<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>Hello,</div><div><br></div><div>I think all we need is to upgrade to the latest libtiff, unless we want to deal with geo meta data.</div><div><br></div>From <a href="http://en.wikipedia.org/wiki/Tagged_Image_File_Format:">http://en.wikipedia.org/wiki/Tagged_Image_File_Format:</a><div><br></div><div><span class="Apple-style-span" style="font-family: sans-serif; font-size: 13px; line-height: 19px; ">A classic TIFF file format uses 32-bit offsets and, as such, file size is limited to 4 <a href="http://en.wikipedia.org/wiki/Gibibyte" title="Gibibyte" style="text-decoration: none; color: rgb(6, 69, 173); background-image: none; background-repeat: initial; background-attachment: initial; -webkit-background-clip: initial; -webkit-background-origin: initial; background-color: initial; background-position: initial initial; ">GiB</a> (4,294,967,296 bytes). BigTIFF is a TIFF variant file format, which can contain more than 4GiB of data by using 64-bit offsets.<sup id="cite_ref-9" class="reference" style="line-height: 1em; font-weight: normal; font-style: normal; "><a href="http://en.wikipedia.org/wiki/Tagged_Image_File_Format#cite_note-9" style="text-decoration: none; color: rgb(6, 69, 173); background-image: none; background-repeat: initial; background-attachment: initial; -webkit-background-clip: initial; -webkit-background-origin: initial; background-color: initial; white-space: nowrap; background-position: initial initial; "><span>[</span>10<span>]</span></a></sup> Support for BigTIFF file formats among applications is limited since the file format specification was only recently implemented (2007) in <a href="http://en.wikipedia.org/wiki/LibTIFF" title="LibTIFF" class="mw-redirect" style="text-decoration: none; color: rgb(6, 69, 173); background-image: none; background-repeat: initial; background-attachment: initial; -webkit-background-clip: initial; -webkit-background-origin: initial; background-color: initial; background-position: initial initial; ">LibTIFF</a> version 4.0, which is currently in <a href="http://en.wikipedia.org/wiki/Software_release_life_cycle#Beta" title="Software release life cycle" style="text-decoration: none; color: rgb(6, 69, 173); background-image: none; background-repeat: initial; background-attachment: initial; -webkit-background-clip: initial; -webkit-background-origin: initial; background-color: initial; background-position: initial initial; ">beta</a> development.</span></div><div><font class="Apple-style-span" face="sans-serif" size="3"><span class="Apple-style-span" style="font-size: 13px; line-height: 19px;"><br></span></font></div><div><font class="Apple-style-span" face="sans-serif" size="3"><span class="Apple-style-span" style="font-size: 13px; line-height: 19px;">From <a href="http://en.wikipedia.org/wiki/GeoTIFF:">http://en.wikipedia.org/wiki/GeoTIFF:</a></span></font></div><div><font class="Apple-style-span" face="sans-serif" size="3"><span class="Apple-style-span" style="font-size: 13px; line-height: 19px;"><br></span></font></div><div><font class="Apple-style-span" face="sans-serif" size="3"><span class="Apple-style-span" style="font-size: 13px; line-height: 19px;"><b>GeoTIFF</b> is a <a href="http://en.wikipedia.org/wiki/Public_domain" title="Public domain" style="text-decoration: none; color: rgb(6, 69, 173); background-image: none; background-repeat: initial; background-attachment: initial; -webkit-background-clip: initial; -webkit-background-origin: initial; background-color: initial; background-position: initial initial; ">public domain</a> <a href="http://en.wikipedia.org/wiki/Metadata_(computing)" title="Metadata (computing)" class="mw-redirect" style="text-decoration: none; color: rgb(6, 69, 173); background-image: none; background-repeat: initial; background-attachment: initial; -webkit-background-clip: initial; -webkit-background-origin: initial; background-color: initial; background-position: initial initial; ">metadata</a> standard which allows <a href="http://en.wikipedia.org/wiki/Georeference" title="Georeference" style="text-decoration: none; color: rgb(6, 69, 173); background-image: none; background-repeat: initial; background-attachment: initial; -webkit-background-clip: initial; -webkit-background-origin: initial; background-color: initial; background-position: initial initial; ">georeferencing</a> information to be embedded within a <a href="http://en.wikipedia.org/wiki/TIFF" title="TIFF" class="mw-redirect" style="text-decoration: none; color: rgb(6, 69, 173); background-image: none; background-repeat: initial; background-attachment: initial; -webkit-background-clip: initial; -webkit-background-origin: initial; background-color: initial; background-position: initial initial; ">TIFF</a> file. The potential additional information includes <a href="http://en.wikipedia.org/wiki/Map_projection" title="Map projection" style="text-decoration: none; color: rgb(6, 69, 173); background-image: none; background-repeat: initial; background-attachment: initial; -webkit-background-clip: initial; -webkit-background-origin: initial; background-color: initial; background-position: initial initial; ">map projection</a>, <a href="http://en.wikipedia.org/wiki/Coordinate_system" title="Coordinate system" style="text-decoration: none; color: rgb(6, 69, 173); background-image: none; background-repeat: initial; background-attachment: initial; -webkit-background-clip: initial; -webkit-background-origin: initial; background-color: initial; background-position: initial initial; ">coordinate systems</a>, <a