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 Setting PixelType:=ieapMonochrome has no effect		  New Topic  Reply to Topic
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Valery

10 Posts
Posted - Nov 27 2013 :  07:29:40  Show Profile  Reply
I want to scan without WIA dialog in Monochrome;
But when im setting

ImageEnView1.IO.AcquireParams.PixelType:=ieapMonochrome;


it have no effect on scanning results.

Is there something i misunderstood ?

xequte

38616 Posts
Posted - Nov 27 2013 :  14:51:40  Show Profile  Reply
Hi

Specifying a PixelType will set a few WIA properties (WIA_IPA_BITS_PER_CHANNEL and WIA_IPA_CHANNELS_PER_PIXEL), but it is up to the driver to ensure they are used.

It may be better to apply a color reduction after the acquisition.



Nigel
Xequte Software
www.xequte.com
nigel@xequte.com
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Valery

10 Posts
Posted - Nov 28 2013 :  05:24:46  Show Profile  Reply
small clarification:

Everything works fine when ImageEnView1.IO.AcquireParams.VisibleDialog:=True.
I can set Monochrome in Windows Scanner-Setup dialog box and everything works fine.

But it unacceptable with ADF.
Each time ADF scanning a new page, it showing this dialog.

while FeederLoaded do
begin
ImageEnView1.Clear;
ImageEnView1.IO.Acquire;
end;

Im using HP MFP 2727 with ImageEn 4.1.4
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