[ Show ]
Support VoyForums
[ Shrink ]
VoyForums Announcement: Programming and providing support for this service has been a labor of love since 1997. We are one of the few services online who values our users' privacy, and have never sold your information. We have even fought hard to defend your privacy in legal cases; however, we've done it with almost no financial support -- paying out of pocket to continue providing the service. Due to the issues imposed on us by advertisers, we also stopped hosting most ads on the forums many years ago. We hope you appreciate our efforts.

Show your support by donating any amount. (Note: We are still technically a for-profit company, so your contribution is not tax-deductible.) PayPal Acct: Feedback:

Donate to VoyForums (PayPal):

Login ] [ Contact Forum Admin ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: 12345678[9]10 ]

[ Next Thread | Previous Thread | Next Message | Previous Message ]

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,


> 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

[ Next Thread | Previous Thread | Next Message | Previous Message ]

[ Contact Forum Admin ]

Forum timezone: GMT-5
VF Version: 3.00b, ConfDB:
Before posting please read our privacy policy.
VoyForums(tm) is a Free Service from Voyager Info-Systems.
Copyright © 1998-2019 Voyager Info-Systems. All Rights Reserved.