[scribus] Lighten dark colors

[JLuc]

Le 10/07/2020 à 09:56, JLuc a écrit :
> My new printer didnt provide an ICC profile file when asked (said it's not required afaicr).
> 
> Printed photos are not too bad but are quite often too contrasted
> and dark areas appear flattened and shifted to the very dark.
> Sometimes also the light areas appear also flattened and shifted to the very light
> but most issues are with darker areas.
> 
> I've asked some advices to the printer but i'm afraid i wont get usefull answer.
> (Do you sometime get any usefull answers from your printers ?)
> 
> As for now i'm thinking of bash-editing all images so as to curve the dark colors lighter.
> How could i best bash achieve this on linux ?

After trying a few parameters it looks like this command could do :
convert cheval.jpg -level -0%,100%,1.5 cheval-level0,100,1.5.jpg
My other questions remain open.

> What should i care do to avoid worsening the print ?

JL