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| | 4 | <title>TIFF 6.0 Specification Coverage</title> |
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| | 14 | <table border="0" cellspacing="0" cellpadding="0"> |
| | 15 | <tr> |
| | 16 | <td style="padding-left: 1em; padding-right: 1em"><img src="images/strike.gif" width="128" height="100" alt=""></td> |
| | 17 | <td> |
| | 18 | <h1>TIFF 6.0 Specification Coverage</h1> |
| | 19 | <p> |
| | 20 | The library is capable of dealing with images that are written to |
| | 21 | follow the 5.0 or 6.0 TIFF spec. There is also considerable support |
| | 22 | for some of the more esoteric portions of the 6.0 TIFF spec. |
| | 23 | </p> |
| | 24 | </td> |
| | 25 | </tr> |
| | 26 | </table> |
| | 27 | <br> |
| | 28 | <table border="1" cellspacing="0" cellpadding="5"> |
| | 29 | <tr> |
| | 30 | <th>Core requirements</th> |
| | 31 | <td> |
| | 32 | <p> |
| | 33 | Both <tt>"MM"</tt> and <tt>"II"</tt> byte orders are handled. |
| | 34 | Both packed and separated planar configuration of samples. |
| | 35 | Any number of samples per pixel (memory permitting). |
| | 36 | Any image width and height (memory permitting). |
| | 37 | Multiple subfiles can be read and written. |
| | 38 | Editing is <b>not</b> supported in that related subfiles (e.g. |
| | 39 | a reduced resolution version of an image) are not automatically |
| | 40 | updated. |
| | 41 | </p> |
| | 42 | <p> |
| | 43 | Tags handled: <tt>ExtraSamples</tt>, <tt>ImageWidth</tt>, |
| | 44 | <tt>ImageLength</tt>, <tt>NewSubfileType</tt>, <tt>ResolutionUnit</tt>. |
| | 45 | <tt>Rowsperstrip</tt>, <tt>StripOffsets</tt>, <tt>StripByteCounts</tt>, |
| | 46 | <tt>XResolution</tt>, <tt>YResolution</tt> |
| | 47 | </p> |
| | 48 | </td> |
| | 49 | </tr> |
| | 50 | <tr> |
| | 51 | <th>Tiled Images</th> |
| | 52 | <td><tt>TileWidth</tt>, <tt>TileLength</tt>, <tt>TileOffsets</tt>, |
| | 53 | <tt>TileByteCounts</tt></td> |
| | 54 | </tr> |
| | 55 | <tr> |
| | 56 | <th>Image Colorimetry Information</th> |
| | 57 | <td><tt>WhitePoint</tt>, <tt>PrimaryChromaticities</tt>, <tt>TransferFunction</tt>, |
| | 58 | <tt>ReferenceBlackWhite</tt></td> |
| | 59 | </tr> |
| | 60 | <tr> |
| | 61 | <th>Class B for bilevel images</th> |
| | 62 | <td><tt>SamplesPerPixel</tt> = 1<br> |
| | 63 | <tt>BitsPerSample</tt> = 1<br> |
| | 64 | <tt>Compression</tt> = 1 (none), 2 (CCITT 1D), or 32773 (PackBits)<br> |
| | 65 | <tt>PhotometricInterpretation</tt> = 0 (Min-is-White), 1 (Min-is-Black)</td> |
| | 66 | </tr> |
| | 67 | <tr> |
| | 68 | <th>Class G for grayscale images</th> |
| | 69 | <td><tt>SamplesPerPixel</tt> = 1<br> |
| | 70 | <tt>BitsPerSample</tt> = 4, 8<br> |
