[Gimp-user] Despeckling photos

2020-01-14 Thread Gimp_Noob
>There's no simple answer - you have to d the best you can with what >you've got. Sometimes resizing (image->scale) by a factor of 3 can >help: open image->scale image, append > * 3 >to the width >and press tab, and GIMP will do the multiplication :) Use "cubic" >interpolation. > >Then blur the

Re: [Gimp-user] Despeckling photos

2019-12-20 Thread Liam R E Quin
On Fri, 2019-12-20 at 21:12 +0100, Gimp_Noob wrote: > What should I do if I only have a .jpg file? In other words,there is > nothing to scan. If I remove too many speckles it looks fake. There's no simple answer - you have to d the best you can with what you've got. Sometimes resizing

[Gimp-user] Despeckling photos

2019-12-20 Thread Gimp_Noob
>Consider a black speckle that's a square 4 pixels wide and high (for >an >example). > >The selection goes to the edge of the speckle, all round. > >Growing the selection by 2 pixels will make the marching ants meet in >the middle of the speckle - but there are no pixels of it left outside >the

Re: [Gimp-user] Despeckling photos

2019-12-04 Thread Gary Aitken
On 12/4/19 1:44 AM, Liam R E Quin wrote: On Wed, 2019-12-04 at 03:39 +0100, Gimp_Noob wrote: I have several photos which I'd like to try to clean up as best I can. First, scan at higher resolution than yu plan to use. At least double. SOmetimes i find that select by colour works well. (1)

Re: [Gimp-user] Despeckling photos

2019-12-04 Thread Liam R E Quin
On Wed, 2019-12-04 at 03:39 +0100, Gimp_Noob wrote: > I have several photos which I'd like to try to clean up as best I > can. First, scan at higher resolution than yu plan to use. At least double. SOmetimes i find that select by colour works well. (1) make sure you have both blacks andwhites in

Re: [Gimp-user] Despeckling photos

2019-12-03 Thread Guy Stalnaker via gimp-user-list
There are a lot of options. What I have used most is Wavelet Decompose (see here for an explanation - https://pixls.us/articles/skin-retouching-with-wavelet-decompose/ ). I fix old family photos that are usually full of scratches, etc. This technique works, but note it takes a lot of time to work

[Gimp-user] Despeckling photos

2019-12-03 Thread Gimp_Noob
I have several photos which I'd like to try to clean up as best I can. They all have similar problems. They look like a bad copy of a black and white photo with large amounts of speckling. I'm not sure which tools to use. Should I use some combination of blurs or masks?. Is there a particular