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.