1 2 3 4 5 <!DOCTYPE html> 6 <html lang="en"> 7 <head> 8 <title>ImageMagick: MagickCore, C API for ImageMagick: Transform an Image</title> 9 <meta charset="utf-8" /> 10 <meta http-equiv="X-UA-Compatible" content="IE=edge" /> 11 <meta name="viewport" content="width=device-width, initial-scale=1" /> 12 <meta http-equiv="content-type" content="text/html; charset=utf-8"/> 13 <meta name="application-name" content="ImageMagick"/> 14 <meta name="description" content="ImageMagick is a software suite to create, edit, compose, or convert bitmap images. It can read and write images in a variety of formats (over 200) including PNG, JPEG, JPEG-2000, GIF, WebP, Postscript, PDF, and SVG. Use ImageMagick to resize, flip, mirror, rotate, distort, shear and transform images, adjust image colors, apply various special effects, or draw text, lines, polygons, ellipses and Bzier curves."/> 15 <meta name="application-url" content="http://www.imagemagick.org"/> 16 <meta name="generator" content="PHP"/> 17 <meta name="keywords" content="magickcore, c, api, for, imagemagick:, transform, an, image, ImageMagick, PerlMagick, image processing, image, photo, software, Magick++, OpenMP, convert"/> 18 <meta name="rating" content="GENERAL"/> 19 <meta name="robots" content="INDEX, FOLLOW"/> 20 <meta name="generator" content="ImageMagick Studio LLC"/> 21 <meta name="author" content="ImageMagick Studio LLC"/> 22 <meta name="revisit-after" content="2 DAYS"/> 23 <meta name="resource-type" content="document"/> 24 <meta name="copyright" content="Copyright (c) 1999-2016 ImageMagick Studio LLC"/> 25 <meta name="distribution" content="Global"/> 26 <meta name="magick-serial" content="P131-S030410-R485315270133-P82224-A6668-G1245-1"/> 27 <meta name="google-site-verification" content="_bMOCDpkx9ZAzBwb2kF3PRHbfUUdFj2uO8Jd1AXArz4" /> 28 <link rel="icon" href="../images/wand.png"/> 29 <link rel="shortcut icon" href="../images/wand.ico"/> 30 <link rel="stylesheet" type="text/css" href="http://fonts.googleapis.com/css?family=Roboto:900,400,400italic,700,700italic,300,300italic|Open+Sans:300italic,400italic,700italic,300,400,600,700"> 31 <link rel="stylesheet" href="../css/magick.html"/> 32 </head> 33 <body> 34 <div class="main"> 35 <div class="magick-masthead"> 36 <div class="container"> 37 <script async="async" src="http://localhost/pagead/js/adsbygoogle.js"></script> <ins class="adsbygoogle" 38 style="display:block" 39 data-ad-client="ca-pub-3129977114552745" 40 data-ad-slot="6345125851" 41 data-ad-format="auto"></ins> 42 <script> 43 (adsbygoogle = window.adsbygoogle || []).push({}); 44 </script> 45 <nav class="magick-nav"> 46 <a class="magick-nav-item " href="../index.html">Home</a> 47 <a class="magick-nav-item " href="../binary-releases.html">Download</a> 48 <a class="magick-nav-item " href="../command-line-tools.html">Tools</a> 49 <a class="magick-nav-item " href="../command-line-processing.html">Command-line</a> 50 <a class="magick-nav-item " href="../resources.html">Resources</a> 51 <a class="magick-nav-item " href="api.html">Develop</a> 52 <a class="magick-nav-item " href="http://www.imagemagick.org/script/search.php">Search</a> 53 <a class="magick-nav-item pull-right" href="https://www.imagemagick.org/discourse-server/">Community</a> 54 </nav> 55 </div> 56 </div> 57 <div class="container"> 58 <div class="magick-header"> 59 <p class="text-center"><a href="transform.html#AutoOrientImage">AutoOrientImage</a> • <a href="transform.html#ChopImage">ChopImage</a> • <a href="transform.html#CropImage">CropImage</a> • <a href="transform.html#CropImageToTiles">CropImageToTiles</a> • <a href="transform.html#ExcerptImage">ExcerptImage</a> • <a