77 lines
5.2 KiB
HTML
77 lines
5.2 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>Extending LibTiff library with support for the new BigTIFF format</title>
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<meta http-equiv="content-language" content="en">
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<body lang="en" text="#000000" bgcolor="#ffffff" link="#0000ff" alink="#0000ff" vlink="#0000ff">
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<h1>Extending LibTiff library with support for the new BigTIFF format</h1>
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<p>
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<a href="http://www.simplesystems.org/libtiff//">LibTiff</a> maintainers have started work on LibTiff 4.0,
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the next major upgrade of the time-proven <a href="http://www.awaresystems.be/imaging/tiff.html">TIFF</a>
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codec. This upgrade will include support for the new BigTIFF file format. It is planned a preliminary
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version (LibTiff 4.0alpha1) will be operational by June 15, 2007. Testing and final release improvements
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for LibTiff 4.0 will be completed by July 30, 2007.
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</p>
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<p>
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BigTIFF logically extends the original TIFF file format (referred to as 'ClassicTIFF' from now on),
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breaking the 4 gigabyte boundary, with 64bit offsets allowing files up to 18,000 petabytes in size. The
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BigTIFF specification is the result of work by a variety of parties on the LibTiff mailing list, including
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the current LibTiff maintainers, Joris Van Damme and Adobe staff. The BigTIFF specification has not yet
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been officially approved by the TIFF specification owner (Adobe), but implementation within LibTiff
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could accelerate that process. For more information on the BigTIFF file format, we recommend AWare Systems'
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<a href="http://www.awaresystems.be/imaging/tiff/bigtiff.html">BigTIFF page</a>.
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</p>
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<p>
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BigTIFF will be especially useful for people and vendors that are confronted with very large images, and
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still seek to use an open, simple, and extendable format. This requirement is frequently encountered in the
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geospatial field, but also concerns large format scanners, medical imaging and other fields.
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</p>
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<p>
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The LibTiff BigTIFF upgrade is made possible by four sponsors funding the project. The programming work will
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primarily be done by <a href="http://www.awaresystems.be/index.html">Joris Van Damme (AWare Systems)</a>.
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LibTiff's licensing agreement will remain unchanged. More details on the project itself, are available from
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the <a href="http://www.simplesystems.org/libtiff//BigTIFFProposal.html">BigTIFF in LibTiff project page</a>.
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</p>
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<p>
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The sponsors are, in alphabetical order:
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</p>
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<table cellspacing="4" cellpadding="4" border="0">
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<tbody>
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<tr>
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<td><img src="bigtiffpr_images/esri.png" width="128" height="78" alt="ESRI" border="0"></td>
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<td><a href="http://www.esri.com/">ESRI</a> has been giving customers around the world the power to
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think and plan geographically since 1969. As the leader in GIS, ESRI applies innovative technologies to help
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organizations create, analyze, and visualize information for more informed decisions. Running on more than
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a million desktops and thousands of servers, ESRI applications are the foundation of the world's mapping and
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spatial analysis infrastructure.</td>
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</tr>
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<tr>
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<td><img src="bigtiffpr_images/leica.png" width="128" height="85" alt="Leica Geosystems Geospatial Imaging" border="0"></td>
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<td><a href="http://gi.leica-geosystems.com/default.aspx">Leica Geosystems Geospatial Imaging</a> offers a
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range of workflow solutions for photogrammetry, mapping, remote sensing, catalog management and exploitation
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of geospatial imagery. Enterprise organizations use this imagery as the basis for generating information for
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both education and decision making processes. Those who use Leica Geosystems products every day trust them
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for their precision, seamless integration, interoperability and superior customer support.</td>
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</tr>
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<tr>
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<td><img src="bigtiffpr_images/safe.png" width="128" height="53" alt="Safe Software" border="0"></td>
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<td><a href="http://www.safe.com/">Safe Software</a> is the maker of FME, a powerful spatial ETL (Extract,
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Transform and Load) tool that enables true data interoperability. FME manages the translation,
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transformation, integration and web-based distribution of geospatial data in 200 GIS, CAD, raster and
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database formats. Safe Software's FME technology is also embedded in numerous market-leading GIS and
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ETL applications.</td>
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</tr>
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<tr>
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<td><img src="bigtiffpr_images/weogeo.png" width="128" height="37" alt="WeoGeo" border="0"></td>
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<td><a href="http://www.weogeo.com/">WeoGeo</a> is a web-based data management resource for the geospatial
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industry that allows the free market exchange of mapping related imagery products, featuring an innovative
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solution that efficiently manages digital mapping files of any size. With an intuitive user interface
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and the scalable power of Amazon Web Services (AWS), geospatial professionals can view, sort, search,
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and share complex, high volume maps quickly and effectively.</td>
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</tr>
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</tbody>
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</table>
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</body>
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