Hello,

Lukas, thanks very much for your work.  I was just looking back at
your reply and it made me think to try producing the panorama with no
exposure correction by Hugin beyond the EV levels from the EXIF tag.
Interestingly, this produces a panorama with the same problems as
before, but the boxes are in different places (and bigger) than when
using full exposure correction.

Does anyone have any new information about this problem?




On Aug 17, 6:49 am, Lukáš Jirkovský <[email protected]> wrote:
> On 13 August 2010 11:18, JeCh <[email protected]> wrote:
>
> > I think I have the same problem with Hugin build 5161 on Windows (the
> > latest I could find).
>
> > I'm experiencing this with just 2 images taken with different
> > exposures. You can get them here:http://www.mediafire.com/?75iqb3493hh5y15
>
> > I'm not sure if I'm not doing something wrong, but with other sets I
> > have good results and my workflow is the same.
>
> > Vladimir
>
> Hello Vladimir,
> I took a quick glance at images you send here. Using align image stack
> to create hdr file I've got something not looking like HDR with some
> artifacts around edges but no boxes are present. It seems like the
> exposures were not determined correctly and only the brighter image
> was used.
>
> result:http://blender6xx.ic.cz/pub/strange_boxes_bug/align_image_stack.hdr
>
> Then I used align_image_stack to create the .pto file and stitched the
> file in hugin. The file shows the same behavior as the previous, only
> only the brighter part is used to create the image. It can be
> confirmed by looking at EV value in the Camera and Lens in Hugin. Both
> images gets the same EV value even though it should be different. The
> interesting thing is that Luminance can't open this file correctly but
> the viewer from pfstools can. The artifacts are not so visible, but it
> may be due to the different viewer used.
>
> result:http://blender6xx.ic.cz/pub/strange_boxes_bug/align_image_stack.ptohttp://blender6xx.ic.cz/pub/strange_boxes_bug/align_image_stack_pto.exr
>
> Then I used pto file from the last step, added a new lens and used
> "Load EXIF" which set the proper EV values. This one is finally
> correct, ie there ire details in both sky and the building. Again it
> can't be opened in Luminance but the pfstools can handle it.
>
> result:http://blender6xx.ic.cz/pub/strange_boxes_bug/align_image_stack_hugin...http://blender6xx.ic.cz/pub/strange_boxes_bug/align_image_stack_hugin...
>
> Last I tried to create the panorama completely in hugin. The
> optimization placed the on the edge of screen so I moved it manually
> to the center. Then I did the Stitch. This one becomes really
> interesting. It seems like the images suffers from heavy barrel
> distortion, but b is zero. I'll investigate this one more.
>
> result:http://blender6xx.ic.cz/pub/strange_boxes_bug/hugin_pure.ptohttp://blender6xx.ic.cz/pub/strange_boxes_bug/hugin_pure.exr
>
> Lukas

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