BenQ 7400UT User Manual - Page 133
Threshold Tab, image from 0 to 255, from left to right. The y-axis represents the quantity of pix
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THRESHOLD TAB The Threshold tool is very useful when you scan line-art images or scan documents for OCR use. You may use this function to adjust the quality of line art images or eliminate unwanted dots in the document to improve the accuracy of recognition. Note: This function is only applicable when you select Line Art as the Image Type. The x-axis in the histogram represents the brightness level of the pixels in the image (from 0 to 255, from left to right). The y-axis represents the quantity of pixels. To adjust the threshold value, drag the triangle below the histogram or enter the threshold value in the Threshold entry box directly. For example:
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T
HRESHOLD
T
AB
The Threshold tool is very useful when you scan line-art images or scan documents for OCR use. You may use this
function to adjust the quality of line art images or eliminate unwanted dots in the document to improve the accu-
racy of recognition.
Note: This function is only applicable when you select Line Art as the Image Type.
The x-axis in the histogram represents the brightness level of the pixels in the
image (from 0 to 255, from left to right). The y-axis represents the quantity of pix-
els.
To adjust the threshold value, drag the triangle below the histogram or enter the
threshold value in the Threshold entry box directly. For example: