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We blur the image with a Gaussian operator of the given radius and standard deviation (sigma). For reasonable results, radius should be larger than sigma. Use a radius of 0 and AdaptiveBlurImage() selects a suitable radius for you.</p> 60 61 <p>The format of the AdaptiveBlurImage method is:</p> 62 63 <pre class="text"> 64 Image *AdaptiveBlurImage(const Image *image,const double radius, 65 const double sigma,ExceptionInfo *exception) 66 </pre> 67 68 <p>A description of each parameter follows:</p> 69 70 <dd> 71 </dd> 72 73 <dd> </dd> 74 <dl class="dl-horizontal"> 75 <dt>image</dt> 76 <dd>the image. </dd> 77 78 <dd> </dd> 79 <dt>radius</dt> 80 <dd>the radius of the Gaussian, in pixels, not counting the center pixel. </dd> 81 82 <dd> </dd> 83 <dt>sigma</dt> 84 <dd>the standard deviation of the Laplacian, in pixels. </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://nextgen.imagemagick.org/api/MagickCore/effect_8c.html" id="AdaptiveSharpenImage">AdaptiveSharpenImage</a></h2> 93 94 <p>AdaptiveSharpenImage() adaptively sharpens the image by sharpening more intensely near image edges and less intensely far from edges. We sharpen the image with a Gaussian operator of the given radius and standard deviation (sigma). For reasonable results, radius should be larger than sigma. Use a radius of 0 and AdaptiveSharpenImage() selects a suitable radius for you.</p> 95 96 <p>The format of the AdaptiveSharpenImage method is:</p> 97 98 <pre class="text"> 99 Image *AdaptiveSharpenImage(const Image *image,const double radius, 100 const double sigma,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>radius</dt> 115 <dd>the radius of the Gaussian, in pixels, not counting the center pixel. </dd> 116 117 <dd> </dd> 118 <dt>sigma</dt> 119 <dd>the standard deviation of the Laplacian, in pixels. </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="http://nextgen.imagemagick.org/api/MagickCore/effect_8c.html" id="BlurImage">BlurImage</a></h2> 128 129 <p>BlurImage() blurs an image. We convolve the image with a Gaussian operator of the given radius and standard deviation (sigma). For reasonable results, the radius should be larger than sigma. Use a radius of 0 and BlurImage() selects a suitable radius for you.</p> 130 131 <p>The format of the BlurImage method is:</p> 132 133 <pre class="text"> 134 Image *BlurImage(const Image *image,const double radius, 135 const double sigma,ExceptionInfo *exception) 136 </pre> 137 138 <p>A description of each parameter follows:</p> 139 140 <dd> 141 </dd> 142 143 <dd> </dd> 144 <dl class="dl-horizontal"> 145 <dt>image</dt> 146 <dd>the image. </dd> 147 148 <dd> </dd> 149 <dt>radius</dt> 150 <dd>the radius of the Gaussian, in pixels, not counting the center pixel. </dd> 151 152 <dd> </dd> 153 <dt>sigma</dt> 154 <dd>the standard deviation of the Gaussian, in pixels. </dd> 155 156 <dd> </dd> 157 <dt>exception</dt> 158 <dd>return any errors or warnings in this structure. </dd> 159 160 <dd> </dd> 161 </dl> 162 <h2><a href="http://nextgen.imagemagick.org/api/MagickCore/effect_8c.html" id="ConvolveImage">ConvolveImage</a></h2> 163 164 <p>ConvolveImage() applies a custom convolution kernel to the image.</p> 165 166 <p>The format of the ConvolveImage method is:</p> 167 168 <pre class="text"> 169 Image *ConvolveImage(const Image *image,const KernelInfo *kernel, 170 ExceptionInfo *exception) 171 </pre> 172 173 <p>A description of each parameter follows:</p> 174 175 <dd> 176 </dd> 177 178 <dd> </dd> 179 <dl class="dl-horizontal"> 180 <dt>image</dt> 181 <dd>the image. </dd> 182 183 <dd> </dd> 184 <dt>kernel</dt> 185 <dd>the filtering kernel. </dd> 186 187 <dd> </dd> 188 <dt>exception</dt> 189 <dd>return any errors or warnings in this structure. </dd> 190 191 <dd> </dd> 192 </dl> 193 <h2><a href="http://nextgen.imagemagick.org/api/MagickCore/effect_8c.html" id="DespeckleImage">DespeckleImage</a></h2> 194 195 <p>DespeckleImage() reduces the speckle noise in an image while perserving the edges of the original image. A speckle removing filter uses a complementary hulling technique (raising pixels that are darker than their surrounding neighbors, then complementarily lowering pixels that are brighter than their surrounding neighbors) to reduce the speckle index of that image (reference Crimmins speckle removal).</p> 196 197 <p>The format of the DespeckleImage method is:</p> 198 199 <pre class="text"> 200 Image *DespeckleImage(const Image *image,ExceptionInfo *exception) 201 </pre> 202 203 <p>A description of each parameter follows:</p> 204 205 <dd> 206 </dd> 207 208 <dd> </dd> 209 <dl class="dl-horizontal"> 210 <dt>image</dt> 211 <dd>the image. </dd> 212 213 <dd> </dd> 214 <dt>exception</dt> 215 <dd>return any errors or warnings in this structure. </dd> 216 217 <dd> </dd> 218 </dl> 219 <h2><a href="http://nextgen.imagemagick.org/api/MagickCore/effect_8c.html" id="EdgeImage">EdgeImage</a></h2> 220 221 <p>EdgeImage() finds edges in an image. Radius defines the radius of the convolution filter. Use a radius of 0 and EdgeImage() selects a suitable radius for you.</p> 222 223 <p>The format of the EdgeImage method is:</p> 224 225 <pre class="text"> 226 Image *EdgeImage(const Image *image,const double radius, 227 ExceptionInfo *exception) 228 </pre> 229 230 <p>A description of each parameter follows:</p> 231 232 <dd> 233 </dd> 234 235 <dd> </dd> 236 <dl class="dl-horizontal"> 237 <dt>image</dt> 238 <dd>the image. </dd> 239 240 <dd> </dd> 241 <dt>radius</dt> 242 <dd>the radius of the pixel neighborhood. </dd> 243 244 <dd> </dd> 245 <dt>exception</dt> 246 <dd>return any errors or warnings in this structure. </dd> 247 248 <dd> </dd> 249 </dl> 250 <h2><a href="http://nextgen.imagemagick.org/api/MagickCore/effect_8c.html" id="EmbossImage">EmbossImage</a></h2> 251 252 <p>EmbossImage() returns a grayscale image with a three-dimensional effect. We convolve the image with a Gaussian operator of the given radius and standard deviation (sigma). For reasonable results, radius should be larger than sigma. Use a radius of 0 and Emboss() selects a suitable radius for you.</p> 253 254 <p>The format of the EmbossImage method is:</p> 255 256 <pre class="text"> 257 Image *EmbossImage(const Image *image,const double radius, 258 const double sigma,ExceptionInfo *exception) 259 </pre> 260 261 <p>A description of each parameter follows:</p> 262 263 <dd> 264 </dd> 265 266 <dd> </dd> 267 <dl class="dl-horizontal"> 268 <dt>image</dt> 269 <dd>the image. </dd> 270 271 <dd> </dd> 272 <dt>radius</dt> 273 <dd>the radius of the pixel neighborhood. </dd> 274 275 <dd> </dd> 276 <dt>sigma</dt> 277 <dd>the standard deviation of the Gaussian, in pixels. </dd> 278 279 <dd> </dd> 280 <dt>exception</dt> 281 <dd>return any errors or warnings in this structure. </dd> 282 283 <dd> </dd> 284 </dl> 285 <h2><a href="http://nextgen.imagemagick.org/api/MagickCore/effect_8c.html" id="GaussianBlurImage">GaussianBlurImage</a></h2> 286 287 <p>GaussianBlurImage() blurs an image. We convolve the image with a Gaussian operator of the given radius and standard deviation (sigma). For reasonable results, the radius should be larger than sigma. Use a radius of 0 and GaussianBlurImage() selects a suitable radius for you</p> 288 289 <p>The format of the GaussianBlurImage method is:</p> 290 291 <pre class="text"> 292 Image *GaussianBlurImage(const Image *image,onst double radius, 293 const double sigma,ExceptionInfo *exception) 294 </pre> 295 296 <p>A description of each parameter follows:</p> 297 298 <dd> 299 </dd> 300 301 <dd> </dd> 302 <dl class="dl-horizontal"> 303 <dt>image</dt> 304 <dd>the image. </dd> 305 306 <dd> </dd> 307 <dt>radius</dt> 308 <dd>the radius of the Gaussian, in pixels, not counting the center pixel. </dd> 309 310 <dd> </dd> 311 <dt>sigma</dt> 312 <dd>the standard deviation of the Gaussian, in pixels. </dd> 313 314 <dd> </dd> 315 <dt>exception</dt> 316 <dd>return any errors or warnings in this structure. </dd> 317 318 <dd> </dd> 319 </dl> 320 <h2><a href="http://nextgen.imagemagick.org/api/MagickCore/effect_8c.html" id="KuwaharaImage">KuwaharaImage</a></h2> 321 322 <p>KuwaharaImage() is an edge preserving noise reduction filter.</p> 323 324 <p>The format of the KuwaharaImage method is:</p> 325 326 <pre class="text"> 327 Image *KuwaharaImage(const Image *image,const double radius, 328 const double sigma,ExceptionInfo *exception) 329 </pre> 330 331 <p>A description of each parameter follows:</p> 332 333 <dd> 334 </dd> 335 336 <dd> </dd> 337 <dl class="dl-horizontal"> 338 <dt>image</dt> 339 <dd>the image. </dd> 340 341 <dd> </dd> 342 <dt>radius</dt> 343 <dd>the square window radius. </dd> 344 345 <dd> </dd> 346 <dt>sigma</dt> 347 <dd>the standard deviation of the Gaussian, in pixels. </dd> 348 349 <dd> </dd> 350 <dt>exception</dt> 351 <dd>return any errors or warnings in this structure. </dd> 352 353 <dd> </dd> 354 </dl> 355 <h2><a href="http://nextgen.imagemagick.org/api/MagickCore/effect_8c.html" id="MotionBlurImage">MotionBlurImage</a></h2> 356 357 <p>MotionBlurImage() simulates motion blur. We convolve the image with a Gaussian operator of the given radius and standard deviation (sigma). For reasonable results, radius should be larger than sigma. Use a radius of 0 and MotionBlurImage() selects a suitable radius for you. Angle gives the angle of the blurring motion.</p> 358 359 <p>Andrew Protano contributed this effect.</p> 360 361 <p>The format of the MotionBlurImage method is:</p> 362 363 <pre class="text"> 364 Image *MotionBlurImage(const Image *image,const double radius, 365 const double sigma,const double angle,ExceptionInfo *exception) 366 </pre> 367 368 <p>A description of each parameter follows:</p> 369 370 <dd> 371 </dd> 372 373 <dd> </dd> 374 <dl class="dl-horizontal"> 375 <dt>image</dt> 376 <dd>the image. </dd> 377 378 <dd> </dd> 379 <dt>radius</dt> 380 <dd>the radius of the Gaussian, in pixels, not counting the center pixel. </dd> 381 382 <dd> </dd> 383 <dt>sigma</dt> 384 <dd>the standard deviation of the Gaussian, in pixels. </dd> 385 386 <dd> </dd> 387 <dt>angle</dt> 388 <dd>Apply the effect along this angle. </dd> 389 390 <dd> </dd> 391 <dt>exception</dt> 392 <dd>return any errors or warnings in this structure. </dd> 393 394 <dd> </dd> 395 </dl> 396 <h2><a href="http://nextgen.imagemagick.org/api/MagickCore/effect_8c.html" id="PreviewImage">PreviewImage</a></h2> 397 398 <p>PreviewImage() tiles 9 thumbnails of the specified image with an image processing operation applied with varying parameters. This may be helpful pin-pointing an appropriate parameter for a particular image processing operation.</p> 399 400 <p>The format of the PreviewImages method is:</p> 401 402 <pre class="text"> 403 Image *PreviewImages(const Image *image,const PreviewType preview, 404 ExceptionInfo *exception) 405 </pre> 406 407 <p>A description of each parameter follows:</p> 408 409 <dd> 410 </dd> 411 412 <dd> </dd> 413 <dl class="dl-horizontal"> 414 <dt>image</dt> 415 <dd>the image. </dd> 416 417 <dd> </dd> 418 <dt>preview</dt> 419 <dd>the image processing operation. </dd> 420 421 <dd> </dd> 422 <dt>exception</dt> 423 <dd>return any errors or warnings in this structure. </dd> 424 425 <dd> </dd> 426 </dl> 427 <h2><a href="http://nextgen.imagemagick.org/api/MagickCore/effect_8c.html" id="RotationalBlurImage">RotationalBlurImage</a></h2> 428 429 <p>RotationalBlurImage() applies a radial blur to the image.