On 25/04/07, gg@xxxxxxxxxxx <gg@xxxxxxxxxxx> wrote: > On Tue, 24 Apr 2007 20:57:43 +0200, Sven Neumann <sven@xxxxxxxx> wrote: > > > Hi, > > > > On Wed, 2007-04-25 at 02:41 +1000, Jasper Schalken wrote: > >> This is what I thought was a bug (I posted > >> herehttp://bugzilla.gnome.org/show_bug.cgi?id=432978) but Sven Neumann > >> says I should discuss it on here first. > > > > Your video shows the blur tool being used on large areas of black color > > and small areas of white color. The average of this is a dark gray. Now > > when you continue to blur, you are mixing a dark gray with black. If you > > go further, you end up with all black. > > > > But there could very well be rounding errors in the blur tool code. > > There are even most definitely rounding errors as we are only working > > with 8bit per channel and rounding errors are unavoidable then. But > > please take a look at the code and see if there's anything we could > > change to improve this. > > > > > > Sven > > Jasper , your bug says: > > >> It's algorithm > >> appears to favour dark colours when they are included in the blur. > > Why do you say that? Does it still favour dark colours if the image is > predominantly white? > > >> From my understanding, the average lightness of a given image should > >> always > >> remain constant as it is blurred. > > What is your understanding , of what blur tool? > Is there some specific blur algorithm that you believe does preserve > lightness or is this just an assumption you were making? > > Maybe you could be more precise about what blur you are refering to , > there are several IIRC. > > Please try to be a little more specific about what you are reporting. > > Thanks. > _______________________________________________ Gimp-developer mailing list Gimp-developer@xxxxxxxxxxxxxxxxxxxxxx https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
