I don't know what you're experience was at Carnegie Tech / CMU, but we don't give credit for partial work here ;-p _______________________________________________________________________ stephen.gue...@simtable.com <stephen.gue...@simtable.com> CEO, https://www.simtable.com <http://www.simtable.com/> 1600 Lena St #D1, Santa Fe, NM 87505 office: (505)995-0206 mobile: (505)577-5828
On Fri, Jul 22, 2022 at 2:45 PM Frank Wimberly <wimber...@gmail.com> wrote: > Alternatively, bisect the segment S2 and draw a line from alpha to that > point. > > --- > Frank C. Wimberly > 140 Calle Ojo Feliz, > Santa Fe, NM 87505 > > 505 670-9918 > Santa Fe, NM > > On Fri, Jul 22, 2022, 2:38 PM Stephen Guerin <stephen.gue...@simtable.com> > wrote: > >> Yes, that's what I was calling "splitting the slanted face" this morning. >> Keep going... :-) >> _______________________________________________________________________ >> stephen.gue...@simtable.com <stephen.gue...@simtable.com> >> CEO, https://www.simtable.com <http://www.simtable.com/> >> 1600 Lena St #D1, Santa Fe, NM 87505 >> office: (505)995-0206 mobile: (505)577-5828 >> >> >> On Fri, Jul 22, 2022 at 2:29 PM Frank Wimberly <wimber...@gmail.com> >> wrote: >> >>> Drop a perpendicular from the alpha vertex to S2. >>> >>> --- >>> Frank C. Wimberly >>> 140 Calle Ojo Feliz, >>> Santa Fe, NM 87505 >>> >>> 505 670-9918 >>> Santa Fe, NM >>> >>> On Fri, Jul 22, 2022, 1:34 PM Stephen Guerin < >>> stephen.gue...@simtable.com> wrote: >>> >>>> Today at Friam, I showed a small problem I was working on in >>>> photogrammetry. Attached is a Netlogo visualization of the geometry of the >>>> system. >>>> >>>> The problem is: given an image where we know two star coordinates (RA, >>>> DEC), solve for the field of view of the image. We can get the spherical >>>> angle between the stars (alpha) and we know the principal point and two UV >>>> coordinates in the image. These create a right triangle pyramid and I want >>>> to solve for the height X (focal length). Here's a diagram. >>>> >>>> [image: rightTrianglePyramid.jpg] >>>> Law of Cosines can get all the interior angles of the bases with S1, >>>> S2, S3. >>>> >>>> >>>> >>>> _______________________________________________________________________ >>>> stephen.gue...@simtable.com <stephen.gue...@simtable.com> >>>> CEO, https://www.simtable.com <http://www.simtable.com/> >>>> 1600 Lena St #D1, Santa Fe, NM 87505 >>>> office: (505)995-0206 mobile: (505)577-5828 >>>> >>> -. --- - / ...- .- .-.. .. -.. / -- --- .-. ... . / -.-. --- -.. . > FRIAM Applied Complexity Group listserv > Fridays 9a-12p Friday St. Johns Cafe / Thursdays 9a-12p Zoom > https://bit.ly/virtualfriam > to (un)subscribe http://redfish.com/mailman/listinfo/friam_redfish.com > FRIAM-COMIC http://friam-comic.blogspot.com/ > archives: 5/2017 thru present > https://redfish.com/pipermail/friam_redfish.com/ > 1/2003 thru 6/2021 http://friam.383.s1.nabble.com/ >
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