On Fri, Jan 2, 2009 at 6:25 PM, Max Lyons <max.ly...@verizon.net> wrote: > > Dan, > > Great picture! A perfect location for this type of projection. >
Thanks Max. I think I finally go the original panini right: http://turingmachine.org/~dmg/temp/equiToCentralCylindricalToPaniniCorrect.jpg it looks very close to your 1:2. I am using mathlab so I don't have very good control of the field of view. But I am going to try see if I can fix libpano. --dmg > As Tom pointed out earlier today, I have added a number of new projections > into > PTAssembler, one of which ("recti-perspective") appears to be quite similar to > the Panini projection. That said, here's a page with a few examples I > generated in recti-perspective projection using your image (about 235x120 > degrees). > > http://www.tawbaware.com/forum_posts/recti_perspective.htm > > I think that we must have a slightly different projection formulas because our > results look a little different, although they seem quite similar in the > central regions. > > Max > > >> >> >> Hi everybody, let us get our understanding of what the projection is >> supposed to do first. >> >> I am confounded by a lack of a good test case. So here is an image >> that I suggest we should use to test our "versions" of Panini. >> >> http://turingmachine.org/~dmg/temp/equirectangular.jpg >> >> It is 3000x1500 pixels. I understand the geometry of this building >> well, and there are only straight lines in it, with only 90 degrees >> angles. the sides of the staircase run parallel to the side walls. The >> far away walls and the back walls are all orthogonal. The area where >> the tripod was placed is below a lower ceiling (appears very curve in >> the image). >> >> Here is my version of Panini: it is 226 x 123 degrees field of view. I >> am projection from the equirectangular, to cylindrical, and then to >> stereographic. >> >> http://turingmachine.org/~dmg/temp/equiToCentralCylindricalToPanini.jpg >> >> I really like it. The only area where it breaks down is on the roof of >> the ceiling above the tripod. >> >> Can all of you generate your versions, also at a width of 3000 pixels >> from this image? >> >> --daniel >> >> >> >> >> > > > > > > > -- --dmg --- Daniel M. German http://turingmachine.org --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "hugin and other free panoramic software" group. A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ To post to this group, send email to hugin-ptx@googlegroups.com To unsubscribe from this group, send email to hugin-ptx-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/hugin-ptx -~----------~----~----~----~------~----~------~--~---
