--- In script-fu@xxxxxxxxxxxxxxx, "Mihai Basa" <mihaibasa@xxxx> wrote: > > Hi Tim! > > I was saying something a bit different. First of all, here's what I'm > assuming the script does: > > 1. the script creates a "most saturated" version of the image and > offers it to you as a layer. > 2. then you adjust the intensity of the saturation effect by shifting > the opacity of the layer down from 100% (unless you like the "most > saturated" version and then you just keep the opacity at 100%). > > Step 2 is perfectly reasonable, but I see a problem with step 1. How > do you generate a "most saturated" version and still make sure that > you are not clipping any colours? Is the saturation process > clip-proof? And if it is clip-proof... won't it be too weak if only a > small insignificant portion of the image (a "hot" pixel for example) > is over-saturated already? > > The problem with colour-clipping would be that you would loose colour > *detail* (all the pixels will now have the same, maximum, saturation > now) in the clipped parts, which you won't recover completely by > reducing the opacity of the layer. > > This is why I thought the idea of a "most saturated" layer would work > less-than-best in some situations. > > Mihai > Hi Mihai, It works on the whole image, so it is not clip-proof in any way at all.. I am not sure if there is a way to detect clipping, but no, you have to decide how much is "too much saturation".. Right now, there are about 5 levels. You can select one of the levels suitable for your image, then use the sliding opacity to sort of "undo" or "fade" the effect to the desired level. If clipping occurs, the reduced opacity will also reduce the effect of clipping. Other wise, you can also try to mask out the clipping region, so the original layer at the bottom will "shine" through to the top ;-) If 5 levels is insufficient, you can repeat the script on the new layer, but at the cost of futher loss of image detail.. However, i would agree with you that a level slider would probably be the best solution. It is not difficult to do it, so i will include that in next version. After all, this is the strength of programming, it is more powerful than macro-recording ! lasm ------------------------ Yahoo! Groups Sponsor --------------------~--> Fair play? Video games influencing politics. Click and talk back! http://us.click.yahoo.com/T8sf5C/tzNLAA/TtwFAA/e4wwlB/TM --------------------------------------------------------------------~-> Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/script-fu/ <*> To unsubscribe from this group, send an email to: script-fu-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
