1 2 3 4 5 <!DOCTYPE html> 6 <html lang="en"> 7 <head> 8 <title>ImageMagick: Command-line Tools: Magick</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. 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See <a href="command-line-processing.html">Command Line Processing</a> for advice on how to structure your <code>convert</code> command or see below for example usages of the command.</p> 60 61 <p>We list a few examples of the <code>magick</code> command here to illustrate its usefulness and ease of use. To get started, lets convert an image in the JPEG format to PNG:</p> 62 63 <pre> 64 magick rose.jpg rose.png 65 </pre> 66 67 <p>Next, we reduce the image size before it is written to the PNG format:</p> 68 69 <pre> 70 magick rose.jpg -resize 50% rose.png 71 </pre> 72 73 <ul> 74 <a href="../images/rose.jpg"> 75 <img src="../images/rose.jpg" width="70" height="46" alt="rose" /> 76 </a> 77 <img style="margin-top:13px; margin-bottom:13px;" src="../images/right.gif" width="20" height="20" alt="==>" /> 78 <a href="../images/rose.png"> 79 <img style="margin-top:11px; margin-bottom:12px;" src="../images/rose.png" width="35" height="23" alt="rose" /> 80 </a> 81 </ul> 82 83 <p>You can combine multiple image-processing operations to produce complex results:</p> 84 85 <pre> 86 magick -size 320x85 canvas:none -font Bookman-DemiItalic -pointsize 72 \ 87 -draw "text 25,60 \'Magick\'" -channel RGBA -blur 0x6 -fill darkred -stroke magenta \ 88 -draw "text 20,55 \'Magick\'" fuzzy-magick.png 89 </pre> 90 91 <ul> 92 <a href="../images/fuzzy-magick.png"><img src="../images/fuzzy-magick.png" width="320" height="85" alt="fuzzy-magick" /></a> 93 </ul> 94 95 <p>or here we resize an image with improved quality:</p> 96 97 <pre> 98 magick input.png -colorspace RGB +sigmoidal-contrast 11.6933 \ 99 -define filter:filter=Sinc -define filter:window=Jinc -define filter:lobes=3 \ 100 -resize 400% -sigmoidal-contrast 11.6933 -colorspace sRGB output.png'); 101 </pre> 102 103 <p>Utilize other command-line <a href="command-line-tools.html">tools</a> from the <code>magick</code> tool. To invoke this functionality, simply create a symbolic link to the <code>magick</code> tool or specify the tool you want to use as the first argument. These two methods are equivalent:</p> 104 105 <pre> 106 ln -s magick convert 107 convert rose.jpg rose.png 108 magick convert rose.jpg rose.png 109 </pre> 110 111 <p>You can find additional examples of using <code>magick</code> in <a href="http://www.imagemagick.org/Usage/">Examples of ImageMagick Usage</a>.</p> 112 113 <h2 class="magick-header"><a id="options"></a>Option Summary</h2> 114 115 <p>The <code>magick</code> command recognizes these options. Click on an option to get more details about how that option works.</p> 116 117 <div class="table-responsive"> 118 <table class="table table-condensed table-striped"> 119 <tr> 120 <td><a href="command-line-options.html#adaptive-blur">-adaptive-blur <var>geometry</var></a></td> 121 <td>adaptively blur pixels; decrease effect near edges</td> 122 </tr> 123 124 <tr> 125 <td><a href="command-line-options.html#adaptive-resize">-adaptive-resize <var>geometry</var></a></td> 126 <td>adaptively resize image with data dependent triangulation.