| | 71 | <tt>Compression</tt> = 1 (none) 5 (LZW)<br> |
| | 72 | <tt>PhotometricInterpretation</tt> = 0 (Min-is-White), 1 (Min-is-Black)</td> |
| | 73 | </tr> |
| | 74 | <tr> |
| | 75 | <th>Class P for palette color images</th> |
| | 76 | <td><tt>SamplesPerPixel</tt> = 1<br> |
| | 77 | <tt>BitsPerSample</tt> = 1-8<br> |
| | 78 | <tt>Compression</tt> = 1 (none) 5 (LZW)<br> |
| | 79 | <tt>PhotometricInterpretation</tt> = 3 (Palette RGB)<br> |
| | 80 | <tt>ColorMap</tt></td> |
| | 81 | </tr> |
| | 82 | <tr> |
| | 83 | <th>Class R for RGB full color images</th> |
| | 84 | <td><tt>SamplesPerPixel</tt> = 3<br> |
| | 85 | <tt>BitsPerSample</tt> = <8,8,8><br> |
| | 86 | <tt>PlanarConfiguration</tt> = 1, 2<br> |
| | 87 | <tt>Compression</tt> = 1 (none) 5 (LZW)<br> |
| | 88 | <tt>PhotometricInterpretation</tt> = 2 (RGB)</td> |
| | 89 | </tr> |
| | 90 | <tr> |
| | 91 | <th>Class F for facsimile</th> |
| | 92 | <td>(<i>Class B tags plus...</i>)<br> |
| | 93 | <tt>Compression</tt> = 3 (CCITT Group 3), 4 (CCITT Group 4)<br> |
| | 94 | <tt>FillOrder</tt> = 1 (MSB), 2 (LSB)<br> |
| | 95 | <tt>Group3Options</tt> = 1 (2d encoding), 4 (zero fill), 5 (2d+fill)<br> |
| | 96 | <tt>ImageWidth</tt> = 1728, 2048, 2482<br> |
| | 97 | <tt>NewSubFileType</tt> = 2<br> |
| | 98 | <tt>ResolutionUnit</tt> = 2 (Inch), 3 (Centimeter)<br> |
| | 99 | <tt>PageNumber</tt>, |
| | 100 | <tt>XResolution</tt>, |
| | 101 | <tt>YResolution</tt>, |
| | 102 | <tt>Software</tt>, |
| | 103 | <tt>BadFaxLines</tt>, |
| | 104 | <tt>CleanFaxData</tt>, |
| | 105 | <tt>ConsecutiveBadFaxLines</tt>, |
| | 106 | <tt>DateTime</tt>, |
| | 107 | <tt>DocumentName</tt>, |
| | 108 | <tt>ImageDescription</tt>, |
| | 109 | <tt>Orientation</tt></td> |
| | 110 | </tr> |
| | 111 | <tr> |
| | 112 | <th>Class S for separated images</th> |
| | 113 | <td><tt>SamplesPerPixel</tt> = 4<br> |
| | 114 | <tt>PlanarConfiguration</tt> = 1, 2<br> |
| | 115 | <tt>Compression</tt> = 1 (none), 5 (LZW)<br> |
| | 116 | <tt>PhotometricInterpretation</tt> = 5 (Separated)<br> |
| | 117 | <tt>InkSet</tt> = 1 (CMYK)<br> |
| | 118 | <tt>DotRange</tt>, |
| | 119 | <tt>InkNames</tt>, |
| | 120 | <tt>DotRange</tt>, |
| | 121 | <tt>TargetPrinter</tt></td> |
| | 122 | </tr> |
| | 123 | <tr> |
| | 124 | <th>Class Y for YCbCr images</th> |
| | 125 | <td><tt>SamplesPerPixel</tt> = 3<br> |
| | 126 | <tt>BitsPerSample</tt> = <8,8,8><br> |
| | 127 | <tt>PlanarConfiguration</tt> = 1, 2<br> |
| | 128 | <tt>Compression</tt> = 1 (none), 5 (LZW), 7 (JPEG)<br> |
| | 129 | <tt>PhotometricInterpretation</tt> = 6 (YCbCr)<br> |
| | 130 | <tt>YCbCrCoefficients</tt>, |
| | 131 | <tt>YCbCrSubsampling</tt>, |
