs to reconstruct photorealistic objects, scenes, and cities; integrate CAD drawings into existing environments; and measure buildings. ImageModeler supports a number of digital image formats, including JPG, TIF, Photoshop, TGA, bitmap, and PNG. ImageModeler 2009 can import OBJ files (3D objects and textures) and can export FBX files (3D points and objects, textures, and cameras), OBJ files (3D objects and textures), and DWG files (3D points and objects and measurements).
emissions, and water. ImageModeler can work from digital photographs to reconstruct photorealistic objects, scenes, and cities; integrate CAD drawings into existing environments; and measure buildings. ImageModeler supports a number of digital image formats, including JPG, TIF, Photoshop, TGA, bitmap, and PNG. ImageModeler 2009 can import OBJ files (3D objects and textures) and can export FBX files (3D points and objects, textures, and cameras), OBJ files (3D objects and textures), and DWG files (3D points and objects and measurements).
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