User`s guide

Advanced Scanning
Page 40
For example, if you’re scanning a photograph of a child
standing in shadow, decreasing the gamma value
would increase the contrast between the child’s skin
tone and the shaded area, thus making it easier to see
the subject.
Histogram Tool
A histo
g
ram is a graph that represents values as
horizontal or vertical lines.
The histogram tool uses vertical lines to show the
intensity of the various tones in an image. The height
of a line indicates the intensity of the tone.
TWAIN.bk : Advanced.fm5 Page 40 Monday, September 8, 1997 11:30 AM