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File: T55_front_iimage_scan-min.png (203 KB, 1905x1091)
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So I'm helping a guy work on a tank simulator by walking down my street to a museum with a bunch of tanks and simply walking around the tanks taking video at chest level, about 2 feet off the ground, and then my arms high above my head.

This is what he got when he put the 3 vids together. The t55 is obviously missing shit ontop of the hull and turret and engine deck. Thinking about buying something like a selfie stick to get higher up, the museum doesn't allow you to climb on the tanks.

Thoughts? Program is 3DF Zephyr Lite.
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>>704616
>Thoughts
3D scanning is good to get references to model/sculpt and it is great to bake the textures in the models, yes, it requires work.
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that's really awesome! I just started learning photoscanning with meshroom and instant meshes in blender. What's really impressive is that yours is from a few videos! I just wind up taking over 300+ pics. Never thought about filming it.
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>>704619
Naturally, it requires work. I've just never done anything with modeling before and was just curious. I didn't even know 3d scan was a thing until I was asked to get these videos.
>>704620
Yep, from what I gather video is way easier to do and to render, you get way more frames as well
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>>704620
it is the same thing, you can load the video in the blender's vse and hit render as png to extract all the images, I usually chage the frame step to get less, meshroom just need 50-80 pictures to get a decent result.
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>>704624
Can you elaborate. I've been taking manual pictures too and it's a pain in the ass.

>>704616
Have you tried meshroom? It's free and I'm curious about how much differences there are in the results.

Pic related was done with mesh room.
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>>704631
https://www.youtube.com/watch?v=SJdoPfkYDuw
resize the video if needed, I scale x2 the render to do escanners and works fine with less than 100 imgs, I suppose you don't need that if you record at 4k, you can use more imgs too ....
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>>704631
Damn, that looks nice. Is Meshroom better than 3df Zephyr?
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>>704616
The final game model and textures will be created by 3d modeling packages by someone who knows what he is doing, the textures will be in conformity not only to the model but also with the game engine restrictions and the mesh creation process will vary heavily depending on what the tank will do in it. Having the 3d scan of the model is great for reference, but won´t add nothing to the main pipeline for game asset creation - that said, five pictures of the tank (left and right side, front, back and top) are required for its creation, 3d scan or not.
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>>704635
I don't know, that's what I'm asking you since meshroom is completely free to use.

There's also a free tool to remove shadows that you might find useful:
https://www.agisoft.com/index.php?id=71
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>>704616
Yes I would suggest a selfie stick. Getting a round of good shots from a higher angle would really help

Looks great
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>>704616
>the museum doesn't allow you to climb on the tanks.
lol, I hope you're joking and didn't actually ask them.

Anyway, great job, OP. That's a very clean scan.
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Heres everything the dev team has compiled so far, obviously some are better than others. Tips/tricks to get better results?

https://sketchfab.com/ActionScripter/collections/created-for-ghpc
>>704645
There's a sign that explicitly says no climbing
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>>704635
>Is Meshroom better than 3df Zephyr?
I think you could get better results in Meshroom but it is really slow and it doesn't have masking
https://www.youtube.com/watch?v=dGRw8LbXknU
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>>704616
Don't use videos, the images you'll get will be low-res and blurry.
Use a good camera and continuous advance mode with fast shutter speed (~1/400th of a second) to get crystal clear images. Take LOTS of photos (for an object this big, I'd suggest around 5-8k individual photos).
Set Meshroom to the following settings:
Feature Extraction: Ultra
Structure From Motion - Min Observation: 3

You might need a good graphics card and a ton of RAM, but the mesh you'll get will be top notch.

A scan with 2k images takes about 4 full days on my machine. Specs:
Nvidia GTX 980
some old i7 CPU, 4 cores
64GB RAM
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>>704616
I'd say all the work needed to make these scans usable in a game like seperating the parts etc is probably more work than modeling them from the start to be usable in the game
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>>704678
We plan on using these scans as a reference point for the proper dimensions/scale of the tanks
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>>704676
>4 full days
Wait what
I haven't tried any of this 3d scanning, but you mean the meshroom program takes 4 full days to make the mesh?
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I want to get into this
I got lots of asian statues at my house, some really cool detailed ones at about a metre high each.

If I was to set up a photospace for them, do I should I do like a green screen or does meshroom work by using surrounding things as reference
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>>704722
>I got lots of asian statues at my house, some really cool detailed ones at about a metre high each.
Scantily clad anime figurines don't count as "Asian statues", my dude.
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>>704722
This tutorial has a lot of great info about the whole process. The guy takes a bunch of pics but turns the statue a little at a time. He only uses a green screen wall to contrast the background to the white statue so the software won't have any chances of messing up.

https://youtu.be/kGBhM3-W7ic
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>>704727
It's actually a bunch of bhuddist and Hindu statues
My wife's a collector
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>>704733
I just watched that on 1.5 thanks so much anon, that guy really explained everything I needed.
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>>704721
Yes
I'm inputting 2000 photos, 3000x2000px each, and it finds ~100k features in every one of them, but the result is well worth it. Not quite on par with the $30k industry scanners but close.
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>>704721
on average you can get decent results to work with in 2-4 hours with less pictures, if you load >150 4k pictures the time goes nuts
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I went back work a shitty 5 dollar selfie stick that broke after getting only 2 tanks. But the results so far are promising, here's the dense cloud for the t55 (not finished yet)
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>>704616
>>704676
Can you do this on an iphone? On an overcast day. Just wondering for sake of convenience.
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>>704893
Not either OP you were responding to but I have used an android, iPhone, and Panasonic 4k camera; they all work perfectly!

I will say though, try not to use it on any other day than a sunny day. Shadows, exposure, light changes can indeed fuck up the scan, depending on how harsh the conditions are.
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>>704893
And always use manual settings for the camera!



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