Microtek di 1210 Reference Guide
21
Threshold
The Threshold control is active only when the Attribute setting of the selected frame
image is Line Art. The default Threshold is preset to 128.
image is Line Art. The default Threshold is preset to 128.
To change the default Threshold setting, you should disable the “Auto Threshold”
setting in the Advanced Setting window. To do this, click the Advanced... button to
open its window, uncheck “Auto Threshold”, and click OK. Then return to the main
control panel to drag the slider, or enter a desired value in the Threshold edit box.
setting in the Advanced Setting window. To do this, click the Advanced... button to
open its window, uncheck “Auto Threshold”, and click OK. Then return to the main
control panel to drag the slider, or enter a desired value in the Threshold edit box.
Threshold is the dividing point between black and white; the range is 0 to 255, and
the default is 128. Thus, gray levels below the Threshold are converted to black,
while gray levels equal to or above the Threshold are converted to white, resulting
in a high-contrast, black-and-white representation of the image.
the default is 128. Thus, gray levels below the Threshold are converted to black,
while gray levels equal to or above the Threshold are converted to white, resulting
in a high-contrast, black-and-white representation of the image.
To darken the original, drag the slider to the right or enter a value in the edit box.
This increases the Threshold value so that more pixels are turned to black, resulting
in a darker image.
This increases the Threshold value so that more pixels are turned to black, resulting
in a darker image.
To lighten the original, drag the slider to the left or enter a value in the edit box. This
lowers the Threshold value so that more pixels are turned to white, resulting in a
lighter image.
lowers the Threshold value so that more pixels are turned to white, resulting in a
lighter image.
Original
Threshold: 50
Threshold: 200