</p> 430 431 <p>Andrew Protano contributed this effect.</p> 432 433 <p>The format of the RotationalBlurImage method is:</p> 434 435 <pre class="text"> 436 Image *RotationalBlurImage(const Image *image,const double angle, 437 ExceptionInfo *exception) 438 </pre> 439 440 <p>A description of each parameter follows:</p> 441 442 <dd> 443 </dd> 444 445 <dd> </dd> 446 <dl class="dl-horizontal"> 447 <dt>image</dt> 448 <dd>the image. </dd> 449 450 <dd> </dd> 451 <dt>angle</dt> 452 <dd>the angle of the radial blur. </dd> 453 454 <dd> </dd> 455 <dt>blur</dt> 456 <dd>the blur. </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://nextgen.imagemagick.org/api/MagickCore/effect_8c.html" id="SelectiveBlurImage">SelectiveBlurImage</a></h2> 465 466 <p>SelectiveBlurImage() selectively blur pixels within a contrast threshold. It is similar to the unsharpen mask that sharpens everything with contrast above a certain threshold.</p> 467 468 <p>The format of the SelectiveBlurImage method is:</p> 469 470 <pre class="text"> 471 Image *SelectiveBlurImage(const Image *image,const double radius, 472 const double sigma,const double threshold,ExceptionInfo *exception) 473 </pre> 474 475 <p>A description of each parameter follows:</p> 476 477 <dd> 478 </dd> 479 480 <dd> </dd> 481 <dl class="dl-horizontal"> 482 <dt>image</dt> 483 <dd>the image. </dd> 484 485 <dd> </dd> 486 <dt>radius</dt> 487 <dd>the radius of the Gaussian, in pixels, not counting the center pixel. </dd> 488 489 <dd> </dd> 490 <dt>sigma</dt> 491 <dd>the standard deviation of the Gaussian, in pixels. </dd> 492 493 <dd> </dd> 494 <dt>threshold</dt> 495 <dd>only pixels within this contrast threshold are included in the blur operation. </dd> 496 497 <dd> </dd> 498 <dt>exception</dt> 499 <dd>return any errors or warnings in this structure. </dd> 500 501 <dd> </dd> 502 </dl> 503 <h2><a href="http://nextgen.imagemagick.org/api/MagickCore/effect_8c.html" id="ShadeImage">ShadeImage</a></h2> 504 505 <p>ShadeImage() shines a distant light on an image to create a three-dimensional effect. You control the positioning of the light with azimuth and elevation; azimuth is measured in degrees off the x axis and elevation is measured in pixels above the Z axis.</p> 506 507 <p>The format of the ShadeImage method is:</p> 508 509 <pre class="text"> 510 Image *ShadeImage(const Image *image,const MagickBooleanType gray, 511 const double azimuth,const double elevation,ExceptionInfo *exception) 512 </pre> 513 514 <p>A description of each parameter follows:</p> 515 516 <dd> 517 </dd> 518 519 <dd> </dd> 520 <dl class="dl-horizontal"> 521 <dt>image</dt> 522 <dd>the image. </dd> 523 524 <dd> </dd> 525 <dt>gray</dt> 526 <dd>A value other than zero shades the intensity of each pixel. </dd> 527 528 <dd> </dd> 529 <dt>azimuth, elevation</dt> 530 <dd> Define the light source direction. </dd> 531 532 <dd> </dd> 533 <dt>exception</dt> 534 <dd>return any errors or warnings in this structure. </dd> 535 536 <dd> </dd> 537 </dl> 538 <h2><a href="http://nextgen.imagemagick.org/api/MagickCore/effect_8c.html" id="SharpenImage">SharpenImage</a></h2> 539 540 <p>SharpenImage() sharpens the image. We convolve the image with a Gaussian operator of the given radius and standard deviation (sigma). For reasonable results, radius should be larger than sigma. Use a radius of 0 and SharpenImage() selects a suitable radius for you.</p> 541 542 <p>Using a separable kernel would be faster, but the negative weights cancel out on the corners of the kernel producing often undesirable ringing in the filtered result; this can be avoided by using a 2D gaussian shaped image sharpening kernel instead.