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Bugfix #27601

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Revision for previous fix; fast gaussian now survives on images
with a dimension smaller than 3 pixels!

Thanks Bastien Montagne for patch.
This commit is contained in:
Ton Roosendaal 2011-06-08 16:08:57 +00:00
parent 65ec26ab83
commit 43ec34f054
1 changed files with 5 additions and 1 deletions
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6
source/blender/nodes/intern/CMP_util.c
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@ -1320,7 +1320,11 @@ void IIR_gauss(CompBuf* src, float sigma, int chan, int xy)
if ((xy < 1) || (xy > 3)) xy = 3;
if (src->x < 2 && src->y < 2) return;
// XXX The YVV macro defined below explicitely expects sources of at least 3x3 pixels,
// so just skiping blur along faulty direction if src's def is below that limit!
if (src->x < 3) xy &= ~(int) 1;
if (src->y < 3) xy &= ~(int) 2;
if (xy < 1) return;
// see "Recursive Gabor Filtering" by Young/VanVliet
// all factors here in double.prec. Required, because for single.prec it seems to blow up if sigma > ~200