Large color tifs

Questions, comments and suggestions concerning VintaSoft Twain .NET SDK.

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ddrew_bolt
Posts: 3
Joined: Wed Oct 12, 2011 9:38 pm

Large color tifs

Post by ddrew_bolt » Fri Jun 29, 2012 9:01 pm

Hello,

I am seeing very large file sizes when saving color images to a multipage tif using anything other than JPG compression.
Example..
2 pages scanned Letter size, color, 300 dpi =

48MB (no compression)
34MB (LZW)
30MB (Zip)
2.8MB (JPG)

I've tried scanning with a Kodak 1220 and a Panasonic 2026 with similar results. Scanned and saved the files using the "TwainAdvancedDemo" app that came with the latest VintaSoftTwain.NET release (ver 8.2).

The problem with JPG compression is at least on XP stations, the images can't be viewed using the native Windows image viewer, which they need to be.
Any tips on getting the file size down using the other compression types?
Thank you for your time and any assistance anyone can provide,
-Derek Drew
BOLT Document Management

Alex
Site Admin
Posts: 1445
Joined: Thu Jul 10, 2008 2:21 pm

Re: Large color tifs

Post by Alex » Mon Jul 02, 2012 6:40 pm

Hello,
The problem with JPG compression is at least on XP stations, the images can't be viewed using the native Windows image viewer, which they need to be.
Windows XP and earlier do not support TIFF files with JPEG and ZIP compressions, it's a known issue.

I am seeing very large file sizes when saving color images to a multipage tif using anything other than JPG compression.
Size of image depends from the content of image. Please try to save image using another applications, for example, Irfan Viewer, Adobe Photoshop, and compare sizes.

Best regards, Alexander

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