B/W threshold setting

Feature Requests for PaperScan.
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pocopoco
Posts: 1
Joined: Tue Apr 26, 2011 9:22 pm

B/W threshold setting

Post by pocopoco » Tue Apr 26, 2011 9:29 pm

Does PaperScan have the ability to set a B/W threshold point? ie at what point does greyish becomes white?
This is my first posting, be gentle :)

Loïc
Site Admin
Posts: 96
Joined: Fri Nov 05, 2010 12:38 pm

Re: B/W threshold setting

Post by Loïc » Thu Apr 28, 2011 2:17 pm

Hi pocopoco,

PaperScan does not apply linear transformation method to threshold an image, but Otsu's which is adaptive. This approach produces most of the time a better quality output.
So you can't expect to obtain a black pixel for a specific color-range. You can find more information about this method here: http://en.wikipedia.org/wiki/Otsu%27s_method

Kind regards,

Loïc

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