</p> 543 544 <p>The format of the SharpenImage method is:</p> 545 546 <pre class="text"> 547 Image *SharpenImage(const Image *image,const double radius, 548 const double sigma,ExceptionInfo *exception) 549 </pre> 550 551 <p>A description of each parameter follows:</p> 552 553 <dd> 554 </dd> 555 556 <dd> </dd> 557 <dl class="dl-horizontal"> 558 <dt>image</dt> 559 <dd>the image. </dd> 560 561 <dd> </dd> 562 <dt>radius</dt> 563 <dd>the radius of the Gaussian, in pixels, not counting the center pixel. </dd> 564 565 <dd> </dd> 566 <dt>sigma</dt> 567 <dd>the standard deviation of the Laplacian, in pixels. </dd> 568 569 <dd> </dd> 570 <dt>exception</dt> 571 <dd>return any errors or warnings in this structure. </dd> 572 573 <dd> </dd> 574 </dl> 575 <h2><a href="http://nextgen.imagemagick.org/api/MagickCore/effect_8c.html" id="SpreadImage">SpreadImage</a></h2> 576 577 <p>SpreadImage() is a special effects method that randomly displaces each pixel in a square area defined by the radius parameter.</p> 578 579 <p>The format of the SpreadImage method is:</p> 580 581 <pre class="text"> 582 Image *SpreadImage(const Image *image, 583 const PixelInterpolateMethod method,const double radius, 584 ExceptionInfo *exception) 585 </pre> 586 587 <p>A description of each parameter follows:</p> 588 589 <dd> 590 </dd> 591 592 <dd> </dd> 593 <dl class="dl-horizontal"> 594 <dt>image</dt> 595 <dd>the image. </dd> 596 597 <dd> </dd> 598 <dt>method</dt> 599 <dd> intepolation method. </dd> 600 601 <dd> </dd> 602 <dt>radius</dt> 603 <dd> choose a random pixel in a neighborhood of this extent. </dd> 604 605 <dd> </dd> 606 <dt>exception</dt> 607 <dd>return any errors or warnings in this structure. </dd> 608 609 <dd> </dd> 610 </dl> 611 <h2><a href="http://nextgen.imagemagick.org/api/MagickCore/effect_8c.html" id="UnsharpMaskImage">UnsharpMaskImage</a></h2> 612 613 <p>UnsharpMaskImage() sharpens one or more image channels. We convolve the image with a Gaussian operator of the given radius and standard deviation (sigma). For reasonable results, radius should be larger than sigma. Use a radius of 0 and UnsharpMaskImage() selects a suitable radius for you.</p> 614 615 <p>The format of the UnsharpMaskImage method is:</p> 616 617 <pre class="text"> 618 Image *UnsharpMaskImage(const Image *image,const double radius, 619 const double sigma,const double amount,const double threshold, 620 ExceptionInfo *exception) 621 </pre> 622 623 <p>A description of each parameter follows:</p> 624 625 <dd> 626 </dd> 627 628 <dd> </dd> 629 <dl class="dl-horizontal"> 630 <dt>image</dt> 631 <dd>the image. </dd> 632 633 <dd> </dd> 634 <dt>radius</dt> 635 <dd>the radius of the Gaussian, in pixels, not counting the center pixel. </dd> 636 637 <dd> </dd> 638 <dt>sigma</dt> 639 <dd>the standard deviation of the Gaussian, in pixels. </dd> 640 641 <dd> </dd> 642 <dt>gain</dt> 643 <dd>the percentage of the difference between the original and the blur image that is added back into the original. </dd> 644 645 <dd> </dd> 646 <dt>threshold</dt> 647 <dd>the threshold in pixels needed to apply the diffence gain. </dd> 648 649 <dd> </dd> 650 <dt>exception</dt> 651 <dd>return any errors or warnings in this structure. </dd> 652 653 <dd> </dd> 654 </dl> 655 </div> 656 <footer class="magick-footer"> 657 <p><a href="../script/support.php">Donate</a> 658 <a href="../script/sitemap.php">Sitemap</a> 659 <a href="../script/links.php">Related</a> 660 <a href="../script/architecture.php">Architecture</a> 661 </p> 662 <p><a href="effect.php#">Back to top</a> 663 <a href="http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x89AB63D48277377A">Public Key</a> 664 <a href="../script/contact.php">Contact Us</a></p> 665 <p><small> 1999-2016 ImageMagick Studio LLC</small></p> 666 </footer> 667 </div><!-- /.container --> 668 669 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script> 670 <script src="http://nextgen.imagemagick.org/js/magick.php"></script> 671 </div> 672 </body> 673 </html> 674
