(brightness and contrast on image) query win-command line
Posted: 2007-10-14T21:41:02-07:00
I am windows XP user, and using command line Convert.EXE
Suppose I have an Image I need to set its brightness level to -20% or +20%.
sameway on another Image I need to set its contrast level to -20% or +20%
I need the way how i will do it in IM.
This will be helpfull if you can give examples for each case.
The following I used but I am not sure what I am doing or it is the right way or not.
Suppose I have an Image I need to set its brightness level to -20% or +20%.
sameway on another Image I need to set its contrast level to -20% or +20%
I need the way how i will do it in IM.
This will be helpfull if you can give examples for each case.
The following I used but I am not sure what I am doing or it is the right way or not.
Code: Select all
convert flower.gif -fill white -tint 76 out_cbm080.gif
convert flower.gif -sigmoidal-contrast 8,100% out_cc02.gif
convert flower.gif -sigmoidal-contrast 2,0% out_ct08.gif