GSR - FR wrote:
Hi,
[EMAIL PROTECTED] (2007-04-30 at 2137.21 -0300):
could you provide more instructions to reproduce the error,
Well, cannot tell you more...
Adaptative, nonrecursive, 1 pixel radius, black=7, white=248.
A 5 pixel cross in the middle of a white image,
and I got a NONSYMMETRIC 6 pixel output like this:
x
xxx
xx
I see what you describe, with the 5 pixels being grey #88888 and the
bg #ffffff. A longer cross (3 pixels each arm plus the center pixel)
also returns something interesting:
x x
x xx
x xx
xxxxxxx -> xxxxxxx
x xxxxxx
x xx
x xx
Repeating the filter makes it grow to the bottom right a bit each
time.
GSR
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IMHO this comes from the histogram correction, try the same with a black
(000000) cross and white (FFFFFF) background.
see :
2004-10-30 Sven Neumann <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>
* plug-ins/common/despeckle.c: applied a patch from Geert Jordaens
that improves the Despeckle algorithm. See bug #72862
<http://bugzilla.gnome.org/show_bug.cgi?id=72862>.
The problem is that due to histogram correction some pixels are thrown
out in this case the white pixels are thrown out.
In the patch of 30-10-2004 I allowed the value of black to be -1 and
white to be 256 to disable the histogram correction.
Geert Jordaens
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