Jesper de Jong wrote: >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 The answer is no, there is not a single well-defined meaning. From a mathematician's point of view, the equation contains an "r" parameter which it is natural to call the radius, but if you use that value, it will look to a user like the blur extends considerably farther outward. GIMP instead tries to use a scale such that the blur appears to a user to extend for approximately the specified distance. This is a matter of judgement, but the usage is consistent and seems to come close to matching people's intuition, as far as I can tell. -- Bill ______________ ______________ ______________ ______________ Sent via the CNPRC Email system at primate.ucdavis.edu _______________________________________________ Gimp-developer mailing list Gimp-developer@xxxxxxxxxxxxxxxxxxxxxx https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer