Project Video Scanner

Krisidious

You're blowing my doors off...

kaas

You're blowing my doors off...
I don't think thats a good thing or...? Kristoff, I'm sorry if I hijacked your thread. I just thought, these programs and their results were related and thus relevant.

juju

@kaas said:

Excited about these techniques, I did some tests with VisualSFM & CMPMVS.
You don't need a stereo camera and a normal camera will do just fine. Just need a lot of overlapping pictures. Take a video and export every 10th frame as a picture worked fine as well.

Tried it on the exterior of a nearby mill. Calculation of the 3d model using these programs took several hours - 123D created the 3d model in several minutes but it had less detail (64k vertices vs 1.1M vertices) and the textures looked blurry.

The end result resembles the building but it's not really useful to me (yet):

Nothing is flat in the 3d model - even if the real thing has flat surfaces. That will make rebuilding a low poly object in SketchUp difficult - how to decide which bump/point of the model to snap to??

It's hard to get the (textured) model into SketchUp. Meshlab opens the model in seconds. Blender in a minute, SketchUp's ply importer is already busy for 3 hours and I'm not sure if it will ever finish. Maybe have to split up the large model in Blender into smaller ones and rebuild it in SketchUp?!

Also:

reflective surfaces don't work well (found that one out 'scanning' a table with some objects on it)

the software needs 'anchors' to match the individual frames. For more large uniform planes (ceiling, white walls etc) the software can't find matches so that results in large gaps.

Still, it's fun to see the software build something 3d out of pictures.

can you share some details?

which cameras used (also, FOV lense specs)
what resolution
size of *.ply files
how long did these take to process
what is you system specification
anything else relevant that you have not previously mentioned...

kaas

Hi Juju, here's some answers:

which cameras used (also, FOV lense specs) -> I tried a Olympus SP600UZ and that worked fine. For the mill I used a 1080p video, made with a Samsung Galaxy S3 - used Blender to convert every 10th frame of the video to a single image.
what resolution -> 1920x1080
size of *.ply files -> high quality file was 95MB, low quality was 8.9 MB
how long did these take to process -> I think it was four hours for both programs
what is you system specification -> Win 7 X64 - 3.4Ghz (I5 3570) - 8GB - GTX560TI
anything else relevant that you have not previously mentioned -> its fun. Just try shooting some pictures and feed it into those programs and off you go.

to get you going, maybe have a look at some youtube videos. I don't have the link at the moment but there are some showing these two programs after another.

Krisidious

Oh it's a good thing... You're doing just fine. add all you want. It's not my thread... It's community property. I'm loving that you're testing.

JQL

@kaas said:

Take a video and export every 10th frame as a picture worked fine as well.

What software did you use to do that?

kaas

@jql said:

@kaas said:

Take a video and export every 10th frame as a picture worked fine as well.

What software did you use to do that?

I think I used Blender

juju

Progress Update!

http://projectvideoscanner.blogspot.co.za/