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Date Posted: 17:59:45 02/13/02 Wed
Author: Michel
Subject: Re: tif file not comressing and when faxed have gray background
In reply to: andy dyble 's message, "tif file not comressing and when faxed have gray background" on 13:45:25 02/13/02 Wed


Hi Andy,

There are two things. First, download <a rel=nofollow target=_blank href="http://www.intervalsoftware.com/files/entifgr.zip">http://www.intervalsoftware.com/files/entifgr.zip</a> which has an updated EnTifGr.Dcu which fixes a problem in the original 1.1 release where the tiff compression property was not saved.

When scanning are you scanning in B/W?

I am not sure what the intention of,

> ImageFormat := ifGray16 ;
> TiffCompression := tcGroup3_1d ;

is.

AssignFromDibHandle will create the image in the same format as returned by the scanner.

It seems you scanned image is grayscale. A B/W image should be about 10-80Kb when compressed with Group IV compression.

Best regards,

Michel

>Hi
>
>I have downloaded the demo 1.1 for Delphi 5. I can
>scan into the ImageScrollBox ok and save the tif but
>it is not compressed. Also if I then fax the image
>using any windows fax software it has a gray
>background and takes about 10 minutes to fax. Winfax,
>MS Fax, APro Fax.
>
>This is how I do it. (Code Below)
>Most is copied from the help file.
>
>Thanks
>
>Andy Dyble
>
>procedure TfmSitePlan.Acquire( const DibHandle :
>THandle;
> const XDpi : Word;
> const YDpi : Word;
> const CallBackData : LongInt
>);
>var
>
> Graphic : TTiffGraphic;
> ImageFormat : TImageFormat;
> TiffCompression : TTiffCompression;
>
>begin
>
> Graphic := TTiffGraphic.Create;
> try
> ImageFormat := ifGray16 ;
> TiffCompression := tcGroup3_1d ;
> Graphic.AssignFromDibHandle(DibHandle);
> Graphic.XDotsPerInch := XDpi;
> Graphic.YDotsPerInch := YDpi;
>
>
>
> Graphic.SaveToFile('\\toshiba\c\winapps\winida\scans\s
>can.tif');
> ImageScrollBox1.LoadFromFile('\\toshiba\c\winapps\wini
>da\scans\scan.tif',0);
>
> finally
> Graphic.Free;
>
> end;

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