</td> 127 </tr> 128 129 <tr> 130 <td><a href="command-line-options.html#adaptive-sharpen">-adaptive-sharpen <var>geometry</var></a></td> 131 <td>adaptively sharpen pixels; increase effect near edges</td> 132 </tr> 133 134 <tr> 135 <td><a href="command-line-options.html#adjoin">-adjoin</a></td> 136 <td>join images into a single multi-image file</td> 137 </tr> 138 139 <tr> 140 <td><a href="command-line-options.html#affine">-affine <var>matrix</var></a></td> 141 <td>affine transform matrix</td> 142 </tr> 143 144 <tr> 145 <td><a href="command-line-options.html#alpha">-alpha</a></td> 146 <td>on, activate, off, deactivate, set, opaque, copy", 147 transparent, extract, background, or shape the alpha channel</td> 148 </tr> 149 150 <tr> 151 <td><a href="command-line-options.html#annotate">-annotate <var>geometry text</var></a></td> 152 <td>annotate the image with text</td> 153 </tr> 154 155 <tr> 156 <td><a href="command-line-options.html#antialias">-antialias</a></td> 157 <td>remove pixel-aliasing</td> 158 </tr> 159 160 <tr> 161 <td><a href="command-line-options.html#append">-append</a></td> 162 <td>append an image sequence</td> 163 </tr> 164 165 <tr> 166 <td><a href="command-line-options.html#authenticate">-authenticate <var>value</var></a></td> 167 <td>decipher image with this password</td> 168 </tr> 169 170 <tr> 171 <td><a href="command-line-options.html#auto-gamma">-auto-gamma</a></td> 172 <td>automagically adjust gamma level of image</td> 173 </tr> 174 175 <tr> 176 <td><a href="command-line-options.html#auto-level">-auto-level</a></td> 177 <td>automagically adjust color levels of image</td> 178 </tr> 179 180 <tr> 181 <td><a href="command-line-options.html#auto-orient">-auto-orient</a></td> 182 <td>automagically orient image</td> 183 </tr> 184 185 <tr> 186 <td><a href="command-line-options.html#background">-background <var>color</var></a></td> 187 <td>background color</td> 188 </tr> 189 190 <tr> 191 <td><a href="command-line-options.html#bench">-bench <var>iterations</var></a></td> 192 <td>measure performance</td> 193 </tr> 194 195 <tr> 196 <td><a href="command-line-options.html#bias">-bias <var>value</var></a></td> 197 <td>add bias when convolving an image</td> 198 </tr> 199 200 <tr> 201 <td><a href="command-line-options.html#black-threshold">-black-threshold <var>value</var></a></td> 202 <td>force all pixels below the threshold into black</td> 203 </tr> 204 205 <tr> 206 <td><a href="command-line-options.html#blue-primary">-blue-primary <var>point</var></a></td> 207 <td>chromaticity blue primary point</td> 208 </tr> 209 210 <tr> 211 <td><a href="command-line-options.html#blue-shift">-blue-shift <var>factor</var></a></td> 212 <td>simulate a scene at nighttime in the moonlight</td> 213 </tr> 214 215 <tr> 216 <td><a href="command-line-options.html#blur">-blur <var>geometry</var></a></td> 217 <td>reduce image noise and reduce detail levels</td> 218 </tr> 219 220 <tr> 221 <td><a href="command-line-options.html#border">-border <var>geometry</var></a></td> 222 <td>surround image with a border of color</td> 223 </tr> 224 225 <tr> 226 <td><a href="command-line-options.html#bordercolor">-bordercolor <var>color</var></a></td> 227 <td>border color</td> 228 </tr> 229 230 <tr> 231 <td><a href="command-line-options.html#brightness-contrast">-brightness-contrast <var>geometry</var></a></td> 232 <td>improve brightness / contrast of the image</td> 233 </tr> 234 235 <tr> 236 <td><a href="command-line-options.html#canny">-canny <var>geometry</var></a></td> 237 <td>use a multi-stage algorithm to detect a wide range of edges in the image</td> 238 </tr> 239 240 <tr> 241 <td><a href="command-line-options.html#caption">-caption <var>string</var></a></td> 242 <td>assign a caption to an image</td> 243 </tr> 244 245 <tr> 246 <td><a href="command-line-options.html#cdl">-cdl <var>filename</var></a></td> 247 <td>color correct with a color decision list</td> 248 </tr> 249 250 <tr> 251 <td><a href="command-line-options.html#channel">-channel <var>type</var></a></td> 252 <td>apply option to select image channels</td> 253 </tr> 254 255 <tr> 256 <td><a href="command-line-options.html#charcoal">-charcoal <var>radius</var></a></td> 257 <td>simulate a charcoal drawing</td> 258 </tr> 259 260 <tr> 261 <td><a href="command-line-options.html#chop">-chop <var>geometry</var></a></td> 262 <td>remove pixels from the image interior</td> 263 </tr> 264 265 <tr> 266 <td><a href="command-line-options.html#clamp">-clamp</a></td> 267 <td>set each pixel whose value is below zero to zero and any the pixel whose value is above the quantum range to the quantum range (e.g. 65535) otherwise the pixel value remains unchanged.