I try but i am not too happy with the result
No much for the noise i could eliminate most
but the contrast at least the sample has a very poor contrast (there is not a pure white not a full black ) and that make harder get a good result.
For the noise first you should desautrate Color/desaturate, i get here better result with luminosity option
then you may use despeckle or a bit better use the wawelet denoise plugin (from
http://www.registry.gimp.org )
once you get out of most of noise then you may duplicate the layer, set the dup in darken only mode
Run now the Unsharpmask2 plugin
http://photocomix-resources.deviantart. ... 2-73998572Now for the setting , starting from the default raise the value of the slider called " -" , that as default is set to 0
having that layer set to dark only will avoid to sharpen also the noise (that in your case once desuturated is close to white )
here i used despeckle not the wavelet plugin (but only because i had no time to install it again )
i added on the top a slighly orange layer, with low opacity and in color mode to give a warmer tint
I didn't any manual work ...here as example would be badly needed on the lip where at the center there is a washed out line that somehow made the expression of the woman very sad
But manual edit will differ for each pic, while the basic routine may be similar for all the pics