href="transform.html#ExtentImage">ExtentImage</a> • <a href="transform.html#FlipImage">FlipImage</a> • <a href="transform.html#FlopImage">FlopImage</a> • <a href="transform.html#RollImage">RollImage</a> • <a href="transform.html#ShaveImage">ShaveImage</a> • <a href="transform.html#SpliceImage">SpliceImage</a> • <a href="transform.html#TransformImage">TransformImage</a> • <a href="transform.html#TransposeImage">TransposeImage</a> • <a href="transform.html#TransverseImage">TransverseImage</a> • <a href="transform.html#TrimImage">TrimImage</a></p> 60 61 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="AutoOrientImage">AutoOrientImage</a></h2> 62 63 <p>AutoOrientImage() adjusts an image so that its orientation is suitable for viewing (i.e. top-left orientation).</p> 64 65 <p>The format of the AutoOrientImage method is:</p> 66 67 <pre class="text"> 68 Image *AutoOrientImage(const Image *image, 69 const OrientationType orientation,ExceptionInfo *exception) 70 </pre> 71 72 <p>A description of each parameter follows:</p> 73 74 <dd> 75 </dd> 76 77 <dd> </dd> 78 <dl class="dl-horizontal"> 79 <dt>image</dt> 80 <dd>The image. </dd> 81 82 <dd> </dd> 83 <dt>orientation</dt> 84 <dd>Current image orientation. </dd> 85 86 <dd> </dd> 87 <dt>exception</dt> 88 <dd>Return any errors or warnings in this structure. </dd> 89 90 <dd> </dd> 91 </dl> 92 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="ChopImage">ChopImage</a></h2> 93 94 <p>ChopImage() removes a region of an image and collapses the image to occupy the removed portion.</p> 95 96 <p>The format of the ChopImage method is:</p> 97 98 <pre class="text"> 99 Image *ChopImage(const Image *image,const RectangleInfo *chop_info) 100 ExceptionInfo *exception) 101 </pre> 102 103 <p>A description of each parameter follows:</p> 104 105 <dd> 106 </dd> 107 108 <dd> </dd> 109 <dl class="dl-horizontal"> 110 <dt>image</dt> 111 <dd>the image. </dd> 112 113 <dd> </dd> 114 <dt>chop_info</dt> 115 <dd>Define the region of the image to chop. </dd> 116 117 <dd> </dd> 118 <dt>exception</dt> 119 <dd>return any errors or warnings in this structure. </dd> 120 121 <dd> </dd> 122 </dl> 123 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="CropImage">CropImage</a></h2> 124 125 <p>CropImage() extracts a region of the image starting at the offset defined by geometry. Region must be fully defined, and no special handling of geometry flags is performed.</p> 126 127 <p>The format of the CropImage method is:</p> 128 129 <pre class="text"> 130 Image *CropImage(const Image *image,const RectangleInfo *geometry, 131 ExceptionInfo *exception) 132 </pre> 133 134 <p>A description of each parameter follows:</p> 135 136 <dd> 137 </dd> 138 139 <dd> </dd> 140 <dl class="dl-horizontal"> 141 <dt>image</dt> 142 <dd>the image. </dd> 143 144 <dd> </dd> 145 <dt>geometry</dt> 146 <dd>Define the region of the image to crop with members x, y, width, and height. </dd> 147 148 <dd> </dd> 149 <dt>exception</dt> 150 <dd>return any errors or warnings in this structure. </dd> 151 152 <dd> </dd> 153 </dl> 154 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="CropImageToTiles">CropImageToTiles</a></h2> 155 156 <p>CropImageToTiles() crops a single image, into a possible list of tiles. This may include a single sub-region of the image. This basically applies all the normal geometry flags for Crop.