Set Color Channel For Black And White Bitmaps - HP 6200C User Manual

Set color channel for black and white bitmaps

When you want to save a black and white bitmap
of a picture that has been printed or photocopied
on colored paper, or want to create a special
effect, you can change the color channel used in
the final scan.
Eliminating a color from the image
By changing the color channel setting in the
& White Threshold
or blue from the image (see page
Scan a picture.
1
From the
2 Tools
The
Black & White Threshold
From the
3 Output Type
.
Bitmap (raster)
The image changes to black and white.
Decrease the value for the black and white
4
threshold (see page
T I P
The button in the
Auto
tool does not reset the color
Threshold
channel.
Adjusting images of
4
pictures
tool you can eliminate red, green
).
88
menu, select
B & W Threshold
tool appears.
menu, select
Black & White
).
86
Black & White
Book Contents
Select a color channel from the
5
channel
tool:
To eliminate all the red in colored line art or
from a drawing printed on red or pink paper,
choose the
each pixel in the image will be mapped to white
and green and blue components of each pixel
Black
will be mapped to black.
To eliminate all the green in colored line art or
from a drawing printed on green paper, choose
the
Green
.
each pixel in the image will be mapped to white
and red and blue components of each pixel will
be mapped to black.
To eliminate all the blue in colored line art or
from a drawing printed on blue paper, choose
the
Blue
pixel in the image will be mapped to white and
red and green components of each pixel will be
mapped to black.
Index
list box in the
Black & White Threshold
channel. The red components of
Red
channel. The green components of
channel. The blue components of each
HP PrecisionScan Pro User's Guide


Scan using
87