| | 132 | <tt>YCbCrPositioning</tt><br> |
| | 133 | (<i>colorimetry info from Appendix H; see above</i>)</td> |
| | 134 | </tr> |
| | 135 | <tr> |
| | 136 | <th>Class "JPEG" for JPEG images (per TTN2)</th> |
| | 137 | <td><tt>PhotometricInterpretation</tt> = 1 (grayscale), 2 (RGB), 5 (CMYK), 6 (YCbCr)<br> |
| | 138 | (<i>Class Y tags if YCbCr</i>)<br> |
| | 139 | (<i>Class S tags if CMYK</i>)<br> |
| | 140 | <tt>Compression</tt> = 7 (JPEG)</td> |
| | 141 | </tr> |
| | 142 | </table> |
| | 143 | <p> |
| | 144 | In addition, the library supports some optional compression algorithms |
| | 145 | that are, in some cases, of dubious value. |
| | 146 | </p> |
| | 147 | <table border="0" cellspacing="0" cellpadding="2"> |
| | 148 | <tr><th>Compression tag value</th><th>Compression algorithm</th></tr> |
| | 149 | <tr><td>32766</td><td>NeXT 2-bit encoding</td></tr> |
| | 150 | <tr><td>32809</td><td>ThunderScan 4-bit encoding</td></tr> |
| | 151 | <tr><td>32909</td><td>Pixar companded 11-bit ZIP encoding</td></tr> |
| | 152 | <tr><td>32946</td><td>PKZIP-style Deflate encoding (experimental)</td></tr> |
| | 153 | <tr><td>34676</td><td>SGI 32-bit Log Luminance encoding (experimental)</td></tr> |
| | 154 | <tr><td>34677</td><td>SGI 24-bit Log Luminance encoding (experimental)</td></tr> |
| | 155 | </table> |
| | 156 | <br> |
| | 157 | <p> |
| | 158 | Note that there is no support for the JPEG-related tags defined |
| | 159 | in the 6.0 specification; the JPEG support is based on the post-6.0 |
| | 160 | proposal given in TIFF Technical Note #2. |
| | 161 | </p> |
| | 162 | <table> |
| | 163 | <tr> |
| | 164 | <td valign=top><img src="images/info.gif" width="32" height="32" alt=""></td> |
| | 165 | <td>For more information on the experimental Log Luminance encoding |
| | 166 | consult the materials available at |
| | 167 | <a href="http://www.anyhere.com/gward/pixformat/tiffluv.html">http://www.anyhere.com/gward/pixformat/tiffluv.html</a>.</td> |
| | 168 | </tr> |
| | 169 | </table> |
| | 170 | <br> |
| | 171 | <p> |
| | 172 | The following table shows the tags that are recognized |
| | 173 | and how they are used by the library. If no use is indicated, |
| | 174 | then the library reads and writes the tag, but does not use it internally. |
| | 175 | </p> |
| | 176 | <table border="1" cellspacing="0" cellpadding="5"> |
| | 177 | <tr> |
| | 178 | <th>Tag Name</th> |
| | 179 | <th>Value</th> |
| | 180 | <th>R/W</th> |
| | 181 | <th>Library's Use (Comments)</th> |
| | 182 | </tr> |
| | 183 | <tr> |
| | 184 | <td><tt>NewSubFileType</tt></td> |
| | 185 | <td>254</td> |
| | 186 | <td>R/W</td> |
| | 187 | <td>none (called <tt>SubFileType</tt> in <tiff.h>)</td> |
