On Mon, 27 Dec 2021, 15:43 [email protected], wrote: > > On Monday, December 27, 2021 at 9:56:13 AM UTC-5 [email protected] wrote: > >> all the images are projected is at a Z distance of 1. >> > > I'm taking that as the definition of the units X, Y and Z are all in. I > want to use some math to verify that I understand what that means. > > I suddenly realize I don't know whether we normally talk about "angle of > view" horizontally or diagonally. I'm more comfortable with horizontal. >
panotools/Hugin uses the horizontal angle of view in degrees. There is a quirk which is that the lens parameters are mapped to the narrowest dimension of the image which is not the width for landscape images. If I'm doing my trig correctly, the width of the field of view matches its > distance when the angle of view is 53.13 degrees. If that was the total > angle of view of the resulting mosaic, then the X value of each photo would > range from -0.5 though +0.5 based on the fraction of full mosiac width that > each component photo is off center. > For a narrower angle of view, those X numbers would be smaller (as in the > test I mentioned in which 0.1 was a "large" value for X). > > The range -0.5 to 0.5 would be shifted if the anchor image were off > center, and could also be increased or decreased if the yaw were nonzero. > > For a rough understanding of the scale of X, Y have I got that right? > Yes I think so -- Bruno > -- A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ --- You received this message because you are subscribed to the Google Groups "hugin and other free panoramic software" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/hugin-ptx/CAJV99ZjKiY51ec6Zk6FK6Pi%3DUEn_7UbbBGSqguG5iPAUS_ROMg%40mail.gmail.com.
