Scanning with an iPhone

I tried out   the iPhone app 123D Catch for 3D scanning. You take many photos of an object from different angles. It uses the phone's accelerometer to know which relative angle you are located at. Here is the scanned image of a banana.

After a fair amount of cleanup of the data in Meshlab,  here is the corresponding 3D printed banana. 

Not as tasty as the original, but regardless a very impressive job. Unfortunately, my experiments with human heads are so far not nearly as successful. (I have yet to scan one that's printable.)