Hi All The latest versions of libpano (SVN 1235) and hugin (SVN 4911) add the General Pannini Projection to PanoTools and hugin. I have done a good deal of work on the interface between hugin and libpano to support dynamic FOV limits and make the preview windows handle FOV changes better for all projections. I think you will like the results.
Please test on your system; I have only built and tested for 32-bit Windows. You can download a 7zip self-installing archive of my Win32 build from http://tksharpless.net -- click "Free Panoramic Software" and select hugin-2010.1.0.4911.exe. The General Pannini projection has three parameters. The main one, "cmpr" zooms the projection continuously from rectilinear at cmpr = 0, to standard Pannini at cmpr = 100, to the highly compressed orthographic cylindrical projection at cmpr = 150. The other two apply vertical corrections ('squeezes") separately to the top and bottom halves of the image. The squeeze parameters are bipolar, with no squeeze in the middle (tops or bots = 0). Negative values give a "soft squeeze" suitable for very wide views such as landscapes. Positive values give a "hard squeeze", designed for architectural interiors and the like, that can exactly straighten horizontal lines over fields of view up to about 150 degrees. I am preparing a page for the PanoTools Wiki with examples and all the details. The older "panini" and "equirectangular panini" projections are still present, however I think it would now be appropriate to remove them from libpano. The one called "panini" is not in fact the Pannini projection; "equirectangular panini" is -- it implements the stereographic cylindrical projection, that Bruno and I named the Pannini projection about a year ago. However it is identical to the General Panini with default parameters (100, 0, 0) so is now redundant. Best, Tom
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