| | 188 | </tr> |
| | 189 | <tr> |
| | 190 | <td><tt>SubFileType</tt></td> |
| | 191 | <td>255</td> |
| | 192 | <td>R/W</td> |
| | 193 | <td>none (called <tt>OSubFileType</tt> in <tiff.h>)</td> |
| | 194 | </tr> |
| | 195 | <tr> |
| | 196 | <td><tt>ImageWidth</tt></td> |
| | 197 | <td>256</td> |
| | 198 | <td>R/W</td> |
| | 199 | <td>lots</td> |
| | 200 | </tr> |
| | 201 | <tr> |
| | 202 | <td><tt>ImageLength</tt></td> |
| | 203 | <td>257</td> |
| | 204 | <td>R/W</td> |
| | 205 | <td>lots</td> |
| | 206 | </tr> |
| | 207 | <tr> |
| | 208 | <td><tt>BitsPerSample</tt></td> |
| | 209 | <td>258</td> |
| | 210 | <td>R/W</td> |
| | 211 | <td>lots</td> |
| | 212 | </tr> |
| | 213 | <tr> |
| | 214 | <td><tt>Compression</tt></td> |
| | 215 | <td>259</td> |
| | 216 | <td>R/W</td> |
| | 217 | <td>to select appropriate codec</td> |
| | 218 | </tr> |
| | 219 | <tr> |
| | 220 | <td><tt>PhotometricInterpretation</tt></td> |
| | 221 | <td>262</td> |
| | 222 | <td>R/W</td> |
| | 223 | <td>lots</td> |
| | 224 | </tr> |
| | 225 | <tr> |
| | 226 | <td><tt>Thresholding</tt></td> |
| | 227 | <td>263</td> |
| | 228 | <td>R/W</td> |
| | 229 | <td> </td> |
| | 230 | </tr> |
| | 231 | <tr> |
| | 232 | <td><tt>CellWidth</tt></td> |
| | 233 | <td>264</td> |
| | 234 | <td> </td> |
| | 235 | <td>parsed but ignored</td> |
| | 236 | </tr> |
| | 237 | <tr> |
| | 238 | <td><tt>CellLength</tt></td> |
| | 239 | <td>265</td> |
| | 240 | <td> </td> |
| | 241 | <td>parsed but ignored</td> |
| | 242 | </tr> |
| | 243 | <tr> |
| | 244 | <td><tt>FillOrder</tt></td> |
| | 245 | <td>266</td> |
| | 246 | <td>R/W</td> |
| | 247 | <td>control bit order</td> |
| | 248 | </tr> |
| | 249 | <tr> |
| | 250 | <td><tt>DocumentName</tt></td> |
| | 251 | <td>269</td> |
| | 252 | <td>R/W</td> |
| | 253 | <td> </td> |
| | 254 | </tr> |
| | 255 | <tr> |
| | 256 | <td><tt>ImageDescription</tt></td> |
| | 257 | <td>270</td> |
| | 258 | <td>R/W</td> |
| | 259 | <td> </td> |
| | 260 | </tr> |
| | 261 | <tr> |
| | 262 | <td><tt>Make</tt></td> |
| | 263 | <td>271</td> |
| | 264 | <td>R/W</td> |
| | 265 | <td> </td> |
| | 266 | </tr> |
| | 267 | <tr> |
| | 268 | <td><tt>Model</tt></td> |
| | 269 | <td>272</td> |
| | 270 | <td>R/W</td> |
| | 271 | <td> </td> |
| | 272 | </tr> |
| | 273 | <tr> |
| | 274 | <td><tt>StripOffsets</tt></td> |
| | 275 | <td>273</td> |
| | 276 | <td>R/W</td> |
| | 277 | <td>data i/o</td> |
| | 278 | </tr> |
| | 279 | <tr> |
| | 280 | <td><tt>Orientation</tt></td> |
| | 281 | <td>274</td> |
| | 282 | <td>R/W</td> |
| | 283 | <td> </td> |
| | 284 | </tr> |
| | 285 | <tr> |
| | 286 | <td><tt>SamplesPerPixel</tt></td> |
| | 287 | <td>277</td> |
