COLMAP is an open source structure-from-motion and multi-view stereo software and is hopefully useful for people here as well: https://colmap.github.io/, http://people.inf.ethz.ch/jschoenb/colmap/
Denser 3D Point Clouds in OpenSfM
31–37 of 37 posts
Re: Denser 3D Point Clouds in OpenSfM
#32Is it possible to use images from say Google Street View to reconstruct 3D city model with this tool? Maybe it could fall into fair use for small part of city...
You'll want to use the OpenStreetView dataset for that, which has a much more liberal license for collected images than Mapillary. (OSV is a direct competitor to Mapillary, with OSV being sponsored by Navteq) http://openstreetview.com/terms/ You might also consider mining Flickr by geotag, constraining to CC licenses that allow for use.
> OSV is a direct competitor to Mapillary, with OSV being sponsored by Navteq
s/Navteq/Telenav/
Re: Denser 3D Point Clouds in OpenSfM
#33Earlier quoted context omitted.
You'll want to use the OpenStreetView dataset for that, which has a much more liberal license for collected images than Mapillary. (OSV is a direct competitor to Mapillary, with OSV being sponsored by Navteq) http://openstreetview.com/terms/ You might also consider mining Flickr by geotag, constraining to CC licenses that allow for use.
> OSV is a direct competitor to Mapillary, with OSV being sponsored by Navteq s/Navteq/Telenav/
I goofed. My apologies.
Re: Denser 3D Point Clouds in OpenSfM
#34What techniques are available to transform point clouds like these into closed polygonal meshes (like the ones you see in Google Earth where 3D imagery is available)?
Re: Denser 3D Point Clouds in OpenSfM
#35Earlier quoted context omitted.
A camera. That's where Mapillary and OSV get their imagery from, people that decide to go out and take pictures. An additional advantage is that you then have full rights to the imagery (so for example, you can upload them to both services).
That'd work of course! Bit more of a schlep to build out your processing pipeline to ingest those images, store them, and then render them with OpenSfM, but could definitely be done.
Oh yeah, it'd be quite some work, especially if small isn't small. But I think at the moment, neither OpenStreetView nor Mapillary can be relied on for coverage, so the shortcut of using images gathered by others isn't widely available.
Re: Denser 3D Point Clouds in OpenSfM
#36So why can't this be used instead of LIDAR for Self-Driving cars?
Experts?
Re: Denser 3D Point Clouds in OpenSfM
#37I discovered VisualSfM this weekend after trying Adobe ReCap 360. The photo reconstruction functionality of ReCap is cloud based, which was a blocker for me, because I have a beefy graphics rig and want to script it into a pipeline. I am curious how OpenSfM compares to VisualSfM and if they are related in any way. Edit: The VisualSfM license is only open for non-commercial uses. OpenSfM is BSD licensed, so I can safe…
Adobe doesn't make ReCap 360, Autodesk does.