Set Color Channel For Black And White Bitmaps - HP 6300C - ScanJet - Flatbed Scanner 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
tool you can eliminate red, green or
White Threshold
blue from the image (see page
Scan a picture.
1
From the menu, select
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 threshold
4
(see page ).
93
T I P
The button in the
Auto
does not reset the color channel.
Adjusting images of
4
pictures
Black &
).
95
.
B & W Threshold
tool appears.
menu, select
Black & White
Black & White Threshold
Book Contents
Select a color channel from the
5
box in the
To eliminate all the red in colored line art or from a
drawing printed on red or pink paper, choose the
channel. The red components of each pixel in the
image will be mapped to white and green and blue
components of each pixel will be mapped to black.
To eliminate all the green in colored line art or from a
drawing printed on green paper, choose the
channel. The green components of 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
channel. The blue components of each pixel in the
image will be mapped to white and red and green
components of each pixel will be mapped to black.
tool
Index
Scan using channel
tool:
Black & White Threshold
HP PrecisionScan Pro User's Guide
+ $ %&
list
Red
Green
Blue
94