Re: How to save a multi TIFF?

#1

The article on multi-frame TIFF files on my site is fairly comprehensive.

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"Heinz" <hzi (AT) itinionsoft (DOT) de> wrote

Quote:

Hi,

I want to save a multi TIFF. In my test I have found out that the method
Image.Save() cannot save a multi TIFF:

Image image = Image.FromFile( "Zahlen_1-20.tif" );
image.Save( "MultiTIFF.tif" );
image.Dispose();

So I create now a new Image, add each frame of the multi TIFF and save the
new image. This works fine, but the size of the new multi TIFF is now
about
450 KB instead of 65 KB.

Image image = Image.FromFile( "Zahlen_1-20.tif" );
int frameCount = image.GetFrameCount( FrameDimension.Page );
for ( int frameIndex = 0; frameIndex < frameCount; frameIndex++ )
{
byte[] frame = GetFrame( image, frameIndex );

// How must I add here the frame to a new multi TIFF Image, so the size
of the new image is about 65 KB ?
// The compression should be LZW.
}

public byte[] GetFrame( Image image, int frameIndex )
{
using ( MemoryStream stream = new MemoryStream() )
{
image.SelectActiveFrame( FrameDimension.Page, frameIndex );
image.Save( stream, ImageFormat.Tiff );
return stream.ToArray();
}
}

How can I save the multi TIFF so it has the same size as the original?

Thanks,
Heinz

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Re: How to save a multi TIFF?

Dotnet Framework (Drawing) microsoft.public.dotnet.framework.drawing

Re: How to save a multi TIFF? - 12-14-2007 , 03:14 PM