Filter
Top Products
3.2 Basic image functions
3-9
3.2.3 Binary reading
[A.4.7 SET WINDOW command / Image Composition = X’00’]
Following three parameters are available when binarizing the image. The 256 levels of the density at
each pixel is processed by Contrast and binarized by Threshold. When the White level following is se
ON, the white level of the CCD output follows the background of the document. So this is useful for
line art drawing but not for photograph.
Table 3.4 Parameter of Binarization
Parameter value Effect of parameter Default
Threshold
*1
X’01’
to
X’10’
to
X’FF’
Brightest
Normal
Darkest
X’80’
(*1)
Contrast X’01’
to
X’10’
to
X’FF’
Mostly soft contrast
Normal
Mostly sharp contrast
X’80’
X’01’
X’02’
X’03’
Normal
Soft
Sharp
Gamma
pattern
X’80’
to
X’84’
Use download pattern
X’01’
ON The threshold follows the background of
the document. (*2)
White level
following
OFF The threshold do not follow the
background of the document.
ON
*1 When the IPC-2D or IPC-3D is installed, the Threshold varies along with the control of DTC mode or
IPC mode.
*2 3 mm from top of the document must be white or drop-out color (See section 2.6.5)