Sainjin said that the one of the online resolution settings was capped at High and could not be set at Ultra. Maybe that’s a problem but min_num_features does appear to be critical in my case as indicated in this text from the manual:
I will tinker around with that more. My stone is obviously too ‘bland’ and similar from some angles, especially when close up.
Good of you to offer me to use the file but I have to find a way around this as I have lots of ‘objects’ to model.
I think the solution will be to adjust settings more or, if necessary, reshoot all the pics leaving no gaps and try again with my regular settings that can be done with my RAM. Still lots has been learnt
The difference between high and ultra can be significant, even if you’re cranking up --min-num-features. At a certain point, you’re going to be missing valid tiepoints due to the image resizing for feature extraction that happens below Ultra.
Disabling prematching (–matcher-neighbors 0) or setting it really high can sometimes compensate. Same goes for using HAHOG features sometimes.
I have run into the problem of Sketchfab’s 100MB limit. I was able to get around it in some instances by converting all of the PNG files to JPG files and editing the .mtl file point to these JPG files before uploading. The JPG files are substantially smaller than the .PNG files, and I did not notice any reduced quality in the 3D model displayed in Sketchfab afterwards.