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Date Posted: 07:09:39 10/09/01 Tue
Author: Michel
Subject: Re: Convert a 16bit TIFF to a 4bit TIFF
In reply to: Heiko 's message, "Convert a 16bit TIFF to a 4bit TIFF" on 06:25:53 10/08/01 Mon


Hi Heiko,

Try using,

EnMisc.ifColor16 instead of just ifColor16. The TImageFormat type is from EnMisc. This will avoid confusion if you have another unit that may have ifTrueColor.

Best regards,

Michel

>Hello together!
>
>I have a lot of 16 bit TIFF - images, but they have
>only 16 defined colors. Now I would like change the
>colordepth of the 16 bit TIFF - Images to 4 bit.
>
>I have tried the following code without success,
>because the compiler show the errormessage 'Undeclared
>identifier: 'if16Color''. When I use 'ifTrueColor' I
>donīt get a errormessage.
>
> ...
>
> if isatif then
> begin
>
> thefilestream := Tfilestream.create
>thefile,fmOpenRead);
> newfilestream :=
>Tfilestream.create(newfile,fmCreate);
>
> thetifgraphic := TTIFFGraphic.create;
> thetifgraphic.LoadFromStream(thefilestream);
> if FlatComboBox2.Text = 'PackBits' then
>thetifgraphic.Compression := tcPackBits;
>
> thetransform := TImageFormatTransform.Create;
> thetransform.ImageFormat := if16Color;
> thetransform.apply(thetifgraphic);
>
> thetifgraphic.savetostream(newfilestream);
>
> thefilestream.free;
> newfilestream.free;
>
> end;
>
> ...
>
>Where is the problem?
>
>Thanks in advance.
>Heiko

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