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87 </script> 88 89 </div> 90 91 <main class="container"> 92 <div class="magick-template"> 93<div class="magick-header"> 94<p class="text-center"><a href="attribute.html#GetImageConvexHull">GetImageConvexHull</a> • <a href="attribute.html#GetImageDepth">GetImageDepth</a> • <a href="attribute.html#GetImageMinimumBoundingBox">GetImageMinimumBoundingBox</a> • <a href="attribute.html#GetImageQuantumDepth">GetImageQuantumDepth</a> • <a href="attribute.html#GetImageType">GetImageType</a> • <a href="attribute.html#IdentifyImageGray">IdentifyImageGray</a> • <a href="attribute.html#IdentifyImageMonochrome">IdentifyImageMonochrome</a> • <a href="attribute.html#IdentifyImageType">IdentifyImageType</a> • <a href="attribute.html#IsImageGray">IsImageGray</a> • <a href="attribute.html#IsImageMonochrome">IsImageMonochrome</a> • <a href="attribute.html#IsImageOpaque">IsImageOpaque</a> • <a href="attribute.html#SetImageDepth">SetImageDepth</a> • <a href="attribute.html#SetImageType">SetImageType</a></p> 95 96<h2><a href="../../api/MagickCore/attribute_8c.html" id="GetImageConvexHull">GetImageConvexHull</a></h2> 97 98<p>GetImageConvexHull() returns the convex hull points of an image canvas.</p> 99 100<p>The format of the GetImageConvexHull method is:</p> 101 102<pre class="text"> 103PointInfo *GetImageConvexHull(const Image *image, 104 size_t number_vertices,ExceptionInfo *exception) 105</pre> 106 107<p>A description of each parameter follows:</p> 108 109<dd> 110</dd> 111 112<dd> </dd> 113<dl class="dl-horizontal"> 114<dt>image</dt> 115<dd>the image. </dd> 116 117<dd> </dd> 118<dt>number_vertices</dt> 119<dd>the number of vertices in the convex hull. </dd> 120 121<dd> </dd> 122<dt>exception</dt> 123<dd>return any errors or warnings in this structure. </dd> 124 125<dd> </dd> 126</dl> 127<h2><a href="../../api/MagickCore/attribute_8c.html" id="GetImageDepth">GetImageDepth</a></h2> 128 129<p>GetImageDepth() returns the depth of a particular image channel.</p> 130 131<p>The format of the GetImageDepth method is:</p> 132 133<pre class="text"> 134size_t GetImageDepth(const Image *image,ExceptionInfo *exception) 135</pre> 136 137<p>A description of each parameter follows:</p> 138 139<dd> 140</dd> 141 142<dd> </dd> 143<dl class="dl-horizontal"> 144<dt>image</dt> 145<dd>the image. </dd> 146 147<dd> </dd> 148<dt>exception</dt> 149<dd>return any errors or warnings in this structure. </dd> 150 151<dd> </dd> 152</dl> 153<h2><a href="../../api/MagickCore/attribute_8c.html" id="GetImageMinimumBoundingBox">GetImageMinimumBoundingBox</a></h2> 154 155<p>GetImageMinimumBoundingBox() returns the points that form the minimum bounding box around the image foreground objects with the "Rotating Calipers" algorithm. The method also returns these properties:</p> 156 157<pre class="text"> 158 minimum-bounding-box:height, and minimum-bounding-box:angle. 159</pre> 160 161<p>The format of the GetImageMinimumBoundingBox method is:</p> 162 163<pre class="text"> 164PointInfo *GetImageMinimumBoundingBox(Image *image, 165 size_t number_vertices,ExceptionInfo *exception) 166</pre> 167 168<p>A description of each parameter follows:</p> 169 170<dd> 171</dd> 172 173<dd> </dd> 174<dl class="dl-horizontal"> 175<dt>image</dt> 176<dd>the image. </dd> 177 178<dd> </dd> 179<dt>number_vertices</dt> 180<dd>the number of vertices in the bounding box. </dd> 181 182<dd> </dd> 183<dt>exception</dt> 184<dd>return any errors or warnings in this structure. </dd> 185 186<dd> </dd> 187</dl> 188<h2><a href="../../api/MagickCore/attribute_8c.html" id="GetImageQuantumDepth">GetImageQuantumDepth</a></h2> 189 190<p>GetImageQuantumDepth() returns the depth of the image rounded to a legal quantum depth: 8, 16, or 32.