| | 288 | <td>R/W</td> |
| | 289 | <td>lots</td> |
| | 290 | </tr> |
| | 291 | <tr> |
| | 292 | <td><tt>RowsPerStrip</tt></td> |
| | 293 | <td>278</td> |
| | 294 | <td>R/W</td> |
| | 295 | <td>data i/o</td> |
| | 296 | </tr> |
| | 297 | <tr> |
| | 298 | <td><tt>StripByteCounts</tt></td> |
| | 299 | <td>279</td> |
| | 300 | <td>R/W</td> |
| | 301 | <td>data i/o</td> |
| | 302 | </tr> |
| | 303 | <tr> |
| | 304 | <td><tt>MinSampleValue</tt></td> |
| | 305 | <td>280</td> |
| | 306 | <td>R/W</td> |
| | 307 | <td> </td> |
| | 308 | </tr> |
| | 309 | <tr> |
| | 310 | <td><tt>MaxSampleValue</tt></td> |
| | 311 | <td>281</td> |
| | 312 | <td>R/W</td> |
| | 313 | <td> </td> |
| | 314 | </tr> |
| | 315 | <tr> |
| | 316 | <td><tt>XResolution</tt></td> |
| | 317 | <td>282</td> |
| | 318 | <td>R/W</td> |
| | 319 | <td> </td> |
| | 320 | </tr> |
| | 321 | <tr> |
| | 322 | <td><tt>YResolution</tt></td> |
| | 323 | <td>283</td> |
| | 324 | <td>R/W</td> |
| | 325 | <td>used by Group 3 2d encoder</td> |
| | 326 | </tr> |
| | 327 | <tr> |
| | 328 | <td><tt>PlanarConfiguration</tt></td> |
| | 329 | <td>284</td> |
| | 330 | <td>R/W</td> |
| | 331 | <td>data i/o</td> |
| | 332 | </tr> |
| | 333 | <tr> |
| | 334 | <td><tt>PageName</tt></td> |
| | 335 | <td>285</td> |
| | 336 | <td>R/W</td> |
| | 337 | <td> </td> |
| | 338 | </tr> |
| | 339 | <tr> |
| | 340 | <td><tt>XPosition</tt></td> |
| | 341 | <td>286</td> |
| | 342 | <td>R/W</td> |
| | 343 | <td> </td> |
| | 344 | </tr> |
| | 345 | <tr> |
| | 346 | <td><tt>YPosition</tt></td> |
| | 347 | <td>286</td> |
| | 348 | <td>R/W</td> |
| | 349 | <td> </td> |
| | 350 | </tr> |
| | 351 | <tr> |
| | 352 | <td><tt>FreeOffsets</tt></td> |
| | 353 | <td>288</td> |
| | 354 | <td> </td> |
| | 355 | <td>parsed but ignored</td> |
| | 356 | </tr> |
| | 357 | <tr> |
| | 358 | <td><tt>FreeByteCounts</tt></td> |
| | 359 | <td>289</td> |
| | 360 | <td> </td> |
| | 361 | <td>parsed but ignored</td> |
| | 362 | </tr> |
| | 363 | <tr> |
| | 364 | <td><tt>GrayResponseUnit</tt></td> |
| | 365 | <td>290</td> |
| | 366 | <td> </td> |
| | 367 | <td>parsed but ignored</td> |
| | 368 | </tr> |
| | 369 | <tr> |
| | 370 | <td><tt>GrayResponseCurve</tt></td> |
| | 371 | <td>291</td> |
| | 372 | <td> </td> |
| | 373 | <td>parsed but ignored</td> |
| | 374 | </tr> |
| | 375 | <tr> |
| | 376 | <td><tt>Group3Options</tt></td> |
| | 377 | <td>292</td> |
| | 378 | <td>R/W</td> |
| | 379 | <td>used by Group 3 codec</td> |
| | 380 | </tr> |
| | 381 | <tr> |
| | 382 | <td><tt>Group4Options</tt></td> |
| | 383 | <td>293</td> |
| | 384 | <td>R/W</td> |
| | 385 | <td> </td> |
| | 386 | </tr> |
| | 387 | <tr> |
