Microtek 3700 Betriebsanweisung

For Line Art images, the Brightness & Contrast screen becomes the 

Threshold setting, and the Threshold dialog box appears instead.

Threshold is the dividing line 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.

 

 

Before

After

1.  Drag the sliders to change the Threshold.

❍

     

To darken the original, drag the slider 

 to the right. 

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. This 

lowers the Threshold value so that more pixels are turned 

to white, resulting in a lighter image.

2.  Alternatively, you can enter a value in the Threshold edit box 

to change the Threshold.

3.  The Sharpen option lets you sharpen the Line Art image.