</p> 191 192<p>The format of the GetImageQuantumDepth method is:</p> 193 194<pre class="text"> 195size_t GetImageQuantumDepth(const Image *image, 196 const MagickBooleanType constrain) 197</pre> 198 199<p>A description of each parameter follows:</p> 200 201<dd> 202</dd> 203 204<dd> </dd> 205<dl class="dl-horizontal"> 206<dt>image</dt> 207<dd>the image. </dd> 208 209<dd> </dd> 210<dt>constrain</dt> 211<dd>A value other than MagickFalse, constrains the depth to a maximum of MAGICKCORE_QUANTUM_DEPTH. </dd> 212 213<dd> </dd> 214</dl> 215<h2><a href="../../api/MagickCore/attribute_8c.html" id="GetImageType">GetImageType</a></h2> 216 217<p>GetImageType() returns the type of image:</p> 218 219<p>Bilevel Grayscale GrayscaleMatte Palette PaletteMatte TrueColor TrueColorMatte ColorSeparation ColorSeparationMatte</p> 220 221<p>The format of the GetImageType method is:</p> 222 223<pre class="text"> 224ImageType GetImageType(const Image *image) 225</pre> 226 227<p>A description of each parameter follows:</p> 228 229<dd> 230</dd> 231 232<dd> </dd> 233<dl class="dl-horizontal"> 234<dt>image</dt> 235<dd>the image. </dd> 236 237<dd> </dd> 238</dl> 239<h2><a href="../../api/MagickCore/attribute_8c.html" id="IdentifyImageGray">IdentifyImageGray</a></h2> 240 241<p>IdentifyImageGray() returns grayscale if all the pixels in the image have the same red, green, and blue intensities, and bi-level is the intensity is either 0 or QuantumRange. Otherwise undefined is returned.</p> 242 243<p>The format of the IdentifyImageGray method is:</p> 244 245<pre class="text"> 246ImageType IdentifyImageGray(const Image *image,ExceptionInfo *exception) 247</pre> 248 249<p>A description of each parameter follows:</p> 250 251<dd> 252</dd> 253 254<dd> </dd> 255<dl class="dl-horizontal"> 256<dt>image</dt> 257<dd>the image. </dd> 258 259<dd> </dd> 260<dt>exception</dt> 261<dd>return any errors or warnings in this structure. </dd> 262 263<dd> </dd> 264</dl> 265<h2><a href="../../api/MagickCore/attribute_8c.html" id="IdentifyImageMonochrome">IdentifyImageMonochrome</a></h2> 266 267<p>IdentifyImageMonochrome() returns MagickTrue if all the pixels in the image have the same red, green, and blue intensities and the intensity is either 0 or QuantumRange.</p> 268 269<p>The format of the IdentifyImageMonochrome method is:</p> 270 271<pre class="text"> 272MagickBooleanType IdentifyImageMonochrome(const Image *image, 273 ExceptionInfo *exception) 274</pre> 275 276<p>A description of each parameter follows:</p> 277 278<dd> 279</dd> 280 281<dd> </dd> 282<dl class="dl-horizontal"> 283<dt>image</dt> 284<dd>the image. </dd> 285 286<dd> </dd> 287<dt>exception</dt> 288<dd>return any errors or warnings in this structure. </dd> 289 290<dd> </dd> 291</dl> 292<h2><a href="../../api/MagickCore/attribute_8c.html" id="IdentifyImageType">IdentifyImageType</a></h2> 293 294<p>IdentifyImageType() returns the potential type of image:</p> 295 296<p>Bilevel Grayscale GrayscaleMatte Palette PaletteMatte TrueColor TrueColorMatte ColorSeparation ColorSeparationMatte</p> 297 298<p>To ensure the image type matches its potential, use SetImageType():</p> 299 300<pre class="text"> 301 (void) SetImageType(image,IdentifyImageType(image,exception),exception); 302</pre> 303 304<p>The format of the IdentifyImageType method is:</p> 305 306<pre class="text"> 307ImageType IdentifyImageType(const Image *image,ExceptionInfo *exception) 308</pre> 309 310<p>A description of each parameter follows:</p> 311 312<dd> 313</dd> 314 315<dd> </dd> 316<dl class="dl-horizontal"> 317<dt>image</dt> 318<dd>the image. </dd> 319 320<dd> </dd> 321<dt>exception</dt> 322<dd>return any errors or warnings in this structure. </dd> 323 324<dd> </dd> 325</dl> 326<h2><a href="../../api/MagickCore/attribute_8c.html" id="IsImageGray">IsImageGray</a></h2> 327 328<p>IsImageGray() returns MagickTrue if the type of the image is grayscale or bi-level.</p> 329 330<p>The format of the IsImageGray method is:</p> 331 332<pre class="text"> 333MagickBooleanType IsImageGray(const Image *image) 334</pre> 335 336<p>A description of each parameter follows:</p> 337 338<dd> 339</dd> 340 341<dd> </dd> 342<dl class="dl-horizontal"> 343<dt>image</dt> 344<dd>the image. </dd> 345 346<dd> </dd> 347</dl> 348<h2><a href="../../api/MagickCore/attribute_8c.html" id="IsImageMonochrome">IsImageMonochrome</a></h2> 349 350<p>IsImageMonochrome() returns MagickTrue if type of the image is bi-level.</p> 351 352<p>The format of the IsImageMonochrome method is:</p> 353 354<pre class="text"> 355MagickBooleanType IsImageMonochrome(const Image *image) 356</pre> 357 358<p>A description of each parameter follows:</p> 359 360<dd> 361</dd> 362 363<dd> </dd> 364<dl class="dl-horizontal"> 365<dt>image</dt> 366<dd>the image. </dd> 367 368<dd> </dd> 369</dl> 370<h2><a href="../../api/MagickCore/attribute_8c.html" id="IsImageOpaque">IsImageOpaque</a></h2> 371 372<p>IsImageOpaque() returns MagickTrue if none of the pixels in the image have an alpha value other than OpaqueAlpha (QuantumRange).</p> 373 374<p>Will return true immediatally is alpha channel is not available.</p> 375 376<p>The format of the IsImageOpaque method is:</p> 377 378<pre class="text"> 379MagickBooleanType IsImageOpaque(const Image *image, 380 ExceptionInfo *exception) 381</pre> 382 383<p>A description of each parameter follows:</p> 384 385<dd> 386</dd> 387 388<dd> </dd> 389<dl class="dl-horizontal"> 390<dt>image</dt> 391<dd>the image. </dd> 392 393<dd> </dd> 394<dt>exception</dt> 395<dd>return any errors or warnings in this structure. </dd> 396 397<dd> </dd> 398</dl> 399<h2><a href="../../api/MagickCore/attribute_8c.html" id="SetImageDepth">SetImageDepth</a></h2> 400 401<p>SetImageDepth() sets the depth of the image.</p> 402 403<p>The format of the SetImageDepth method is:</p> 404 405<pre class="text"> 406MagickBooleanType SetImageDepth(Image *image,const size_t depth, 407 ExceptionInfo *exception) 408</pre> 409 410<p>A description of each parameter follows:</p> 411 412<dd> 413</dd> 414 415<dd> </dd> 416<dl class="dl-horizontal"> 417<dt>image</dt> 418<dd>the image. </dd> 419 420<dd> </dd> 421<dt>channel</dt> 422<dd>the channel. </dd> 423 424<dd> </dd> 425<dt>depth</dt> 426<dd>the image depth. </dd> 427 428<dd> </dd> 429<dt>exception</dt> 430<dd>return any errors or warnings in this structure. </dd> 431 432<dd> </dd> 433</dl> 434<h2><a href="../../api/MagickCore/attribute_8c.html" id="SetImageType">SetImageType</a></h2> 435 436<p>SetImageType() sets the type of image. Choose from these types:</p> 437 438<p>Bilevel Grayscale GrayscaleMatte Palette PaletteMatte TrueColor TrueColorMatte ColorSeparation