2005-12-27 20:52:03 -05:00
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html lang="en">
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<title>TIFF 6.0 Specification Coverage</title>
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<table border="0" cellspacing="0" cellpadding="0">
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<td style="padding-left: 1em; padding-right: 1em"><img src="images/strike.gif" width="128" height="100"></td>
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<td>
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<h1>TIFF 6.0 Specification Coverage</h1>
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2005-12-27 22:09:59 -05:00
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<p>
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2005-12-27 20:52:03 -05:00
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The library is capable of dealing with images that are written to
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follow the 5.0 or 6.0 TIFF spec. There is also considerable support
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for some of the more esoteric portions of the 6.0 TIFF spec.
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</p>
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</td>
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</tr>
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</table>
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<br>
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2005-12-27 22:09:59 -05:00
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<table border="1" cellspacing="0" cellpadding="5">
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<tr>
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<th>Core requirements</th>
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<td>
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<p>
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Both <tt>"MM"</tt> and <tt>"II"</tt> byte orders are handled.
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Both packed and separated planar configuration of samples.
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Any number of samples per pixel (memory permitting).
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Any image width and height (memory permitting).
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Multiple subfiles can be read and written.
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Editing is <b>not</b> supported in that related subfiles (e.g.
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a reduced resolution version of an image) are not automatically
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updated.
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</p>
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<p>
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Tags handled: <tt>ExtraSamples</tt>, <tt>ImageWidth</tt>,
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<tt>ImageLength</tt>, <tt>NewSubfileType</tt>, <tt>ResolutionUnit</tt>.
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<tt>Rowsperstrip</tt>, <tt>StripOffsets</tt>, <tt>StripByteCounts</tt>,
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<tt>XResolution</tt>, <tt>YResolution</tt>
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</p>
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</td>
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</tr>
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<tr>
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<th>Tiled Images</th>
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<td><tt>TileWidth</tt>, <tt>TileLength</tt>, <tt>TileOffsets</tt>,
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<tt>TileByteCounts</tt></td>
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</tr>
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<tr>
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<th>Image Colorimetry Information</th>
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<td><tt>WhitePoint</tt>, <tt>PrimaryChromaticities</tt>, <tt>TransferFunction</tt>,
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<tt>ReferenceBlackWhite</tt></td>
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</tr>
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<tr>
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<th>Class B for bilevel images</th>
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<td><tt>SamplesPerPixel</tt> = 1<br>
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<tt>BitsPerSample</tt> = 1<br>
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<tt>Compression</tt> = 1 (none), 2 (CCITT 1D), or 32773 (PackBits)<br>
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<tt>PhotometricInterpretation</tt> = 0 (Min-is-White), 1 (Min-is-Black)</td>
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</tr>
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<tr>
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<th>Class G for grayscale images</th>
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<td><tt>SamplesPerPixel</tt> = 1<br>
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<tt>BitsPerSample</tt> = 4, 8<br>
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<tt>Compression</tt> = 1 (none) 5 (LZW)<br>
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<tt>PhotometricInterpretation</tt> = 0 (Min-is-White), 1 (Min-is-Black)</td>
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</tr>
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<tr>
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<th>Class P for palette color images</th>
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<td><tt>SamplesPerPixel</tt> = 1<br>
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<tt>BitsPerSample</tt> = 1-8<br>
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<tt>Compression</tt> = 1 (none) 5 (LZW)<br>
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<tt>PhotometricInterpretation</tt> = 3 (Palette RGB)<br>
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<tt>ColorMap</tt></td>
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</tr>
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<tr>
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<th>Class R for RGB full color images</th>
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<td><tt>SamplesPerPixel</tt> = 3<br>
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<tt>BitsPerSample</tt> = <8,8,8><br>
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<tt>PlanarConfiguration</tt> = 1, 2<br>
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<tt>Compression</tt> = 1 (none) 5 (LZW)<br>
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<tt>PhotometricInterpretation</tt> = 2 (RGB)</td>
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</tr>
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<tr>
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<th>Class F for facsimile</th>
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<td>(<i>Class B tags plus...</i>)<br>
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<tt>Compression</tt> = 3 (CCITT Group 3), 4 (CCITT Group 4)<br>