</p> 157 158 <p>Image *CropImageToTiles(const Image *image, const RectangleInfo *crop_geometry, ExceptionInfo *exception)</p> 159 160 <p>A description of each parameter follows:</p> 161 162 <dd> 163 </dd> 164 165 <dd> </dd> 166 <dl class="dl-horizontal"> 167 <dt>image</dt> 168 <dd>the image The transformed image is returned as this parameter. </dd> 169 170 <dd> </dd> 171 <dt>crop_geometry</dt> 172 <dd>A crop geometry string. </dd> 173 174 <dd> </dd> 175 <dt>exception</dt> 176 <dd>return any errors or warnings in this structure. </dd> 177 178 <dd> </dd> 179 </dl> 180 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="ExcerptImage">ExcerptImage</a></h2> 181 182 <p>ExcerptImage() returns a excerpt of the image as defined by the geometry.</p> 183 184 <p>The format of the ExcerptImage method is:</p> 185 186 <pre class="text"> 187 Image *ExcerptImage(const Image *image,const RectangleInfo *geometry, 188 ExceptionInfo *exception) 189 </pre> 190 191 <p>A description of each parameter follows:</p> 192 193 <dd> 194 </dd> 195 196 <dd> </dd> 197 <dl class="dl-horizontal"> 198 <dt>image</dt> 199 <dd>the image. </dd> 200 201 <dd> </dd> 202 <dt>geometry</dt> 203 <dd>Define the region of the image to extend with members x, y, width, and height. </dd> 204 205 <dd> </dd> 206 <dt>exception</dt> 207 <dd>return any errors or warnings in this structure. </dd> 208 209 <dd> </dd> 210 </dl> 211 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="ExtentImage">ExtentImage</a></h2> 212 213 <p>ExtentImage() extends the image as defined by the geometry, gravity, and image background color. Set the (x,y) offset of the geometry to move the original image relative to the extended image.</p> 214 215 <p>The format of the ExtentImage method is:</p> 216 217 <pre class="text"> 218 Image *ExtentImage(const Image *image,const RectangleInfo *geometry, 219 ExceptionInfo *exception) 220 </pre> 221 222 <p>A description of each parameter follows:</p> 223 224 <dd> 225 </dd> 226 227 <dd> </dd> 228 <dl class="dl-horizontal"> 229 <dt>image</dt> 230 <dd>the image. </dd> 231 232 <dd> </dd> 233 <dt>geometry</dt> 234 <dd>Define the region of the image to extend with members x, y, width, and height. </dd> 235 236 <dd> </dd> 237 <dt>exception</dt> 238 <dd>return any errors or warnings in this structure. </dd> 239 240 <dd> </dd> 241 </dl> 242 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="FlipImage">FlipImage</a></h2> 243 244 <p>FlipImage() creates a vertical mirror image by reflecting the pixels around the central x-axis.</p> 245 246 <p>The format of the FlipImage method is:</p> 247 248 <pre class="text"> 249 Image *FlipImage(const Image *image,ExceptionInfo *exception) 250 </pre> 251 252 <p>A description of each parameter follows:</p> 253 254 <dd> 255 </dd> 256 257 <dd> </dd> 258 <dl class="dl-horizontal"> 259 <dt>image</dt> 260 <dd>the image. </dd> 261 262 <dd> </dd> 263 <dt>exception</dt> 264 <dd>return any errors or warnings in this structure. </dd> 265 266 <dd> </dd> 267 </dl> 268 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="FlopImage">FlopImage</a></h2> 269 270 <p>FlopImage() creates a horizontal mirror image by reflecting the pixels around the central y-axis.</p> 271 272 <p>The format of the FlopImage method is:</p> 273 274 <pre class="text"> 275 Image *FlopImage(const Image *image,ExceptionInfo *exception) 276 </pre> 277 278 <p>A description of each parameter follows:</p> 279 280 <dd> 281 </dd> 282 283 <dd> </dd> 284 <dl class="dl-horizontal"> 285 <dt>image</dt> 286 <dd>the image. </dd> 287 288 <dd> </dd> 289 <dt>exception</dt> 290 <dd>return any errors or warnings in this structure. </dd> 291 292 <dd> </dd> 293 </dl> 294 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="RollImage">RollImage</a></h2> 295 296 <p>RollImage() offsets an image as defined by x_offset and y_offset.