Getting Image Compression Info in VB.NET

[Corey Ellsworth]

I have an existing TIFF file on disk. I need to be able to read the image
compression information for this file using VB.NET. I am trying to verify
that all files coming into my system are CCITT Group 3 or Group 4 TIFFs. I
have found the methods to use to write Group3 and Group4 TIFFs, but I cannot
seem to read the compression type of an already existing TIFF. Does anyone
know how to do this in VB.NET? Thanks for the help.

Regards,

Corey Ellsworth

[Mike D Sutton]

> I have an existing TIFF file on disk. I need to be able to read the image

> compression information for this file using VB.NET.<snip>

Http://www.mvps.org/EDais/DotNet/
You may also want to post to GDI+ groups such as microsoft.public.dotnet.framework.drawing
Hope this helps,

Mike

- Microsoft Visual Basic MVP -
E-Mail: ED...@mvps.org
WWW: Http://www.mvps.org/EDais/

[marrisa]

<quote> I have an existing TIFF file on disk. I need to be able to read

Regards,</quote>
uh, is there some problem with the code you used? it's easy to realize image
compression and to read image compression information.
hope the code below will help.
<code>
Dim Image As New RasterEdgeImaging()

Private Sub ImageCompression()
If True Then
ImageCompression.infile("C:1.tif")
ImageCompression.Outfile("C:2.tif")
ImageEncoder = ImageEncoder.Group3Encoding
End If
End Sub
Image.ImageCompression(@"C:1.tif", "C:2.tif", ImageEncoder
ImageEncoder.Group3Encoding)
</code>
for more information, you may visit this page for detailed information about
Tiff image compression
http://www.rasteredge.com/how-to/vb-net-imaging/image-compressing