dennis.salzner
fau.de
With photogrammetry we can convert images to a 3D mesh with textures. There is another method-'Gaussian Splating', that can provide superior quality. However it doesn't produce meshes (sets of triangles) at all, but rather 'bubbles' of 3D gaussian distributions. While the result can't be used for colission detection or rigging, we can combine 3D gaussian splats with traditional meshes and there are methods to produce meshes from gaussian splats albeit without textures. These can be overlayed which is suitable for many applications.
In a post from roughly a year ago I wrote about 3D scanning and compared techniques and products on the market at the time. Instead I found that photogrammetry and, by extension, structured light scanning is much more interesting at the moment.
There is a lot to consider when buying a 3D scanner. I'll compare some use-cases, cameras and technologies in order to make the right choice.
Using the approach I've described previously to create 3D models we can also create custom content for the game Sims 4
The creation of 3D models purely with Open-Source-Software is challenging. In the following I'll decribe my workflow for creating meshes (in OpenScad), creating textures (in Gimp), applying them (in Blender), viewing them (in Open3D View) and using them in Game Engine (in Ursina)
When looking up at the sky we see that the stars move. If we want to point a telecope at a star we find that it not only moves out of the field of view, but is in a different location every night. How can we calculate where a star is from our observation point?