</td> 268 </tr> 269 270 <tr> 271 <td><a href="command-line-options.html#clip">-clip</a></td> 272 <td>clip along the first path from the 8BIM profile</td> 273 </tr> 274 275 <tr> 276 <td><a href="command-line-options.html#clip-mask">-clip-mask</a> <var>filename</var></td> 277 <td>associate clip mask with the image</td> 278 </tr> 279 280 <tr> 281 <td><a href="command-line-options.html#clip-path">-clip-path <var>id</var></a></td> 282 <td>clip along a named path from the 8BIM profile</td> 283 </tr> 284 285 <tr> 286 <td><a href="command-line-options.html#clone">-clone <var>index</var></a></td> 287 <td>clone an image</td> 288 </tr> 289 290 <tr> 291 <td><a href="command-line-options.html#clut">-clut</a></td> 292 <td>apply a color lookup table to the image</td> 293 </tr> 294 295 <tr> 296 <td><a href="command-line-options.html#connected-components">-connected-components <var>connectivity</var></a></td> 297 <td>connected-components uniquely labeled, choose from 4 or 8 way connectivity</td> 298 </tr> 299 300 <tr> 301 <td><a href="command-line-options.html#contrast-stretch">-contrast-stretch <var>geometry</var></a></td> 302 <td>improve the contrast in an image by `stretching' the range of intensity value</td> 303 </tr> 304 305 <tr> 306 <td><a href="command-line-options.html#coalesce">-coalesce</a></td> 307 <td>merge a sequence of images</td> 308 </tr> 309 310 <tr> 311 <td><a href="command-line-options.html#colorize">-colorize <var>value</var></a></td> 312 <td>colorize the image with the fill color</td> 313 </tr> 314 315 <tr> 316 <td><a href="command-line-options.html#color-matrix">-color-matrix <var>matrix</var></a></td> 317 <td>apply color correction to the image.</td> 318 </tr> 319 320 <tr> 321 <td><a href="command-line-options.html#colors">-colors <var>value</var></a></td> 322 <td>preferred number of colors in the image</td> 323 </tr> 324 325 <tr> 326 <td><a href="command-line-options.html#colorspace">-colorspace <var>type</var></a></td> 327 <td>set image colorspace</td> 328 </tr> 329 330 <tr> 331 <td><a href="command-line-options.html#combine">-combine</a></td> 332 <td>combine a sequence of images</td> 333 </tr> 334 335 <tr> 336 <td><a href="command-line-options.html#comment">-comment <var>string</var></a></td> 337 <td>annotate image with comment</td> 338 </tr> 339 340 <tr> 341 <td><a href="command-line-options.html#compare">-compare</a></td> 342 <td>compare image</td> 343 </tr> 344 345 <tr> 346 <td><a href="command-line-options.html#complex">-complex<var>operator</var></a></td> 347 <td>perform complex mathematics on an image sequence</td> 348 </tr> 349 350 <tr> 351 <td><a href="command-line-options.html#compose">-compose <var>operator</var></a></td> 352 <td>set image composite operator</td> 353 </tr> 354 355 <tr> 356 <td><a href="command-line-options.html#composite">-composite</a></td> 357 <td>composite image</td> 358 </tr> 359 360 <tr> 361 <td><a href="command-line-options.html#compress">-compress <var>type</var></a></td> 362 <td>image compression type</td> 363 </tr> 364 365 <tr> 366 <td><a href="command-line-options.html#contrast">-contrast</a></td> 367 <td>enhance or reduce the image