Am 31.01.2010 04:15, schrieb dmg:
The real challenge is finding out what the math being their transformation is.
This can't be too difficult. Helmut apparently found it out in one evening or so. Now lets see: If I use rectilinear output VP X moves the image in X direction, VP Y moves it in Y direction and VP Z zooms it (Z direction). Those operation leave the image geometry intact (aspect ratio and angles).
VP Pan distorts the image perspectively in horizontal direction (such that f.e. the left edge is shorter than the right one but both are still vertical) and VP Tilt does the same in the other direction (such that f.e. the lower edge is shorter than the upper one but both are still horizontal).
I have a result image width of 160°, the source image has 100° rectilinear HFoV. I need app. VP X of 4.48 to shift it such that it's right edge touches the edge of the result image. For a VP Pan of 29.99 it touches the edge too, but heavily distorted.
I currently don't understand those numbers, but I think someone who knows the geometry of viewpoint correction better than me should get an idea what's going on.
-- Erik Krause http://www.erik-krause.de -- 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 [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/hugin-ptx
