Testing for (mostly) blank page

[clocklear]

If possible, could I see an example of how to determine if an image (gathered from TWAIN) is mostly blank? I'm reading documents from a scanner with an ADF in duplex mode, and I'd like to leave out blank pages in my resulting PDF.

EDIT: Ok nevermind, I figured it out! I still think it'd be a great example though.

[Loïc]

The IsBlank() method can be used for that.

https://gdpicture.com/references/gdpictu ... Blank.html

ex:

Code: Select all

Dim nImageID As Long

Imaging1.TwainOpenDefaultSource
Imaging1.TwainSetHideUI (False)
nImageID = Imaging1.CreateImageFromTwain()
Imaging1.TwainCloseSource

If nImageID <> 0 Then
   If Imaging1.IsBlank(98) = True Then
      Call Imaging1.CloseImage(nImageID)
   End If
End If

Loïc