contrast</td> 368 </tr> 369 370 <tr> 371 <td><a href="command-line-options.html#convolve">-convolve <var>coefficients</var></a></td> 372 <td>apply a convolution kernel to the image</td> 373 </tr> 374 375 <tr> 376 <td><a href="command-line-options.html#copy">-copy <var>geometry</var> <var>offset</var></a></td> 377 <td>copy pixels from one area of an image to another</td> 378 </tr> 379 380 <tr> 381 <td><a href="command-line-options.html#crop">-crop <var>geometry</var></a></td> 382 <td>crop the image</td> 383 </tr> 384 385 <tr> 386 <td><a href="command-line-options.html#cycle">-cycle <var>amount</var></a></td> 387 <td>cycle the image colormap</td> 388 </tr> 389 390 <tr> 391 <td><a href="command-line-options.html#decipher">-decipher <var>filename</var></a></td> 392 <td>convert cipher pixels to plain</td> 393 </tr> 394 395 <tr> 396 <td><a href="command-line-options.html#debug">-debug <var>events</var></a></td> 397 <td>display copious debugging information</td> 398 </tr> 399 400 <tr> 401 <td><a href="command-line-options.html#define">-define <var>format:option</var></a></td> 402 <td>define one or more image format options</td> 403 </tr> 404 405 <tr> 406 <td><a href="command-line-options.html#deconstruct">-deconstruct</a></td> 407 <td>break down an image sequence into constituent parts</td> 408 </tr> 409 410 <tr> 411 <td><a href="command-line-options.html#delay">-delay <var>value</var></a></td> 412 <td>display the next image after pausing</td> 413 </tr> 414 415 <tr> 416 <td><a href="command-line-options.html#delete">-delete <var>index</var></a></td> 417 <td>delete the image from the image sequence</td> 418 </tr> 419 420 <tr> 421 <td><a href="command-line-options.html#density">-density <var>geometry</var></a></td> 422 <td>horizontal and vertical density of the image</td> 423 </tr> 424 425 <tr> 426 <td><a href="command-line-options.html#depth">-depth <var>value</var></a></td> 427 <td>image depth</td> 428 </tr> 429 430 <tr> 431 <td><a href="command-line-options.html#despeckle">-despeckle</a></td> 432 <td>reduce the speckles within an image</td> 433 </tr> 434 435 <tr> 436 <td><a href="command-line-options.html#direction">-direction <var>type</var></a></td> 437 <td>render text right-to-left or left-to-right</td> 438 </tr> 439 440 <tr> 441 <td><a href="command-line-options.html#display">-display <var>server</var></a></td> 442 <td>get image or font from this X server</td> 443 </tr> 444 445 <tr> 446 <td><a href="command-line-options.html#dispose">-dispose <var>method</var></a></td> 447 <td>layer disposal method</td> 448 </tr> 449 450 <tr> 451 <td><a href="command-line-options.html#distribute-cache">-distribute-cache <var>port</var></a></td> 452 <td>launch a distributed pixel cache server</td> 453 </tr> 454 455 <tr> 456 <td><a href="command-line-options.html#distort">-distort <var>type coefficients</var></a></td> 457 <td>distort image</td> 458 </tr> 459 460 <tr> 461 <td><a href="command-line-options.html#dither">-dither <var>method</var></a></td> 462 <td>apply error diffusion to image</td> 463 </tr> 464 465 <tr> 466 <td><a href="command-line-options.html#draw">-draw <var>string</var></a></td> 467 <td>annotate the image with a graphic primitive</td> 468 </tr> 469 470 <tr> 471 <td><a href="command-line-options.html#duplicate">-duplicate <var>count,indexes</var></a></td> 472 <td>duplicate an image one or more times</td> 473 </tr> 474 475 <tr> 476 <td><a href="command-line-options.html#edge">-edge <var>radius</var></a></td> 477 <td>apply a filter to detect edges in the image</td> 478 </tr> 479 480 <tr> 481 <td><a href="command-line-options.html#emboss">-emboss <var>radius</var></a></td> 482 <td>emboss an image</td> 483 </tr> 