| | 388 | <td><tt>ResolutionUnit</tt></td> |
| | 389 | <td>296</td> |
| | 390 | <td>R/W</td> |
| | 391 | <td>used by Group 3 2d encoder</td> |
| | 392 | </tr> |
| | 393 | <tr> |
| | 394 | <td><tt>PageNumber</tt></td> |
| | 395 | <td>297</td> |
| | 396 | <td>R/W</td> |
| | 397 | <td> </td> |
| | 398 | </tr> |
| | 399 | <tr> |
| | 400 | <td><tt>ColorResponseUnit</tt></td> |
| | 401 | <td>300</td> |
| | 402 | <td> </td> |
| | 403 | <td>parsed but ignored</td> |
| | 404 | </tr> |
| | 405 | <tr> |
| | 406 | <td><tt>TransferFunction</tt></td> |
| | 407 | <td>301</td> |
| | 408 | <td>R/W</td> |
| | 409 | <td> </td> |
| | 410 | </tr> |
| | 411 | <tr> |
| | 412 | <td><tt>Software</tt></td> |
| | 413 | <td>305</td> |
| | 414 | <td>R/W</td> |
| | 415 | <td> </td> |
| | 416 | </tr> |
| | 417 | <tr> |
| | 418 | <td><tt>DateTime</tt></td> |
| | 419 | <td>306</td> |
| | 420 | <td>R/W</td> |
| | 421 | <td> </td> |
| | 422 | </tr> |
| | 423 | <tr> |
| | 424 | <td><tt>Artist</tt></td> |
| | 425 | <td>315</td> |
| | 426 | <td>R/W</td> |
| | 427 | <td> </td> |
| | 428 | </tr> |
| | 429 | <tr> |
| | 430 | <td><tt>HostComputer</tt></td> |
| | 431 | <td>316</td> |
| | 432 | <td>R/W</td> |
| | 433 | <td> </td> |
| | 434 | </tr> |
| | 435 | <tr> |
| | 436 | <td><tt>Predictor</tt></td> |
| | 437 | <td>317</td> |
| | 438 | <td>R/W</td> |
| | 439 | <td>used by LZW codec</td> |
| | 440 | </tr> |
| | 441 | <tr> |
| | 442 | <td><tt>WhitePoint</tt></td> |
| | 443 | <td>318</td> |
| | 444 | <td>R/W</td> |
| | 445 | <td> </td> |
| | 446 | </tr> |
| | 447 | <tr> |
| | 448 | <td><tt>PrimaryChromacities</tt></td> |
| | 449 | <td>319</td> |
| | 450 | <td>R/W</td> |
| | 451 | <td> </td> |
| | 452 | </tr> |
| | 453 | <tr> |
| | 454 | <td><tt>ColorMap</tt></td> |
| | 455 | <td>320</td> |
| | 456 | <td>R/W</td> |
| | 457 | <td> </td> |
| | 458 | </tr> |
| | 459 | <tr> |
| | 460 | <td><tt>TileWidth</tt></td> |
| | 461 | <td>322</td> |
| | 462 | <td>R/W</td> |
| | 463 | <td>data i/o</td> |
| | 464 | </tr> |
| | 465 | <tr> |
| | 466 | <td><tt>TileLength</tt></td> |
| | 467 | <td>323</td> |
| | 468 | <td>R/W</td> |
| | 469 | <td>data i/o</td> |
| | 470 | </tr> |
| | 471 | <tr> |
| | 472 | <td><tt>TileOffsets</tt></td> |
| | 473 | <td>324</td> |
| | 474 | <td>R/W</td> |
| | 475 | <td>data i/o</td> |
| | 476 | </tr> |
| | 477 | <tr> |
| | 478 | <td><tt>TileByteCounts</tt></td> |
| | 479 | <td>324</td> |
| | 480 | <td>R/W</td> |
| | 481 | <td>data i/o</td> |
| | 482 | </tr> |
| | 483 | <tr> |
| | 484 | <td><tt>BadFaxLines</tt></td> |
| | 485 | <td>326</td> |
| | 486 | <td>R/W</td> |
| | 487 | <td> </td> |
| | 488 | </tr> |
| | 489 | <tr> |
| | 490 | <td><tt>CleanFaxData</tt></td> |
