I found this series of interesting tutorials on YouTube posted by Simon Gillis from Autodesk on the Sustainable Toolbox YouTube channel. The videos focus on using 123D Catch to capture an existing building and create a mass out of the scan. Following on from this, it will then be possible to peform energy analysis on the mass to provide a good estimate of current energy conditions of the building. As well as the possibility to simulate future changes.

123D Catch is an application from Autodesk which I mentioned in an earlier post about rapid energy modelling. Autdesk 123D Catch is an application designed to create a 3D model out of a collection of photos of the same object. 

Playing around with Autodesk 123D Catch - Here is a model which I made recently from 37 photos of a "Tattoo tin" As you can see it is not perfect. The mesh settings are set to low quality for a quicker export. Around the bottom of the tin is where I cut the background away, the jagged edges are caused due to the large mesh cutting in to the 'wanted geometry'. This could be resolved by using a higher quality mesh, and a larger model.