href="http://en.wikipedia.org/wiki/Ellipsoid" title="Ellipsoid" style="text-decoration: none; color: rgb(6, 69, 173); background-image: none; background-repeat: initial; background-attachment: initial; -webkit-background-clip: initial; -webkit-background-origin: initial; background-color: initial; background-position: initial initial; ">ellipsoids</a>, <a href="http://en.wikipedia.org/wiki/Datum_(geodesy)" title="Datum (geodesy)" style="text-decoration: none; color: rgb(6, 69, 173); background-image: none; background-repeat: initial; background-attachment: initial; -webkit-background-clip: initial; -webkit-background-origin: initial; background-color: initial; background-position: initial initial; ">datums</a>, and everything else necessary to establish the exact spatial reference for the file. The GeoTIFF format is fully compliant with TIFF 6.0, so software incapable of reading and interpreting the specialized metadata will still be able to open a GeoTIFF format file.<sup id="cite_ref-0" class="reference" style="line-height: 1em; font-weight: normal; font-style: normal; "><span><a href="http://en.wikipedia.org/wiki/GeoTIFF#cite_note-0" style="text-decoration: none; color: rgb(6, 69, 173); background-image: none; background-repeat: initial; background-attachment: initial; -webkit-background-clip: initial; -webkit-background-origin: initial; background-color: initial; white-space: nowrap; background-position: initial initial; ">[</a></span><a href="http://en.wikipedia.org/wiki/GeoTIFF#cite_note-0" style="text-decoration: none; color: rgb(6, 69, 173); background-image: none; background-repeat: initial; background-attachment: initial; -webkit-background-clip: initial; -webkit-background-origin: initial; background-color: initial; white-space: nowrap; background-position: initial initial; ">1</a><span><a href="http://en.wikipedia.org/wiki/GeoTIFF#cite_note-0" style="text-decoration: none; color: rgb(6, 69, 173); background-image: none; background-repeat: initial; background-attachment: initial; -webkit-background-clip: initial; -webkit-background-origin: initial; background-color: initial; white-space: nowrap; background-position: initial initial; ">]</a></span></sup></span></font></div><div><font class="Apple-style-span" face="sans-serif" size="3"><span class="Apple-style-span" style="font-size: 11px; line-height: 10px;"><br></span></font></div><div><br></div><div><br></div><div>The current version of TIFF we have is 3.7.2. So it may be a matter of upgrading the library, and making sure we use the right types, and add streaming support to the tiff ImageIO too.</div><div><br></div><div>Brad</div><div><br></div><div><br></div><div><br></div><div><br></div><div>On Jun 17, 2010, at 10:39 AM, Luis Ibanez wrote:</div><div><div><br class="Apple-interchange-newline"><blockquote type="cite"><br>Should we create a GDALImageIO class ?<br><br>Or is it the GeoTiff library what we should add support for ?<br><br> <a href="http://trac.osgeo.org/geotiff/">http://trac.osgeo.org/geotiff/</a><br><br><br>We have some ongoing effort on adding<br>
JPEG2000ImageIO and HDF5ImageIO<br><br><a href="http://www.na-mic.org/Wiki/index.php/JPEG2000_and_HDF5_Image_Readers_in_ITK">http://www.na-mic.org/Wiki/index.php/JPEG2000_and_HDF5_Image_Readers_in_ITK</a><br><br><a href="http://www.itk.org/Wiki/Proposals:JPEG_2000_ImageIO">http://www.itk.org/Wiki/Proposals:JPEG_2000_ImageIO</a><br>
<br>This may be a consistent effort along the same direction.<br><br><br> Luis<br><br><br>-------------------------------------------------------------------------<br><div class="gmail_quote">On Wed, Jun 16, 2010 at 5:46 PM, Conrad Bielski <span dir="ltr"><<a href="mailto:conrad_bielski@yahoo.com">conrad_bielski@yahoo.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hi,<br>
another option is to use the Orfeo Toolbox which is compatible with both ITK and GDAL already: <a href="http://www.orfeo-toolbox.org/" target="_blank">http://www.orfeo-toolbox.org</a> .<br>
Good luck!<br>
<font color="#888888">Conrad :)<br>
</font><div><div></div><div class="h5"><br>
<br>
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<span><ATT00001..txt></span></blockquote></div><br><div>
<span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><p style="margin: 0.0px 0.0px 0.0px 0.0px"><font face="Helvetica" size="3" style="font: 12.0px Helvetica">========================================================</font></p><p style="margin: 0.0px 0.0px 0.0px 0.0px"><font face="Helvetica" size="3" style="font: 12.0px Helvetica">Bradley Lowekamp<span class="Apple-converted-space"> </span><span class="Apple-converted-space"> </span></font></p><p style="margin: 0.0px 0.0px 0.0px 0.0px"><font class="Apple-style-span" face="Arial"><span class="Apple-style-span" style="font-family: Arial; "><span class="Apple-style-span" style="font-family: Arial; ">Lockheed Martin </span></span></font><font face="Helvetica" size="3" style="font: 12.0px Helvetica">Contractor for</font></p><p style="margin: 0.0px 0.0px 0.0px 0.0px"><font face="Helvetica" size="3" style="font: 12.0px Helvetica">Office of High Performance Computing and Communications</font></p><p style="margin: 0.0px 0.0px 0.0px 0.0px"><font face="Helvetica" size="3" style="font: 12.0px Helvetica">National Library of Medicine<span class="Apple-converted-space"> </span></font></p><p style="margin: 0.0px 0.0px 0.0px 0.0px"><font face="Helvetica" size="3" style="font: 12.0px Helvetica"><a href="mailto:blowekamp@mail.nih.gov">blowekamp@mail.nih.gov</a></font></p><br class="Apple-interchange-newline"></span></span>
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