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<tt>FillOrder</tt> = 1 (MSB), 2 (LSB)<br>
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<tt>Group3Options</tt> = 1 (2d encoding), 4 (zero fill), 5 (2d+fill)<br>
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<tt>ImageWidth</tt> = 1728, 2048, 2482<br>
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<tt>NewSubFileType</tt> = 2<br>
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<tt>ResolutionUnit</tt> = 2 (Inch), 3 (Centimeter)<br>
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<tt>PageNumber</tt>,
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<tt>XResolution</tt>,
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<tt>YResolution</tt>,
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<tt>Software</tt>,
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<tt>BadFaxLines</tt>,
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<tt>CleanFaxData</tt>,
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<tt>ConsecutiveBadFaxLines</tt>,
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<tt>DateTime</tt>,
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<tt>DocumentName</tt>,
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<tt>ImageDescription</tt>,
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<tt>Orientation</tt></td>
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</tr>
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<tr>
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<th>Class S for separated images</th>
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<td><tt>SamplesPerPixel</tt> = 4<br>
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<tt>PlanarConfiguration</tt> = 1, 2<br>
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<tt>Compression</tt> = 1 (none), 5 (LZW)<br>
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<tt>PhotometricInterpretation</tt> = 5 (Separated)<br>
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<tt>InkSet</tt> = 1 (CMYK)<br>
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<tt>DotRange</tt>,
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<tt>InkNames</tt>,
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<tt>DotRange</tt>,
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<tt>TargetPrinter</tt></td>
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</tr>
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<tr>
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<th>Class Y for YCbCr images</th>
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<td><tt>SamplesPerPixel</tt> = 3<br>
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<tt>BitsPerSample</tt> = <8,8,8><br>
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<tt>PlanarConfiguration</tt> = 1, 2<br>
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<tt>Compression</tt> = 1 (none), 5 (LZW), 7 (JPEG)<br>
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<tt>PhotometricInterpretation</tt> = 6 (YCbCr)<br>
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<tt>YCbCrCoefficients</tt>,
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<tt>YCbCrSubsampling</tt>,
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<tt>YCbCrPositioning</tt><br>
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(<i>colorimetry info from Appendix H; see above</i>)</td>
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</tr>
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<tr>
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<th>Class "JPEG" for JPEG images (per TTN2)</th>
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<td><tt>PhotometricInterpretation</tt> = 1 (grayscale), 2 (RGB), 5 (CMYK), 6 (YCbCr)<br>
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(<i>Class Y tags if YCbCr</i>)<br>
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(<i>Class S tags if CMYK</i>)<br>
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<tt>Compression</tt> = 7 (JPEG)</td>
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</tr>
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</table>
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<p>
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In addition, the library supports some optional compression algorithms
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that are, in some cases, of dubious value.
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</p>
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<table border="0" cellspacing="0" cellpadding="2">
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2005-12-27 20:52:03 -05:00
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<tr><th>Compression tag value</th><th>Compression algorithm</th></tr>
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<tr><td>32766</td><td>NeXT 2-bit encoding</td></tr>
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<tr><td>32809</td><td>ThunderScan 4-bit encoding</td></tr>
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<tr><td>32909</td><td>Pixar companded 11-bit ZIP encoding</td></tr>
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<tr><td>32946</td><td>PKZIP-style Deflate encoding (experimental)</td></tr>
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<tr><td>34676</td><td>SGI 32-bit Log Luminance encoding (experimental)</td></tr>
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<tr><td>34677</td><td>SGI 24-bit Log Luminance encoding (experimental)</td></tr>
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</table>
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<br>
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<p>
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2005-12-27 22:09:59 -05:00
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Note that there is no support for the JPEG-related tags defined
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in the 6.0 specification; the JPEG support is based on the post-6.0
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proposal given in TIFF Technical Note #2.
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</p>
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<table>
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<tr>
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<td valign=top><img src="images/info.gif"></td>
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<td>For more information on the experimental Log Luminance encoding
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consult the materials available at
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<a href="http://www.anyhere.com/gward/pixformat/tiffluv.html">http://www.anyhere.com/gward/pixformat/tiffluv.html</a>.</td>
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</tr>
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</table>
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<br>
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<p>
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The following table shows the tags that are recognized
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and how they are used by the library. If no use is indicated,
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then the library reads and writes the tag, but does not use it internally.
