2009/9/20 John Robert Peterson <[email protected]>: > now hugin/panarama tools/sift has a strong concept of control points, so > does warper -- is there any way that we could get them to use the same > points, and bolt the 2 together automatically? > > nearly a week ago I posted the following, any further thoughts on it:
I must have missed that email. > The ideal situation for me would be if we could have some automated tool on > a sever somewhere receiving images from users, and automatically rectifying > them. > > This sounds imposable, but I believe that with a very small amount of user > help it could work: > Images can be automatically pinned together in overlaps (and high res images > can be pinned onto wide area images) using tools similar to those in > Panorama Tools / hugin (this searches for notable points in the image data, > and matches them between images); > searching the images for road markings (and/or cars) and matching these to > the gps traces already uploaded would give a reliable enough way to add real > world control points; > if a concept of altitude is added, automatic control points between images > appearing on top of skyscrapers would not be too damaging; > approximate terrain relief for most of the planet is already known, this can > be tied into the above to help; > manually adding control points would be done by displaying already rectified > images next to a map, with the user adding pins to useful points; > images with no rectification data at all would be added using a push pin > system similar to that used on http://warper.geothings.net/ > > the above is a pipe dream at the moment, but has the potential to > revolutionise how we do things in my opinion. This sounds like it could be very useful if it turns out to be possible. However, rather than Hugin/ Panorama Tools I think that something like Bundler would be much more resiliant and automatic. OpenStreetPhoto mention that they're planning on using Bundler but I don't believe that they've actually done anything with it yet. However, it would (theoretically) allow all the images to be put together in a 3D space and create a sort of textured 3D model of the area. This could then be projected down onto a DEM or a flat plane for tracing over. It would essentially solve the ortho-rectification problem and only require us to align the image to coordinates. So, there's another pipe dream for you :) -- Matt Williams http://milliams.com _______________________________________________ Talk-GB mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-gb