</p> 297 298 <p>The format of the RollImage method is:</p> 299 300 <pre class="text"> 301 Image *RollImage(const Image *image,const ssize_t x_offset, 302 const ssize_t y_offset,ExceptionInfo *exception) 303 </pre> 304 305 <p>A description of each parameter follows:</p> 306 307 <dd> 308 </dd> 309 310 <dd> </dd> 311 <dl class="dl-horizontal"> 312 <dt>image</dt> 313 <dd>the image. </dd> 314 315 <dd> </dd> 316 <dt>x_offset</dt> 317 <dd>the number of columns to roll in the horizontal direction. </dd> 318 319 <dd> </dd> 320 <dt>y_offset</dt> 321 <dd>the number of rows to roll in the vertical direction. </dd> 322 323 <dd> </dd> 324 <dt>exception</dt> 325 <dd>return any errors or warnings in this structure. </dd> 326 327 <dd> </dd> 328 </dl> 329 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="ShaveImage">ShaveImage</a></h2> 330 331 <p>ShaveImage() shaves pixels from the image edges. It allocates the memory necessary for the new Image structure and returns a pointer to the new image.</p> 332 333 <p>The format of the ShaveImage method is:</p> 334 335 <pre class="text"> 336 Image *ShaveImage(const Image *image,const RectangleInfo *shave_info, 337 ExceptionInfo *exception) 338 </pre> 339 340 <p>A description of each parameter follows:</p> 341 342 <dd> 343 </dd> 344 345 <dd> </dd> 346 <dl class="dl-horizontal"> 347 <dt>shave_image</dt> 348 <dd>Method ShaveImage returns a pointer to the shaved image. A null image is returned if there is a memory shortage or if the image width or height is zero. </dd> 349 350 <dd> </dd> 351 <dt>image</dt> 352 <dd>the image. </dd> 353 354 <dd> </dd> 355 <dt>shave_info</dt> 356 <dd>Specifies a pointer to a RectangleInfo which defines the region of the image to crop. </dd> 357 358 <dd> </dd> 359 <dt>exception</dt> 360 <dd>return any errors or warnings in this structure. </dd> 361 362 <dd> </dd> 363 </dl> 364 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="SpliceImage">SpliceImage</a></h2> 365 366 <p>SpliceImage() splices a solid color into the image as defined by the geometry.</p> 367 368 <p>The format of the SpliceImage method is:</p> 369 370 <pre class="text"> 371 Image *SpliceImage(const Image *image,const RectangleInfo *geometry, 372 ExceptionInfo *exception) 373 </pre> 374 375 <p>A description of each parameter follows:</p> 376 377 <dd> 378 </dd> 379 380 <dd> </dd> 381 <dl class="dl-horizontal"> 382 <dt>image</dt> 383 <dd>the image. </dd> 384 385 <dd> </dd> 386 <dt>geometry</dt> 387 <dd>Define the region of the image to splice with members x, y, width, and height. </dd> 388 389 <dd> </dd> 390 <dt>exception</dt> 391 <dd>return any errors or warnings in this structure. </dd> 392 393 <dd> </dd> 394 </dl> 395 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="TransformImage">TransformImage</a></h2> 396 397 <p>TransformImage() is a convenience method that behaves like ResizeImage() or CropImage() but accepts scaling and/or cropping information as a region geometry specification. If the operation fails, the original image handle is left as is.</p> 398 399 <p>This should only be used for single images.</p> 400 401 <p>This function destroys what it assumes to be a single image list. If the input image is part of a larger list, all other images in that list will be simply 'lost', not destroyed.</p> 402 403 <p>Also if the crop generates a list of images only the first image is resized. And finally if the crop succeeds and the resize failed, you will get a cropped image, as well as a 'false' or 'failed' report.</p> 404 405 <p>This function and should probably be deprecated in favor of direct calls to CropImageToTiles() or ResizeImage(), as appropriate.