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</p>
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<table border="1" cellspacing="0" cellpadding="5">
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<tr>
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<th>Tag Name</th>
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<th>Value</th>
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<th>R/W</th>
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<th>Library's Use (Comments)</th>
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</tr>
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<tr>
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<td><tt>NewSubFileType</tt></td>
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<td>254</td>
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<td>R/W</td>
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<td>none (called <tt>SubFileType</tt> in <tiff.h>)</td>
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</tr>
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<tr>
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<td><tt>SubFileType</tt></td>
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<td>255</td>
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<td>R/W</td>
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<td>none (called <tt>OSubFileType</tt> in <tiff.h>)</td>
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</tr>
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<tr>
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<td><tt>ImageWidth</tt></td>
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<td>256</td>
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<td>R/W</td>
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<td>lots</td>
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</tr>
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<tr>
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<td><tt>ImageLength</tt></td>
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<td>257</td>
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<td>R/W</td>
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<td>lots</td>
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</tr>
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<tr>
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<td><tt>BitsPerSample</tt></td>
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<td>258</td>
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<td>R/W</td>
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<td>lots</td>
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</tr>
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<tr>
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<td><tt>Compression</tt></td>
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<td>259</td>
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<td>R/W</td>
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<td>to select appropriate codec</td>
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</tr>
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<tr>
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<td><tt>PhotometricInterpretation</tt></td>
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<td>262</td>
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<td>R/W</td>
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<td>lots</td>
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</tr>
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<tr>
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<td><tt>Thresholding</tt></td>
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<td>263</td>
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<td>R/W</td>
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<td> </td>
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</tr>
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<tr>
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<td><tt>CellWidth</tt></td>
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<td>264</td>
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<td> </td>
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<td>parsed but ignored</td>
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</tr>
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<tr>
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<td><tt>CellLength</tt></td>
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<td>265</td>
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<td> </td>
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<td>parsed but ignored</td>
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</tr>
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<tr>
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<td><tt>FillOrder</tt></td>
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<td>266</td>
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<td>R/W</td>
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<td>control bit order</td>
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</tr>
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<tr>
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<td><tt>DocumentName</tt></td>
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<td>269</td>
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<td>R/W</td>
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<td> </td>
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</tr>
