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Best photogrammetry software?
show user profile  Bolteon
Hey everyone,


I've got a project that I need some accurate modeling done and photogrammetry seems like the best option if the budget can't do laser scans.


Suggestions would be much appreciated...



Cheers.

-Marko Mandaric



read 1370 times
8/16/2015 5:50:48 AM (last edit: 8/16/2015 5:50:48 AM)
show user profile  herfst1
I saw this video recently (can't find the link) where this guy used photogammetry to make realistic bread with a homeschool setup. The results were good. Hopefully someone here remembers it and posts the link.

The setup was just getting a rectangular bucket and lining it with white paper or plastic, setting up a light source from above and a camera, and placing the object (bread, in this case) in the bucket and photographing it. Think the only limitations with this approach was the quality of camera you used.
read 1356 times
8/16/2015 6:15:39 AM (last edit: 8/16/2015 6:16:56 AM)
show user profile  ccampbell
Happy to help but the answer totally depends on what you want to scan. "Photogrammetry" is inherently limited and stereo photogrammetry gets expensive fast. What are you needing to scan? Do you need color? How big is it? Are you 3D printing it or just using for VFX / Visual?

Different scan methods allow different fidelity and results. One commonality though is if its transparent or too shiny, you wont get squat with any scanner. If you have a bigger budget I can recommend some great stereo photogrammetry set ups but they start around 5k and go up from there.

As a starting point, You can make a david Laser 3D Scanner for about 50-100 bucks and 1 day of effort. You wont get color with it but accuracy is decent.

If you need something more out of the box an older xbox kinect and reconstruct me / skanect may do the job but this is good for large things... people chairs etc... The benefit here is you get color with it.

Autodesk's 123D catch is actually decent for a mobile scanner but definitely not a first choice.

Regardless of what you use, even using the best scanners You'll need some kind of mesh clean up software. Scan data is dirty.




$Entrepreneur = if((Designer + Engineer)*Programmer){Problem Solver};



read 1352 times
8/16/2015 6:26:44 AM (last edit: 8/16/2015 6:26:44 AM)
show user profile  Bolteon
So far, from my 3D mailing lists' suggestions...


This has knocked my socks off:

http://www.agisoft.com/features/professional-edition/


Used to do this:



-Marko Mandaric



read 1346 times
8/16/2015 6:49:48 AM (last edit: 8/16/2015 6:50:07 AM)
show user profile  ccampbell
Yup sick set up but about 50k and you have to set it up and know how to use it. If you don't need instant capture your options increase dramatically and the costs decrease similarly.

Edit: it's worth mentioning - most of the scan data they show has already need cleaned up and not what the scanner puts out.




$Entrepreneur = if((Designer + Engineer)*Programmer){Problem Solver};



read 1344 times
8/16/2015 6:59:17 AM (last edit: 8/16/2015 7:03:50 AM)
show user profile  Bolteon
Technically, you could use a single camera and a rotating stand.


So, 1 camera.


Multiples are needed only when the subject... is living.

-Marko Mandaric



read 1343 times
8/16/2015 7:04:43 AM (last edit: 8/16/2015 7:04:43 AM)
show user profile  Garp
Marko, there's this thread on the Foundry forum that's been running for a few months. You might want to get in touch with its author.




read 1315 times
8/16/2015 1:00:10 PM (last edit: 8/16/2015 1:44:08 PM)
show user profile  ccampbell
Doesn't work like that. The background is just as important as the object scanning if your using photogrammetry. Totally different than structured light and laser scanners.

Notice all of the scan examples in garps link are big first of all but they all had to be walked around while shooting.




$Entrepreneur = if((Designer + Engineer)*Programmer){Problem Solver};



read 1305 times
8/16/2015 4:53:04 PM (last edit: 8/16/2015 4:55:21 PM)
show user profile  Coxy
Agisoft. For photogrammetry you want overlap and coverage of what's being processed. you can use one camera and just take multiple shots with overlap. You then need to mask out the background etc.



www.artasmedia.com
read 1283 times
8/17/2015 1:33:07 AM (last edit: 8/17/2015 1:37:33 AM)
show user profile  reeves1984
I also vote for Agisoft

--
Simon Reeves


www.simonreeves.com - VFX Artist & Blog
twitter


www.analogstudio.co.uk <-- I work here

read 1259 times
8/17/2015 11:41:18 AM (last edit: 8/17/2015 11:41:18 AM)
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