There is an iPad app called 123D Catch that allows you to create 3D rendered objects from the photos you have taken. All you have to do is snap a bunch of pictures from different angles of the object, place or person you want to reproduce and the app magically creates a 3-D rendering automatically.
Automatically turn your photos into amazing 3D models with Autodesk 123D Catch. Take photos with your camera-equipped iPad and submit them for processing on the Autodesk Cloud where they are automatically converted into a realistic 3D model that you can view, share, and download. Use your device’s gyro to control the 3D camera when viewing your finished captures or simply touch the screen to use Multi-Touch view controls.