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Date Posted: 17:45:23 09/25/00 Mon
Author: Michel
Subject: Re: Inverted Black & White scans
In reply to: Matthew Harding 's message, "Inverted Black & White scans" on 09:21:31 09/25/00 Mon


Hi Matthew,

I'm not sure why this is happening. Can you email me a small resulting tiff file?

Also, does your driver have an invert option? Many black and white scanners have such an option. If you do, do you get the same result when the option is active?

Best regards,

Michel



> I'm using Envision with Delphi 5 and a Fujitsu/Kofax
> scanner with Kofax TWAIN drivers. In your demo app if
> I scan a multi-page document the final image frames
> get inverted (negative). However the images displayed
> in the IMAGESCROLLBOX from the ONACQUIRE procedure
> ("ImageScrollBox.Graphic := pScanInfo^.Graphic;")
> appear OK, it's only when the final LoadFromFile
> (TMainForm.ScanMenuClick(Sender: TObject);) is called
> that images are inverted.
> "if ScanInfo.MultiPage then
> ....
> if ScanInfo.ImageCount > 0 then
> LoadFile(FileName);"
>
> Scanning a single image is OK as the loadfromfile is
> never called, the imagescrollbox is updated by the
> OnAcquire procedure only.
>
> Can you please advise
>
> Regards
>
> Matthew

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