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<tr>
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<td><tt>ImageDescription</tt></td>
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<td>270</td>
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<td>R/W</td>
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<td> </td>
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</tr>
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<tr>
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<td><tt>Make</tt></td>
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<td>271</td>
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<td>R/W</td>
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<td> </td>
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</tr>
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<tr>
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<td><tt>Model</tt></td>
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<td>272</td>
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<td>R/W</td>
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<td> </td>
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</tr>
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<tr>
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<td><tt>StripOffsets</tt></td>
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<td>273</td>
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<td>R/W</td>
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<td>data i/o</td>
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</tr>
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<tr>
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<td><tt>Orientation</tt></td>
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<td>274</td>
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<td>R/W</td>
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<td> </td>
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</tr>
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<tr>
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<td><tt>SamplesPerPixel</tt></td>
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<td>277</td>
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<td>R/W</td>
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<td>lots</td>
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</tr>
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<tr>
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<td><tt>RowsPerStrip</tt></td>
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<td>278</td>
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<td>R/W</td>
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<td>data i/o</td>
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</tr>
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2005-12-27 20:52:03 -05:00
|
|
|
<tr>
|
|
|
|
|
<td><tt>StripByteCounts</tt></td>
|
|
|
|
|
<td>279</td>
|
|
|
|
|
<td>R/W</td>
|
2005-12-27 22:09:59 -05:00
|
|
|
<td>data i/o</td>
|
2005-12-27 20:52:03 -05:00
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>MinSampleValue</tt></td>
|
|
|
|
|
<td>280</td>
|
|
|
|
|
<td>R/W</td>
|
|
|
|
|
<td> </td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>MaxSampleValue</tt></td>
|
|
|
|
|
<td>281</td>
|
|
|
|
|
<td>R/W</td>
|
|
|
|
|
<td> </td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>XResolution</tt></td>
|
|
|
|
|
<td>282</td>
|
|
|
|
|
<td>R/W</td>
|
|
|
|
|
<td> </td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>YResolution</tt></td>
|
|
|
|
|
<td>283</td>
|
|
|
|
|
<td>R/W</td>
|
2005-12-27 22:09:59 -05:00
|
|
|
<td>used by Group 3 2d encoder</td>
|
2005-12-27 20:52:03 -05:00
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>PlanarConfiguration</tt></td>
|
|
|
|
|
<td>284</td>
|
|
|
|
|
<td>R/W</td>
|
2005-12-27 22:09:59 -05:00
|
|
|
<td>data i/o</td>
|
2005-12-27 20:52:03 -05:00
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>PageName</tt></td>
|
|
|
|
|
<td>285</td>
|
|
|
|
|
<td>R/W</td>
|
|
|
|
|
<td> </td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>XPosition</tt></td>
|
|
|
|
|
<td>286</td>
|
|
|
|
|
<td>R/W</td>
|
|
|
|
|
<td> </td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>YPosition</tt></td>
|
|
|
|
|
<td>286</td>
|
|
|
|
|
<td>R/W</td>
|
|
|
|
|
<td> </td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>FreeOffsets</tt></td>
|
|
|
|
|
<td>288</td>
|
|
|
|
|
<td> </td>
|
2005-12-27 22:09:59 -05:00
|
|
|
<td>parsed but ignored</td>
|
2005-12-27 20:52:03 -05:00
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>FreeByteCounts</tt></td>
|
|
|
|
|
<td>289</td>
|
|
|
|
|
<td> </td>
|
2005-12-27 22:09:59 -05:00
|
|
|
<td>parsed but ignored</td>
|
2005-12-27 20:52:03 -05:00
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>GrayResponseUnit</tt></td>
|
|
|
|
|
<td>290</td>
|
|
|
|
|
<td> </td>
|
2005-12-27 22:09:59 -05:00
|
|
|
<td>parsed but ignored</td>
|
2005-12-27 20:52:03 -05:00
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>GrayResponseCurve</tt></td>
|
|
|
|
|
<td>291</td>
|
|
|
|
|
<td> </td>
|
2005-12-27 22:09:59 -05:00
|
|
|
<td>parsed but ignored</td>
|
2005-12-27 20:52:03 -05:00
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>Group3Options</tt></td>
|
|
|
|
|
<td>292</td>
|
|
|
|
|
<td>R/W</td>
|
2005-12-27 22:09:59 -05:00
|
|
|
<td>used by Group 3 codec</td>
|
2005-12-27 20:52:03 -05:00
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>Group4Options</tt></td>
|
|
|
|
|
