RE: stitching images: Off the top of my head:
We're doing this the other way round! ...taking a pan to turn a scene "inside out" to project on the inside of our planetarium dome. Still, the stitching software is potentially useful. BTW: We use up to 10 projectors, but take more photos. These are stitched into a single 360 "fish eye" intermediate image which is the chopped into the segments for our projectors. Similar ideas may be relevant to your application. My colleague Mike Koziniak, (mkoziniak at spacecentre.ca ...our "all sky" projection guru) uses a tool available for free from the University Of British Columbia ..."Autostitch". http://www.cs.ubc.ca/~mbrown/autostitch/autostitch.html There's a link to a free demo hidden at the very bottom of the page. Unfortunately, it looks like that this free version has the limitation of assuming the camera is rotating within a scene, and not rotating around an object. This is fine for us of course, but you may need the full version for your work. On the plus side it works very well with the default settings. Apparently a best practice is to have LOTS of overlap (50%?) as this gives the stitching algorithm the most data to work on to establish the relationship between the content of adjacent images. Hope this is useful Dave =========================================== David Marsh Chief Technician & System Administrator H.R. MacMillan Space Centre 1100 Chestnut Street, Vancouver, BC V6J 3J9 E sysadmin at hrmacmillanspacecentre.com T (604) 738 7827 ext. 229 C (604) 813 9667 F (604) 736 5665 =========================================== For your next special event or meeting, consider the unique atmosphere of the H.R. MacMillan Space Centre. For more information go to www.spacecentre.ca or call (604) 738-7827 (ext 233) P Please consider the environment before printing e-mails -----Original Message----- From: mcn-l-bounces at mcn.edu [mailto:[email protected]] On Behalf Of Farber, Allison Sent: Wednesday, June 18, 2008 8:48 AM To: Museum Computer Network Listserv Subject: Re: [MCN-L] 3D Artifact Images, stitching together Dave, Thanks for your help. I'd like to hear more about how you produce the images. We may end up producing a couple hundred images ourselves. I'd also like to know how many photographs you take of each object. - Allison -----Original Message----- From: mcn-l-bounces at mcn.edu [mailto:[email protected]] On Behalf Of David Marsh Sent: Wednesday, June 18, 2008 11:42 AM To: 'Museum Computer Network Listserv' Subject: Re: [MCN-L] 3D Artifact Images, stitching together FYI: Actually stitching isn't too hard. Here at the planetarium we're all over stitching images together to make seamless images for our dome. We've been doing it for years and we've got pretty good at it. There are now some excellent software tools. I can get the details from one of my colleagues if you like. I get the impression it's pretty straightforward once you've got the hang and at least some of the tools are free to use (at least for non-profits). Hope that's helpful. Dave =========================================== David Marsh Chief Technician & System Administrator H.R. MacMillan Space Centre 1100 Chestnut Street, Vancouver, BC V6J 3J9 E sysadmin at hrmacmillanspacecentre.com T (604) 738 7827 ext. 229 C (604) 813 9667 F (604) 736 5665 =========================================== For your next special event or meeting, consider the unique atmosphere of the H.R. MacMillan Space Centre. For more information go to www.spacecentre.ca or call (604) 738-7827 (ext 233) P Please consider the environment before printing e-mails -----Original Message----- From: Farber, Allison Subject: Re: [MCN-L] 3D Artifact Images Do you stitch the photographs together in house or do you hire consultants? Can anyone recommend photographers and a consultants in New York who can do this kind of work? Thanks to everyone who offered advice on this issue! -Allison _______________________________________________ You are currently subscribed to mcn-l, the listserv of the Museum Computer Network (http://www.mcn.edu) To post to this list, send messages to: mcn-l at mcn.edu To unsubscribe or change mcn-l delivery options visit: http://toronto.mediatrope.com/mailman/listinfo/mcn-l _______________________________________________ You are currently subscribed to mcn-l, the listserv of the Museum Computer Network (http://www.mcn.edu) To post to this list, send messages to: mcn-l at mcn.edu To unsubscribe or change mcn-l delivery options visit: http://toronto.mediatrope.com/mailman/listinfo/mcn-l
