Hi,

I am encountering a persistent problem in my blended panoramas, they
exhibit regularly spaced rows of 1 pixel high artifacts (sometimes in
sets of three or two) which look like Morse code starting from the
bottom of the image. Also there is an occasional thick black line at
the bottom of the image which generally does not extend the entire
length of the image.

I am running the pre-compiled Windows version of Hugin-2009.4.0 (built
by Allard) on independent W2k SP4 and XP SP3 systems plus I've
reverted to the previous version of Enblend/Enfuse as delivered in
Hugin-2009.2.0 all exhibit the similar problems.

As an example one problematic project file the pano source files are
eleven 16 bit uncompressed TIFFs (ProPhotoRGB colour space) generated
by PhotoShop CS of 102,072kB file size each, the final pano size is
24288x5445 and the output file is just over 1GB.  The Remapper is Nona
(interpolator; Sinc 256), blender is Enblend, output is TIFF
uncompressed.

The intermediate remapped images do not exhibit the errors described
in the final output file. Following is a 1:1 crop of one of the
affected areas towards the middle and at the bottom of the final
blended image:

http://home.swiftdsl.com.au/~distudio/temp/banding%20_crop.jpg ~1MB

I assume the source of the problem is Enblend and may be related to
source file size, I can't seem to find any way around it but to reduce
the output file dimensions significantly which is undesirable. I would
appreciate any assistance to resolve this issue.

Also as an aside I know that exiftool is supposed to write the colour
space of the source images back to the blended image at the end of the
script but from my experience this is not the case (I generally stitch
ProPhotoRGB CS images).

Cheers,

Rob

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