<td>293</td>
|
|
|
|
|
<td>R/W</td>
|
|
|
|
|
<td> </td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>ResolutionUnit</tt></td>
|
|
|
|
|
<td>296</td>
|
|
|
|
|
<td>R/W</td>
|
2005-12-27 22:09:59 -05:00
|
|
|
<td>used by Group 3 2d encoder</td>
|
2005-12-27 20:52:03 -05:00
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>PageNumber</tt></td>
|
|
|
|
|
<td>297</td>
|
|
|
|
|
<td>R/W</td>
|
|
|
|
|
<td> </td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>ColorResponseUnit</tt></td>
|
|
|
|
|
<td>300</td>
|
|
|
|
|
<td> </td>
|
2005-12-27 22:09:59 -05:00
|
|
|
<td>parsed but ignored</td>
|
2005-12-27 20:52:03 -05:00
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>TransferFunction</tt></td>
|
|
|
|
|
<td>301</td>
|
|
|
|
|
<td>R/W</td>
|
|
|
|
|
<td> </td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>Software</tt></td>
|
|
|
|
|
<td>305</td>
|
|
|
|
|
<td>R/W</td>
|
|
|
|
|
<td> </td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>DateTime</tt></td>
|
|
|
|
|
<td>306</td>
|
|
|
|
|
<td>R/W</td>
|
|
|
|
|
<td> </td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>Artist</tt></td>
|
|
|
|
|
<td>315</td>
|
|
|
|
|
<td>R/W</td>
|
|
|
|
|
<td> </td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>HostComputer</tt></td>
|
|
|
|
|
<td>316</td>
|
|
|
|
|
<td>R/W</td>
|
|
|
|
|
<td> </td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>Predictor</tt></td>
|
|
|
|
|
<td>317</td>
|
|
|
|
|
<td>R/W</td>
|
2005-12-27 22:09:59 -05:00
|
|
|
<td>used by LZW codec</td>
|
2005-12-27 20:52:03 -05:00
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>WhitePoint</tt></td>
|
|
|
|
|
<td>318</td>
|
|
|
|
|
<td>R/W</td>
|
|
|
|
|
<td> </td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>PrimaryChromacities</tt></td>
|
|
|
|
|
<td>319</td>
|
|
|
|
|
<td>R/W</td>
|
|
|
|
|
<td> </td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>ColorMap</tt></td>
|
|
|
|
|
<td>320</td>
|
|
|
|
|
<td>R/W</td>
|
|
|
|
|
<td> </td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>TileWidth</tt></td>
|
|
|
|
|
<td>322</td>
|
|
|
|
|
<td>R/W</td>
|
2005-12-27 22:09:59 -05:00
|
|
|
<td>data i/o</td>
|
2005-12-27 20:52:03 -05:00
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>TileLength</tt></td>
|
|
|
|
|
<td>323</td>
|
|
|
|
|
<td>R/W</td>
|
2005-12-27 22:09:59 -05:00
|
|
|
<td>data i/o</td>
|
2005-12-27 20:52:03 -05:00
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>TileOffsets</tt></td>
|
|
|
|
|
<td>324</td>
|
|
|
|
|
<td>R/W</td>
|
2005-12-27 22:09:59 -05:00
|
|
|
<td>data i/o</td>
|
2005-12-27 20:52:03 -05:00
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>TileByteCounts</tt></td>
|
|
|
|
|
<td>324</td>
|
|
|
|
|
<td>R/W</td>
|
2005-12-27 22:09:59 -05:00
|
|
|
<td>data i/o</td>
|
2005-12-27 20:52:03 -05:00
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>BadFaxLines</tt></td>
|
|
|
|
|
<td>326</td>
|
|
|
|
|
<td>R/W</td>
|
|
|
|
|
<td> </td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>CleanFaxData</tt></td>
|
|
|
|
|
<td>327</td>
|
|
|
|
|
<td>R/W</td>
|
|
|
|
|
<td> </td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>ConsecutiveBadFaxLines</tt></td>
|
|
|
|
|
<td>328</td>
|
|
|
|
|
<td>R/W</td>
|
|
|
|
|
<td> </td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>SubIFD</tt></td>
|
|
|
|
|
<td>330</td>
|
|
|
|
|
<td>R/W</td>
|
2005-12-27 22:09:59 -05:00
|
|
|
<td>subimage descriptor support</td>
|
2005-12-27 20:52:03 -05:00
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>InkSet</tt></td>
|
|
|
|
|
<td>332</td>
|
|
|
|
|
<td>R/W</td>
|
|
|
|
|
<td> </td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>InkNames</tt></td>
|
|
|
|
|
<td>333</td>
|
|
|
|
|
<td>R/W</td>
|
|
|
|
|
<td> </td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>DotRange</tt></td>
|
|
|
|
|
<td>336</td>
|
|
|
|
|
<td>R/W</td>
|
|
|
|
|
<td> </td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>TargetPrinter</tt></td>
|
|
|
|
|
<td>337</td>
|
|
|
|
|
<td>R/W</td>
|
|
|
|
|
<td> </td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>ExtraSamples</tt></td>
|
|
|
|
|
<td>338</td>
|
|
|
|
|
<td>R/W</td>
|
2005-12-27 22:09:59 -05:00
|
|
|
<td>lots</td>
|
2005-12-27 20:52:03 -05:00
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>SampleFormat</tt></td>
|
|
|
|
|
<td>339</td>
|
|
|
|
|
<td>R/W</td>
|
|
|
|
|
<td> </td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>SMinSampleValue</tt></td>
|
|
|
|
|
<td>340</td>
|
|
|
|
|
<td>R/W</td>
|
|
|
|
|
<td> </td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>SMaxSampleValue</tt></td>
|
|
|
|
|
<td>341</td>
|
|
|
|
|
<td>R/W</td>
|
|
|
|
|
<td> </td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>JPEGTables</tt></td>
|
|
|
|
|
<td>347</td>
|
|
|
|
|
<td>R/W</td>
|
2005-12-27 22:09:59 -05:00
|
|
|
<td>used by JPEG codec</td>
|
2005-12-27 20:52:03 -05:00
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>YCbCrCoefficients</tt></td>
|
|
|
|
|
<td>529</td>
|
|
|
|
|
<td>R/W</td>
|
2005-12-27 22:09:59 -05:00
|
|
|
<td>used by <tt>TIFFReadRGBAImage</tt> support</td>
|
2005-12-27 20:52:03 -05:00
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>YCbCrSubsampling</tt></td>
|
|
|
|
|
<td>530</td>
|
|
|
|
|
<td>R/W</td>
|
2005-12-27 22:09:59 -05:00
|
|
|
<td>tile/strip size calculations</td>
|
2005-12-27 20:52:03 -05:00
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>YCbCrPositioning</tt></td>
|
|
|
|
|
<td>531</td>
|
|
|
|
|
<td>R/W</td>
|
|
|
|
|
<td> </td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>ReferenceBlackWhite</tt></td>
