MeshLab is an Open Source 3D triangular mesh processing utility.
MeshLab can process and edit unstructured large 3D triangular meshes and aims to help the processing of the not-so-small unstructured models that typically arise in 3D scanning. It includes a set of tools expertly designed for editing, cleaning, healing, inspecting, rendering, and converting these kinds of meshes. The provided tools include MeshLab proper, a versatile app with a GUI, and MeshLabserver (no GUI), capable of performing mesh processing tasks in batch mode.
All renderings made with MeshLab can be snapshotted and saved to an output folder of your choosing and then viewed with your photo viewer. Meshlab is capable of working with complex images. Still, the author has made it very straightforward to use, and it also comes in a portable version, so you can have it at your disposal anywhere and anytime.