</p> 406 407 <p>The format of the TransformImage method is:</p> 408 409 <pre class="text"> 410 MagickBooleanType TransformImage(Image **image,const char *crop_geometry, 411 const char *image_geometry,ExceptionInfo *exception) 412 </pre> 413 414 <p>A description of each parameter follows:</p> 415 416 <dd> 417 </dd> 418 419 <dd> </dd> 420 <dl class="dl-horizontal"> 421 <dt>image</dt> 422 <dd>the image The transformed image is returned as this parameter. </dd> 423 424 <dd> </dd> 425 <dt>crop_geometry</dt> 426 <dd>A crop geometry string. This geometry defines a subregion of the image to crop. </dd> 427 428 <dd> </dd> 429 <dt>image_geometry</dt> 430 <dd>An image geometry string. This geometry defines the final size of the image. </dd> 431 432 <dd> </dd> 433 <dt>exception</dt> 434 <dd>return any errors or warnings in this structure. </dd> 435 436 <dd> </dd> 437 </dl> 438 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="TransposeImage">TransposeImage</a></h2> 439 440 <p>TransposeImage() creates a horizontal mirror image by reflecting the pixels around the central y-axis while rotating them by 90 degrees.</p> 441 442 <p>The format of the TransposeImage method is:</p> 443 444 <pre class="text"> 445 Image *TransposeImage(const Image *image,ExceptionInfo *exception) 446 </pre> 447 448 <p>A description of each parameter follows:</p> 449 450 <dd> 451 </dd> 452 453 <dd> </dd> 454 <dl class="dl-horizontal"> 455 <dt>image</dt> 456 <dd>the image. </dd> 457 458 <dd> </dd> 459 <dt>exception</dt> 460 <dd>return any errors or warnings in this structure. </dd> 461 462 <dd> </dd> 463 </dl> 464 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="TransverseImage">TransverseImage</a></h2> 465 466 <p>TransverseImage() creates a vertical mirror image by reflecting the pixels around the central x-axis while rotating them by 270 degrees.</p> 467 468 <p>The format of the TransverseImage method is:</p> 469 470 <pre class="text"> 471 Image *TransverseImage(const Image *image,ExceptionInfo *exception) 472 </pre> 473 474 <p>A description of each parameter follows:</p> 475 476 <dd> 477 </dd> 478 479 <dd> </dd> 480 <dl class="dl-horizontal"> 481 <dt>image</dt> 482 <dd>the image. </dd> 483 484 <dd> </dd> 485 <dt>exception</dt> 486 <dd>return any errors or warnings in this structure. </dd> 487 488 <dd> </dd> 489 </dl> 490 <h2><a href="http://www.imagemagick.org/api/MagickCore/transform_8c.html" id="TrimImage">TrimImage</a></h2> 491 492 <p>TrimImage() trims pixels from the image edges. It allocates the memory necessary for the new Image structure and returns a pointer to the new image.</p> 493 494 <p>The format of the TrimImage method is:</p> 495 496 <pre class="text"> 497 Image *TrimImage(const Image *image,ExceptionInfo *exception) 498 </pre> 499 500 <p>A description of each parameter follows:</p> 501 502 <dd> 503 </dd> 504 505 <dd> </dd> 506 <dl class="dl-horizontal"> 507 <dt>image</dt> 508 <dd>the image. </dd> 509 510 <dd> </dd> 511 <dt>exception</dt> 512 <dd>return any errors or warnings in this structure. </dd> 513 514 <dd> </dd> 515 </dl> 516 </div> 517 <footer class="magick-footer"> 518 <p><a href="../support.html">Donate</a> 519 <a href="../sitemap.html">Sitemap</a> 520 <a href="../links.html">Related</a> 521 <a href="../architecture.html">Architecture</a> 522 </p> 523 <p><a href="transform.html#">Back to top</a> 524 <a href="http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x89AB63D48277377A">Public Key</a> 525 <a href="http://www.imagemagick.org/script/contact.php">Contact Us</a></p> 526 <p><small> 1999-2016 ImageMagick Studio LLC</small></p> 527 </footer> 528 </div><!-- /.container --> 529 530 <script src="https://localhost/ajax/libs/jquery/1.11.3/jquery.min.js"></script> 531 <script src="../js/magick.html"></script> 532 </div> 533 </body> 534 </html> 535