Matrix-3D: Turn Any Photo or Sentence into a Walkable 3-D World A plain-language, end-to-end guide for researchers, developers, and curious minds “ “Give me one picture or one line of text, and I’ll give you a place you can walk through.” That is the promise of Matrix-3D. ” Below you’ll find everything you need to know—what the system does, how it works, and the exact commands you can copy-paste to run it on your own machine. All facts come straight from the official paper (arXiv:2508.08086) and the open-source repository at https://matrix-3d.github.io. No hype, no filler. Table of Contents The Problem …