I want to remove only semi transparent pixels in a image. I want to keep others without changing them. How can i do that?
And is it possible to increase/decrease of all semi transparent pixels at one time?
For example: When i choose the increasing tranparency-alpha value at 20
if a pixels transparency is 120, it will be 140
if 75, it will be 95
if 255, keep it same
if 0, keep it same
sorry for bad english.