ColorSeparationMatte OptimizeType</p> 439 440<p>The format of the SetImageType method is:</p> 441 442<pre class="text"> 443MagickBooleanType SetImageType(Image *image,const ImageType type, 444 ExceptionInfo *exception) 445</pre> 446 447<p>A description of each parameter follows:</p> 448 449<dd> 450</dd> 451 452<dd> </dd> 453<dl class="dl-horizontal"> 454<dt>image</dt> 455<dd>the image. </dd> 456 457<dd> </dd> 458<dt>type</dt> 459<dd>Image type. </dd> 460 461<dd> </dd> 462<dt>exception</dt> 463<dd>return any errors or warnings in this structure. </dd> 464 465<dd> </dd> 466</dl> 467</div> 468 </div> 469 </main><!-- /.container --> 470 <footer class="magick-footer"> 471 <div class="container-fluid"> 472 <a href="../../www/security-policy.html">Security</a> • 473 <a href="../../www/news.html">News</a> 474 475 <a href="attribute.html#"><img class="d-inline" id="wand" alt="And Now a Touch of Magick" width="16" height="16" src="../../../images/wand.ico"/></a> 476 477 <a href="../../www/links.html">Related</a> • 478 <a href="../../www/sitemap.html">Sitemap</a> 479 <br/> 480 <a href="../../www/support.html">Sponsor</a> • 481 <a href="../../www/cite.html">Cite</a> • 482 <a href="http://pgp.mit.edu/pks/lookup?op=get&search=0x89AB63D48277377A">Public Key</a> • 483 <a href="../../www/contact.html">Contact Us</a> 484 <br/> 485 <a href="https://github.com/imagemagick/imagemagick" target="_blank" rel="noopener" aria-label="GitHub"><svg xmlns="http://www.w3.org/2000/svg" class="navbar-nav-svg" viewBox="0 0 512 499.36" width="2%" height="2%" role="img" focusable="false"><title>GitHub</title><path fill="currentColor" fill-rule="evenodd" d="M256 0C114.64 0 0 114.61 0 256c0 113.09 73.34 209 175.08 242.9 12.8 2.35 17.47-5.56 17.47-12.34 0-6.08-.22-22.18-.35-43.54-71.2 15.49-86.2-34.34-86.2-34.34-11.64-29.57-28.42-37.45-28.42-37.45-23.27-15.84 1.73-15.55 1.73-15.55 25.69 1.81 39.21 26.38 39.21 26.38 22.84 39.12 59.92 27.82 74.5 21.27 2.33-16.54 8.94-27.82 16.25-34.22-56.84-6.43-116.6-28.43-116.6-126.49 0-27.95 10-50.8 26.35-68.69-2.63-6.48-11.42-32.5 2.51-67.75 0 0 21.49-6.88 70.4 26.24a242.65 242.65 0 0 1 128.18 0c48.87-33.13 70.33-26.24 70.33-26.24 14 35.25 5.18 61.27 2.55 67.75 16.41 17.9 26.31 40.75 26.31 68.69 0 98.35-59.85 120-116.88 126.32 9.19 7.9 17.38 23.53 17.38 47.41 0 34.22-.31 61.83-.31 70.23 0 6.85 4.61 14.81 17.6 12.31C438.72 464.97 512 369.08 512 256.02 512 114.62 397.37 0 256 0z"/></svg></a> • 486 <a href="https://twitter.com/imagemagick" target="_blank" rel="noopener" aria-label="Twitter"><svg xmlns="http://www.w3.org/2000/svg" class="navbar-nav-svg" viewBox="0 0 512 416.32" width="2%" height="2%" role="img" focusable="false"><title>Twitter</title><path fill="currentColor" d="M160.83 416.32c193.2 0 298.92-160.22 298.92-298.92 0-4.51 0-9-.2-13.52A214 214 0 0 0 512 49.38a212.93 212.93 0 0 1-60.44 16.6 105.7 105.7 0 0 0 46.3-58.19 209 209 0 0 1-66.79 25.37 105.09 105.09 0 0 0-181.73 71.91 116.12 116.12 0 0 0 2.66 24c-87.28-4.3-164.73-46.3-216.56-109.82A105.48 105.48 0 0 0 68 159.6a106.27 106.27 0 0 1-47.53-13.11v1.43a105.28 105.28 0 0 0 84.21 103.06 105.67 105.67 0 0 1-47.33 1.84 105.06 105.06 0 0 0 98.14 72.94A210.72 210.72 0 0 1 25 370.84a202.17 202.17 0 0 1-25-1.43 298.85 298.85 0 0 0 160.83 46.92"/></svg></a> 487 <br/> 488 <small>© 1999-2021 ImageMagick Studio LLC</small> 489 </div> 490 </footer> 491 492 <!-- Javascript assets --> 493 <script src="../../assets/magick.js" ></script> 494 </body> 495</html> 496