I noticed that with Gaussian blur, the Radius setting in GIMP means
something different than in Photoshop CS3.

As a test, I made a black square on a white background and used Gaussian
blur on it with Photoshop CS3 and the current development version of GIMP
with radius 6.0 pixels. Photoshop blurs the image much more heavily than
GIMP; to get the same effect with GIMP, I had to set the radius to
approximately 19.0 pixels.

Is Gaussian blur not a standard algorithm that has a well-defined meaning
for the radius? See for example http://en.wikipedia.org/wiki/Gaussian_blur

If it is, then which one is doing it wrong, CS3 or GIMP?

-- 
Jesper de Jong
[EMAIL PROTECTED]
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