| | 491 | <td>327</td> |
| | 492 | <td>R/W</td> |
| | 493 | <td> </td> |
| | 494 | </tr> |
| | 495 | <tr> |
| | 496 | <td><tt>ConsecutiveBadFaxLines</tt></td> |
| | 497 | <td>328</td> |
| | 498 | <td>R/W</td> |
| | 499 | <td> </td> |
| | 500 | </tr> |
| | 501 | <tr> |
| | 502 | <td><tt>SubIFD</tt></td> |
| | 503 | <td>330</td> |
| | 504 | <td>R/W</td> |
| | 505 | <td>subimage descriptor support</td> |
| | 506 | </tr> |
| | 507 | <tr> |
| | 508 | <td><tt>InkSet</tt></td> |
| | 509 | <td>332</td> |
| | 510 | <td>R/W</td> |
| | 511 | <td> </td> |
| | 512 | </tr> |
| | 513 | <tr> |
| | 514 | <td><tt>InkNames</tt></td> |
| | 515 | <td>333</td> |
| | 516 | <td>R/W</td> |
| | 517 | <td> </td> |
| | 518 | </tr> |
| | 519 | <tr> |
| | 520 | <td><tt>DotRange</tt></td> |
| | 521 | <td>336</td> |
| | 522 | <td>R/W</td> |
| | 523 | <td> </td> |
| | 524 | </tr> |
| | 525 | <tr> |
| | 526 | <td><tt>TargetPrinter</tt></td> |
| | 527 | <td>337</td> |
| | 528 | <td>R/W</td> |
| | 529 | <td> </td> |
| | 530 | </tr> |
| | 531 | <tr> |
| | 532 | <td><tt>ExtraSamples</tt></td> |
| | 533 | <td>338</td> |
| | 534 | <td>R/W</td> |
| | 535 | <td>lots</td> |
| | 536 | </tr> |
| | 537 | <tr> |
| | 538 | <td><tt>SampleFormat</tt></td> |
| | 539 | <td>339</td> |
| | 540 | <td>R/W</td> |
| | 541 | <td> </td> |
| | 542 | </tr> |
| | 543 | <tr> |
| | 544 | <td><tt>SMinSampleValue</tt></td> |
| | 545 | <td>340</td> |
| | 546 | <td>R/W</td> |
| | 547 | <td> </td> |
| | 548 | </tr> |
| | 549 | <tr> |
| | 550 | <td><tt>SMaxSampleValue</tt></td> |
| | 551 | <td>341</td> |
| | 552 | <td>R/W</td> |
| | 553 | <td> </td> |
| | 554 | </tr> |
| | 555 | <tr> |
| | 556 | <td><tt>JPEGTables</tt></td> |
| | 557 | <td>347</td> |
| | 558 | <td>R/W</td> |
| | 559 | <td>used by JPEG codec</td> |
| | 560 | </tr> |
| | 561 | <tr> |
| | 562 | <td><tt>YCbCrCoefficients</tt></td> |
| | 563 | <td>529</td> |
| | 564 | <td>R/W</td> |
| | 565 | <td>used by <tt>TIFFReadRGBAImage</tt> support</td> |
| | 566 | </tr> |
| | 567 | <tr> |
| | 568 | <td><tt>YCbCrSubsampling</tt></td> |
| | 569 | <td>530</td> |
| | 570 | <td>R/W</td> |
| | 571 | <td>tile/strip size calculations</td> |
| | 572 | </tr> |
| | 573 | <tr> |
| | 574 | <td><tt>YCbCrPositioning</tt></td> |
| | 575 | <td>531</td> |
| | 576 | <td>R/W</td> |
| | 577 | <td> </td> |
| | 578 | </tr> |
| | 579 | <tr> |
| | 580 | <td><tt>ReferenceBlackWhite</tt></td> |
| | 581 | <td>532</td> |
| | 582 | <td>R/W</td> |
| | 583 | <td> </td> |
| | 584 | </tr> |
| | 585 | <tr> |
| | 586 | <td><tt>Matteing</tt></td> |
| | 587 | <td>32995</td> |
| | 588 | <td>R</td> |
| | 589 | <td>none (obsoleted by <tt>ExtraSamples</tt> tag)</td> |
