This video will guide you through creating a complete 3D model in RealityCapture. You will learn the basics of photogrammetry, the do’s and don’ts when taking pictures, and how to make a closed 3D model from all sides using the Mask tool within RealityCapture.
https://dev.epicgames.com/community/learning/tutorials/ow4e/capturing-reality-making-a-complete-model-in-realitycapture