proj-imim:
Optimizer
Marcus Bointon 2000-May-16 02:39:58
Hi All,
Still, after many, many hours, I can't get anything useful out of Panorama
Tools at all.
I'm trying to correct for a converter lens on a CoolPix 950. It's meant to
be a 0.42x converter, but the results look more like a full-frame fisheye
(so I'm not sure whether to tell PT that I'm using f0 or f3 images).
Initially I want to correct individual images so that they are rectilinear
(to use for single stills etc), but I'm looking to use this for panos too. I
have plenty of experience with stitching using other lenses, and indeed this
lens drops into PhotoVista uncorrected and stitches 90% perfect every time
with a fisheye setting. I'm in search of the extra 10%, and also the ability
to stitch in PT, QTVRAS etc, so I need to correct.
I've been through every tutorial and document I can find, shot arrays of
carefully set up test images, and placed innumerable control points.
I either get an image where it looks like nothing has happened, or I get a
screenful of complete garbage, where the picture is completely
unrecognisable.
Since nothing I have tried has even come close, I suspect this script has a
few problems as I'm essentially getting no feedback. The script is for a
test scene, constructed like Peter Murphy's example, with 3 images at 45
degree intervals, overlapping by about 30%:
p w1000 f1 v135
i w1200 h1600 f0 v72 r0.0 p0.0 y0.0 a0.1 b0.1 c0.1
i w1200 h1600 f0 r0.0 p0.0 y45.0 v=0 a=0 b=0 c=0
i w1200 h1600 f0 r0.0 p0.0 y90.0 v=0 a=0 b=0 c=0
v v0 a0 b0 c0
c n0 N1 x761 y223 X72 Y166
c n0 N1 x911 y320 X202 Y303
c n0 N1 x761 y572 X2 Y543
c n0 N1 x842 y893 X72 Y887
c n0 N1 x784 y1221 X48 Y1241
c n0 N1 x886 y1383 X186 Y1338
c n0 N1 x1018 y1108 X265 Y1096
c n0 N1 x1026 y829 X256 Y821
c n0 N1 x1075 y206 X384 Y230
c n0 N1 x1192 y361 X460 Y393
c n0 N1 x1161 y669 X393 Y671
c n0 N1 x1179 y1176 X426 Y1143
c n0 N1 x1155 y1471 X457 Y1409
c n0 N1 x1027 y560 X273 Y556
c n1 N2 x738 y430 X14 Y387
c n1 N2 x779 y757 X22 Y745
c n1 N2 x771 y1424 X95 Y1461
c n1 N2 x862 y1575 X229 Y1588
c n1 N2 x946 y103 X305 Y100
c n1 N2 x1049 y450 X327 Y453
c n1 N2 x1065 y881 X313 Y873
c n1 N2 x1027 y1226 X308 Y1210
Any help would be much appreciated.
Marcus
PS Given that this new QT stuff talked about at WWDC seems to use a cubic
mapping, is there a straightforward psphere-> cube remap in PT? I've seen
the VRML cube mentioned, but I couldn't find it.
--
Marcus Bointon
Synchromedia Limited: Putting you in the picture
#removed# | http://www.synchromedia.co.uk