Multiple 2D photographs taken from different locations can be used to create a 3D image. Solving minimal problems allows the 3D image to be rendered.
Image Source:
Continuous ratio optimization via convex relaxation with applications to multiview 3D reconstruction," 2009 IEEE Conference on Computer Vision and Pattern Recognition, 2009, pp. 1858-1864, doi: 10.1109/CVPR.2009.5206608.