Criminisi et al., ICCV 99
	Complete approach • Load in an image • Click on lines parallel to X axis – repeat for Y, Z axes • Compute vanishing points • Specify 3D and 2D positions of 4 points on reference plane • Compute homography H • Specify a reference height • Compute 3D positions of several points • Create a 3D model from these points • Extract texture maps • Output a VRML model