Re: Wavelet Compression & Digital Networks

From: Colin C. Venters (c.venters@mcc.ac.uk)
Date: Mon Apr 10 2000 - 02:26:50 CDT

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    Message-Id: <200004100737.AAA20094@dns.ccit.arizona.edu>
Date:         Mon, 10 Apr 2000 08:26:50 +0100
From: "Colin C. Venters" <mailto:c.venters@mcc.ac.uk>
Subject:      Re: Wavelet Compression & Digital Networks
To: mailto:IMAGELIB@LISTSERV.ARIZONA.EDU

    <pre> Have you checked out ECW (Enhanced Compressed Wavelets) by ER Mapper www.ermapper.com. Very, very impressive! We are using this in our Landmap project, www.landmap.ac.uk Here are some rough figures based on an
    'independent report' which compared the two technology's: Mr SID processed a 589.7MB in 23m41s which gives a throughput of 24.9MB per minute. The target output ratio of 20:1 and achieved an overall compression rate of 16.8:1 as an average for all images. In contrast, ECW processed a 589.7MB in 10m25s which gives a throughput of 56.6MB per minute. The target output ratio was 20:1 for all images and achieved an overall compression rate of 9.8:1 for all images. The full report can be read online at www.directionsmag.com

    Kind regards Colin

    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Colin C. Venters Manchester Visualization Centre Manchester Computing University of Manchester Oxford Road MANCHESTER England, UK M13 9PL Tel: +44-161-275-6046 Fax: +44-161-275-6800 URL: www.man.ac.uk/MVC/staff/venters
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

    </pre>

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