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From: "Kemp Watson" <kemp@extelligence.net>
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Date: Tue, 3 Jul 2007 10:34:13 -0400
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Subject: [Tiff] Re: Big TIFF Compression
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Status:   

Andy:

>>I'm interested in hearing real examples as to why BigTIFF is useful for
>>georeferencing and medical imaging. Are the images really that big? After
>>compression or only without? Are they big 'cause they are multi-channel, or
>>multi-page, or uncompressed, or, ...?

Yes, some images are that big. Our medical images for virtual microscopy are anywhere from 50,000 pixels on a side, up
to 900,000 pixels on a side, for current file sizes up to around 770,000 megapixels, or 2.2 TB raw. That's 3-component
RGB, 8-bit - we're moving to support 32-component, 16-bit, with ~16 layers, which will make the larger images over a
petabyte each, uncompressed.

Take a peek at our website, below, for a few samples if you like.

W. Kemp Watson, CEO
Objective Pathology Services Ltd
Toronto, Ontario  (905) 770-7802
http://www.objectivepathology.ca

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