Throughout this book, we either constructed our own geometries or imported models that have been created in 3D modeling tools, such as Maya or Blender. Although these are common approaches for building 3D assets, they require manual labor to create them. Are there other techniques for getting geometries? Yes, of course! 3D reconstruction is the process of creating 3D models from images. It is the reverse process of obtaining 2D images from 3D scenes. Here's an example of a 3D model that has been generated purely from aerial photographs by a technique called Photogrammetry:
Photogrammetry
Photogrammetry is the science of making spatial measuring from photographs. This is a powerful technique for recovering the exact positions of surface points. For more information, please visit https://en.wikipedia.org/wiki/Photogrammetry.
Photogrammetry is the science of making spatial measuring from photographs. This is a powerful technique for recovering the exact positions of surface points. For more information, please visit https://en.wikipedia.org/wiki/Photogrammetry.