On 6/10/07, DJ <[EMAIL PROTECTED]> wrote:
How do I know the numeric black (darkest) and white (lightest)
points of an image?
What is the easiest way to change the black and white points of a
group of images?
If I look at Levels it shows 0 and 255, as the range. The histogram
is, I guess, shows those points at the end, but is it numeric
Levels doesn't try to be excessively smart -- when you start up it is always
set to the same fixed values (which do nothing). Clicking the Auto button
will autodetect the white and black points (see the Red, Green, and Blue
The levels tool incorporates a way to select black, grey, and white points
in a similar way to eyedropping (in fact, the icons are eyedroppers.) - just
click on the icon, then on the appropriate point in the image. Then you just
need to set the output range to whatever range you want the black..white
points to be.
Gimp-user mailing list