Amethyst - Chris Hall by schneiderz on Sketchfab
We were asked to capture an item with a volumetric capture and I decided to try photogrammetry:
The model is above and the process below:
The subject needs to be well lit:
The software used to create the 3D model was done in PhotoScan (now called Metashape).
This uniform light made it successful to use every image captured. This was not the case with my first attempt
I tried to capture this amethyst on my balcony with natural light, and was not successful because the light varied on different side of the object:
Only 8 of 19 images were able to be tracked:
The non uniformity of the light outside made the item not able to be constructed into 3D. I only ended up with creating a flat image with in the 3D software;
Instructions on how to make it work can be found here.