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Image 1 below is the original scanned image, while in Image 2 the threshold value is changed into 70.
This means that pixels in the image with a brightness level below 70 will all be cut into black, and those with a bright-
ness level above 56 are all turned into white. Therefore, you will find that by setting a lower threshold value, some
details are lost in the new image. However, if there are many unwanted dots in an image, you can eliminate them.
To set a value you can drag the triangular slider or input a value in the text box.
Default parameters are:
Item
Range
Default value
Threshold
0~255
128
Image 1
Image 2
Summary of Contents for 7400UT
Page 1: ...Electronic User s Manual...
Page 27: ...Closing Mirascan 5 10 To close Mirascan 5 10 click the button Click this button...
Page 40: ...Auto Function Same as in Options for Scan to File...
Page 59: ...The Console Mode Control Window Preview Window...
Page 62: ...PREVIEW WINDOW Preview area Ruler Window resizing handle Frame tool buttons...
Page 87: ...Auto Function Same as in Options for Scan to File...