| | 590 | </tr> |
| | 591 | <tr> |
| | 592 | <td><tt>DataType</tt></td> |
| | 593 | <td>32996</td> |
| | 594 | <td>R</td> |
| | 595 | <td>none (obsoleted by <tt>SampleFormat</tt> tag)</td> |
| | 596 | </tr> |
| | 597 | <tr> |
| | 598 | <td><tt>ImageDepth</tt></td> |
| | 599 | <td>32997</td> |
| | 600 | <td>R/W</td> |
| | 601 | <td>tile/strip calculations</td> |
| | 602 | </tr> |
| | 603 | <tr> |
| | 604 | <td><tt>TileDepth</tt></td> |
| | 605 | <td>32998</td> |
| | 606 | <td>R/W</td> |
| | 607 | <td>tile/strip calculations</td> |
| | 608 | </tr> |
| | 609 | <tr> |
| | 610 | <td><tt>StoNits</tt></td> |
| | 611 | <td>37439</td> |
| | 612 | <td>R/W</td> |
| | 613 | <td> </td> |
| | 614 | </tr> |
| | 615 | </table> |
| | 616 | <p> |
| | 617 | The <tt>Matteing</tt> and <tt>DataType</tt> |
| | 618 | tags have been obsoleted by the 6.0 |
| | 619 | <tt>ExtraSamples</tt> and <tt>SampleFormat</tt> tags. |
| | 620 | Consult the documentation on the |
| | 621 | <tt>ExtraSamples</tt> tag and Associated Alpha for elaboration. Note however |
| | 622 | that if you use Associated Alpha, you are expected to save data that is |
| | 623 | pre-multipled by Alpha. If this means nothing to you, check out |
| | 624 | Porter & Duff's paper in the '84 SIGGRAPH proceedings: "Compositing Digital |
| | 625 | Images". |
| | 626 | </p> |
| | 627 | <p> |
| | 628 | The <tt>ImageDepth</tt> |
| | 629 | tag is a non-standard, but registered tag that specifies |
| | 630 | the Z-dimension of volumetric data. The combination of <tt>ImageWidth</tt>, |
| | 631 | <tt>ImageLength</tt>, and <tt>ImageDepth</tt>, |
| | 632 | defines a 3D volume of pixels that are |
| | 633 | further specified by <tt>BitsPerSample</tt> and |
| | 634 | <tt>SamplesPerPixel</tt>. The <tt>TileDepth</tt> |
| | 635 | tag (also non-standard, but registered) can be used to specified a |
| | 636 | subvolume "tiling" of a volume of data. |
| | 637 | </p> |
| | 638 | <p> |
| | 639 | The Colorimetry, and CMYK tags are additions that appear in TIFF 6.0. |
| | 640 | Consult the TIFF 6.0 specification included in the <b>doc</b> directory |
| | 641 | and <a href="document.html">online</a>. |
| | 642 | </p> |
| | 643 | <p> |
| | 644 | The JPEG-related tag is specified in |
| | 645 | <a href="TIFFTechNote2.html">TIFF Technical Note #2</a> which defines |
| | 646 | a revised JPEG-in-TIFF scheme (revised over that appendix that was |
| | 647 | part of the TIFF 6.0 specification). |
| | 648 | </p> |
| | 649 | <hr> |
| | 650 | <p> |
| | 651 | Last updated: $Date: 2005/12/28 06:53:18 $ |
| | 652 | </p> |
| | 653 | </body> |
| | 654 | </html> |
| | 655 | |
projects / wxWidgets.git / blame_incremental