THE WHATIS.COM WORD-OF-THE-DAY June 13, 2002 MrSID ______________ TODAY'S SPONSOR: The .tv Corporation
Save 30% on Web addresses! Not only will you get a great deal on your Web addresses, but you'll also get superior customer service, innovative products and services and a place that is easy to register and manage your Web addresses. Great names are still available. Register the names you want before someone else does! Check it out now: http://WhatIs.com/r/0,,3930,00.htm?the.tvcorporation ______________ TODAY'S WORD: MrSID See our definition with hyperlinks at http://searchstorage.techtarget.com/sDefinition/0,,sid5_gci832738,00.html MrSID (Multi-resolution Seamless Image Database) is an image compressor, viewer, and file format for extremely large raster graphic images. MrSID, created by LizardTech, works by putting together hundreds of small image tiles into one large seamless image that can be compressed and decompressed with little or no degradation. One problem previously associated with raster images was the long amount of time it took to open very large files. The creators of MrSID overcame that problem by giving the user the ability to decompress just the portion of the image they want to view. The user can move from one part of the image to another quickly without having to wait for the entire image to decompress. Another problem associated with massive raster images was the large amount of storage space they required. MrSID uses a patented "wavelet" technology first developed at the National Research Laboratories at Los Alamos to achieve a compression ratio of 20:1 for greyscale images and 50:1 for full color images. Now, a satellite photo from space that once required the storage space of forty CD-ROMs, could be compressed with MrSID and stored on one CD-ROM. The wavelet technology used by MrSID relies on advanced mathematical algorithms both to compress an image and build the viewer. Since the image remains geometrically accurate after compression, it can be geo-referenced before compression or overlaid with other referencing data. Because MrSID (.sid) files are a binary MIME type, they can be served over the Internet. MrSID is used in photography, mapping/GIS, document management, medical imaging, and games. RELATED TERMS: raster graphics http://whatis.techtarget.com/definition/0,,sid9_gci212871,00.html compressed http://searchstorage.techtarget.com/sDefinition/0,,sid5_gci211828,00.html satellite http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci212939,00.html CD-ROM http://whatis.techtarget.com/definition/0,,sid9_gci211759,00.html algorithm http://searchvb.techtarget.com/sDefinition/0,,sid8_gci211545,00.html GIS http://searchdatabase.techtarget.com/sDefinition/0,,sid13_gci213982,00.html ______________________ SELECTED LINKS: More information about MrSID can be found at the LizardTech Web site. http://www.lizardtech.com/products/mrsidgeo.php Geocover provides sample images created with MrSID. http://www.geocover.com/mrsid/sample/ ______________________ WHATIS DISCUSSION FORUM | Challenge #3: The haunted laptop Paul's home computer seemed to be haunted. Mysterious things were happening that Paul couldn't explain. Applications ran and quit on their own. Files renamed themselves and moved around. Documents were disappearing. Is there a ghost? Or could it be something even more scary? You be the judge! http://whatis.discussions.techtarget.com/WebX?[EMAIL PROTECTED]^7@.1dcf9e64/80!viewtype=threadDate&skip=&expand= ______________________ QUIZ #27 | Security awareness for end users Studies show that a company's biggest security threat is its own employees. The SANS Institute recommends that organizations should take time to educate their employees about computer security and periodically test employees to make sure they understand the basics. To help you in your efforts to raise security awareness in your organization, we've created the following quiz: http://searchsecurity.techtarget.com/sDefinition/0,,sid14_gci826572,00.html _________________________________________________________ LESS THAN 2 WEEKS UNTIL OUR FREE SECURITY DECISIONS EVENT Time's running out to attend Security Decisions June 19-21 at the Hilton Chicago Hotel. There are still seats left but you should act now or risk being shut out. FREE attendance available at: http://www.securityconf.com/html/registration.htm Benefit from top strategies to make the most cost-effective security purchases, expert tactics to close specific security holes in your system, and the most effective ways to manage network security (without breaking the bank). Apply today! ______________________________ RECENT ADDITIONS AND UPDATES [1] subset symbol http://whatis.techtarget.com/definition/0,,sid9_gci831748,00.html [2] gap analysis http://whatis.techtarget.com/definition/0,,sid9_gci831294,00.html [3] XSD http://searchwebservices.techtarget.com/sDefinition/0,,sid26_gci831325,00.html [4] PersonalJava http://searchsolaris.techtarget.com/sDefinition/0,,sid12_gci831420,00.html [5] Resilient Packet Ring http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci754865,00.html ____________________________________________________________________ ::::::::::::::::::: WHATIS.COM CONTACTS ::::::::::::::::::: LOWELL THING, Site Editor ([EMAIL PROTECTED]) ____________________________________________________________________ MARGARET ROUSE, Assistant Editor ([EMAIL PROTECTED]) ___________________________________________________________________ :::::::::::::::::::: ABOUT THIS NEWSLETTER ::::::::::::::::::::: Created by TechTarget (http://www.techtarget.com) TechTarget - The Most Targeted IT Media Copyright 2002, All Rights Reserved. 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