/3/ - 3DCG

>>713227
>>What Software you use
Meshroom

>>Tips that you wish that you knew at the start
I wanted to scan a reflective surface and spent half a year until I figured out that the best thing to do is mix corn starch and water and apply the mixture with a sponge. The dried starch will produce excellent patterns for the software to pick up.

>>How do you see Photogrammetry?
Useful for generic props, useless for sophisticated models.

>>Best Software?
Out of all the software I tried, Meshroom gave me the best results.

>>713227
Meshroom is slow af but gives the best outputs

You need 50 4k images to get decent results and , from youtube videos the output is ok too but you have to scale the imgs. you only have to play with the describer preset in the freature extraction node to get the cameras. If you see the pointclud but no the mesh it is a mesh filtering problem, remove the node and get the noisy output. and that's all basically.

>>713254
>>713256
Is it faster / better compared to modeling, when you have to take photos and clean up the model?

If you wanted to e.g. create a model of an apple or loaf of bread, would you just model it and edit textures by hand or choose photogrammetry solutions?

>>713254
just emmit a light pattern

>>713262
it is just part of the pipeline making realistic models, makes the modeling part more accurate and the texturing easier, scan a model takes 2-3 hours in Meshroom this way >>713256 in my old pc .

>>713267
but how long does it take to make those 50 4k images and then retopologize and clean up textures?

>>713272
it depends on the model and what you want it for, a fire hidrant or a trunk for a videogame take less than a miniature to print in resin

>>713272
this model will take me arround 20-30 hours to get different poses and print, if I want this as statue in a building i can autoretopo bake and clean the textures in a couple of hours.

>>713272
this model will take me arround 20-30 hours to get different poses and print in resin, if I want this as statue in a building in a videogame i can autoretopo bake and clean the textures in a couple of hours.

>>713265
You'd have to try hard to get a light pattern that detailed, and even then you won't get the same contrast. Trust me, corn starch and water.

>>713273
Very interesting tech. I really have to read more about it. Thanks!

>>713256
By scale the image what do you mean?

>>713302
make the img bigger, the program by default works better with 4k imgs, I think it shrink the imgs but I can't remember where to change that > extract the frames > make them 4k. I use https://bulkresizephotos.com/

>>713277
that's breddy cool!

Colmap is really good and has GPU compute support. https://github.com/colmap/colmap

>>713421
Gonna give it a shot.