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Re: [PanoToolsNG] Re: Pixels missing when trying to fix Nadir - Clarified again

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  • panokaemena@mac.com
    I prefer drag and drop like in CubicConverter ;-)))))) Willy ... Willy Kaemena http://homepage.mac.com/wkaemena/FSPanos/Menu268.html
    Message 1 of 10 , Feb 5, 2008
      I prefer drag and drop like in CubicConverter ;-))))))

      Willy

      On Feb 5, 2008, at 13:20, Dave 360texas.com wrote:

      > Anyone? Clarified - sorry posted this to the bottom of the wrong
      > thread... here it is on the correct thread.
      >
      > Maybe we should clarify our work flow
      >
      > Subject: wiki.panotools.org "Edit Zenith and Nadir in one go with
      > PTGui"
      >
      > The work flow allows you to relocate the bottom and top sections of
      > the
      > 2:1 panorama so that they are relocated to the center of the image
      > for
      > editing. The process is also reversable after editing.
      >
      > After stitching a 2:1 spherical image, reload it back into PTgui as a
      > single image.
      >
      > Lens Setting tab lens typs shows Equirectanglar, Horizontal Field of
      > View is 360 degrees, Advanced a,b,c are all 0.
      >
      > Panorama Settings tab Projection is Equirecetangle (for spheres) and
      > FOV
      > is 360 Hor x 180 Vert. Feather weight is 20, gamma is 1 and
      > Interpolator is Poly3, Morph to fit is disabled.
      >
      > Image Parameters tab change 0,0,0 to Yaw =90 Pitch =90 and Roll =0
      >
      > Create Panorama tab [ here is where the issues occur ]
      >
      > Issues: After yaw = 90 and Pitch = 90 the panorama editor now
      > displays
      > the panorama in a ZENITH left panel, and NADIR right panel. In the
      > center bottom side of the zenith and nadir panels there is an
      > INVERTED Y
      > with a set of white pixels streaming upward to almost the center of
      > both
      > panels. It is like warping was not completed.
      >
      > --------------- Test 1
      > Width 4000 x 2000, Locked aspect ratio,
      > TIF file format set to 16bit, no compression, no alpha
      > Used PTgui to stitch and PTgui blend using interpolator poly3.
      >
      > Result INVERTED Y and streaming Pixels
      >
      > --------------- Test 2
      > Width 4000 x 2000, Locked aspect ratio,
      > TIF file format set to 8bit, no compression, no alpha
      > Used PTgui to stitch and PTgui blend using interpolator poly3.
      >
      > Result INVERTED Y and streaming Pixels
      >
      > --------------- Test 3
      > Width 4000 x 2000, Locked aspect ratio,
      > TIF file format set to 16bit, no compression, no alpha
      > Used PTgui to stitch Panotools to warp only and PTgui blend using
      > interpolator poly3.
      >
      > Result : Inverted Y GONE
      >
      > --------------- Test 4
      > Width 4000 x 2000, Locked aspect ratio,
      > TIF file format set to 8bit, no compression, no alpha
      > Used PTgui to stitch Panotools to warp only and PTgui blend using
      > interpolator poly3.
      >
      > Result : Inverted Y GONE
      >
      > So we found the issue appears to be the warping feature in PTgui
      >
      > Hope this helps clarify the issue
      >
      > --- In PanoToolsNG@yahoogroups.com, "Rodrigo Alarcon-Cielock"
      > <alarcon@...> wrote:
      > >
      > > --- In PanoToolsNG@yahoogroups.com, "John Houghton" <j.houghton@>
      > > wrote:
      > > >
      > > > Rodrigo, I generated a remapped version of your large image
      > (with
      > > > missing pixels corrected) as per Peter's tutorial and reproduced
      > your
      > > > error when PTGui's stitcher was used. There was no error when
      > > > PTStitcher was used. The project file had the tif output set to
      > > > 16bits. I found the fault occurs with 16bit output but not 8
      > bit
      > > > output, and is therefore almost certainly the same remapping
      > problem
      > > > already reported.
      > > >
      > > > John
      > > >
      > > Hi John,
      > >
      > > After posting my last message and having a conversation with Dave
      > > Albright he reproduced the same results as mine after trying one
      > of his
      > > own panoramas. After playing around with the setting he found that
      > by
      > > using the following settings "Stitch using : "PTGUI but warp using
      > > Panotools", the error did not come back.
      > > The only diference is that if you use a .tif image size 9998 x
      > 4999,
      > > 16 bits, "No compression", "Normal"; Stitch using: "PTGUI (but
      > warp
      > > using panotools)"; Blend using: "PTGUI"; unchecked "use fast
      > > transform"; Interpolator: "poly3" and an output resolution of "300
      > ppi"
      > > the file size is 381Mb in size.
      > > If on the other hand you use the same settings as above but
      > choose "No
      > > Alpha Channel" the file size is 286Mb, and still no pixel missing.
      > >
      > > Thanks you very much to all of you, whom help to solve this
      > problem,
      > > perhaps Peter Nyfeler could now update the tutorial on how to
      > correct a
      > > Zenith and Nadir.
      > >
      > > kind regards,
      > >
      > > Rodrigo
      > >
      >
      >
      >

      Willy Kaemena

      http://homepage.mac.com/wkaemena/FSPanos/Menu268.html
      http://bremen.360cities.net/
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