|
|
|
|
|
<td>532</td>
|
|
|
|
|
<td>R/W</td>
|
|
|
|
|
<td> </td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>Matteing</tt></td>
|
|
|
|
|
<td>32995</td>
|
|
|
|
|
<td>R</td>
|
2005-12-27 22:09:59 -05:00
|
|
|
<td>none (obsoleted by <tt>ExtraSamples</tt> tag)</td>
|
2005-12-27 20:52:03 -05:00
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>DataType</tt></td>
|
|
|
|
|
<td>32996</td>
|
|
|
|
|
<td>R</td>
|
2005-12-27 22:09:59 -05:00
|
|
|
<td>none (obsoleted by <tt>SampleFormat</tt> tag)</td>
|
2005-12-27 20:52:03 -05:00
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>ImageDepth</tt></td>
|
|
|
|
|
<td>32997</td>
|
|
|
|
|
<td>R/W</td>
|
2005-12-27 22:09:59 -05:00
|
|
|
<td>tile/strip calculations</td>
|
2005-12-27 20:52:03 -05:00
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td><tt>TileDepth</tt></td>
|
|
|
|
|
<td>32998</td>
|
|
|
|
|
<td>R/W</td>
|
2005-12-27 22:09:59 -05:00
|
|
|
<td>tile/strip calculations</td>
|
2005-12-27 20:52:03 -05:00
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</tr>
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<tr>
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<td><tt>StoNits</tt></td>
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<td>37439</td>
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<td>R/W</td>
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<td> </td>
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</tr>
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2005-12-27 22:09:59 -05:00
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</table>
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<p>
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The <tt>Matteing</tt> and <tt>DataType</tt>
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tags have been obsoleted by the 6.0
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<tt>ExtraSamples</tt> and <tt>SampleFormat</tt> tags.
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Consult the documentation on the
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<tt>ExtraSamples</tt> tag and Associated Alpha for elaboration. Note however
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that if you use Associated Alpha, you are expected to save data that is
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|
pre-multipled by Alpha. If this means nothing to you, check out
|
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Porter & Duff's paper in the '84 SIGGRAPH proceedings: "Compositing Digital
|
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Images".
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</p>
|
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<p>
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The <tt>ImageDepth</tt>
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tag is a non-standard, but registered tag that specifies
|
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the Z-dimension of volumetric data. The combination of <tt>ImageWidth</tt>,
|
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<tt>ImageLength</tt>, and <tt>ImageDepth</tt>,
|
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|
defines a 3D volume of pixels that are
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|
further specified by <tt>BitsPerSample</tt> and
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|
<tt>SamplesPerPixel</tt>. The <tt>TileDepth</tt>
|
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|
tag (also non-standard, but registered) can be used to specified a
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subvolume "tiling" of a volume of data.
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</p>
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|
<p>
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The Colorimetry, and CMYK tags are additions that appear in TIFF 6.0.
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Consult the TIFF 6.0 specification included in the <b>doc</b> directory
|
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|
and <a href="document.html">online</a>.
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</p>
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<p>
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The JPEG-related tag is specified in
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<a href="TIFFTechNote2.html">TIFF Technical Note #2</a> which defines
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a revised JPEG-in-TIFF scheme (revised over that appendix that was
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part of the TIFF 6.0 specification).
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</p>
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<hr>
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2005-12-27 20:52:03 -05:00
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<p>
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2005-12-27 22:09:59 -05:00
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Last updated: $Date: 2005-12-28 03:09:59 $
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</p>
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2005-12-27 20:52:03 -05:00
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</body>
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</html>
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2005-12-27 22:09:59 -05:00
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