484 485 <tr> 486 <td><a href="command-line-options.html#encipher">-encipher <var>filename</var></a></td> 487 <td>convert plain pixels to cipher pixels</td> 488 </tr> 489 490 <tr> 491 <td><a href="command-line-options.html#encoding">-encoding <var>type</var></a></td> 492 <td>text encoding type</td> 493 </tr> 494 495 <tr> 496 <td><a href="command-line-options.html#endian">-endian <var>type</var></a></td> 497 <td>endianness (MSB or LSB) of the image</td> 498 </tr> 499 500 <tr> 501 <td><a href="command-line-options.html#enhance">-enhance</a></td> 502 <td>apply a digital filter to enhance a noisy image</td> 503 </tr> 504 505 <tr> 506 <td><a href="command-line-options.html#equalize">-equalize</a></td> 507 <td>perform histogram equalization to an image</td> 508 </tr> 509 510 <tr> 511 <td><a href="command-line-options.html#evaluate">-evaluate <var>operator value</var></a></td> 512 <td>evaluate an arithmetic, relational, or logical expression</td> 513 </tr> 514 515 <tr> 516 <td><a href="command-line-options.html#evaluate-sequence">-evaluate-sequence <var>operator</var></a></td> 517 <td>evaluate an arithmetic, relational, or logical expression for an image sequence</td> 518 </tr> 519 520 <tr> 521 <td><a href="command-line-options.html#extent">-extent <var>geometry</var></a></td> 522 <td>set the image size</td> 523 </tr> 524 525 <tr> 526 <td><a href="command-line-options.html#extract">-extract <var>geometry</var></a></td> 527 <td>extract area from image</td> 528 </tr> 529 530 <tr> 531 <td><a href="command-line-options.html#family">-family <var>name</var></a></td> 532 <td>render text with this font family</td> 533 </tr> 534 535 <tr> 536 <td><a href="command-line-options.html#features">-features <var>distance</var></a></td> 537 <td>analyze image features (e.g. contract, correlations, etc.).</td> 538 </tr> 539 540 <tr> 541 <td><a href="command-line-options.html#fft">-fft</a></td> 542 <td>implements the discrete Fourier transform (DFT)</td> 543 </tr> 544 545 <tr> 546 <td><a href="command-line-options.html#fill">-fill <var>color</var></a></td> 547 <td>color to use when filling a graphic primitive</td> 548 </tr> 549 550 <tr> 551 <td><a href="command-line-options.html#filter">-filter <var>type</var></a></td> 552 <td>use this filter when resizing an image</td> 553 </tr> 554 555 <tr> 556 <td><a href="command-line-options.html#flatten">-flatten</a></td> 557 <td>flatten a sequence of images</td> 558 </tr> 559 560 <tr> 561 <td><a href="command-line-options.html#flip">-flip</a></td> 562 <td>flip image in the vertical direction</td> 563 </tr> 564 565 <tr> 566 <td><a href="command-line-options.html#floodfill">-floodfill <var>geometry color</var></a></td> 567 <td>floodfill the image with color</td> 568 </tr> 569 570 <tr> 571 <td><a href="command-line-options.html#flop">-flop</a></td> 572 <td>flop image in the horizontal direction</td> 573 </tr> 574 575 <tr> 576 <td><a href="command-line-options.html#font">-font <var>name</var></a></td> 577 <td>render text with this font</td> 578 </tr> 579 580 <tr> 581 <td><a href="command-line-options.html#format_identify_">-format <var>string</var></a></td> 582 <td>output formatted image characteristics</td> 583 </tr> 584 585 <tr> 586 <td><a href="command-line-options.html#frame">-frame <var>geometry</var></a></td> 587 <td>surround image with an ornamental border</td> 588 </tr> 589 590 <tr> 591 <td><a href="command-line-options.html#function">-function <var>name</var></a></td> 592 <td>apply a function to the image</td> 593 </tr> 594 595 <tr> 596 <td><a href="command-line-options.html#fuzz">-fuzz <var>distance</var></a></td> 597 <td>colors within this distance are considered equal</td> 598 </tr> 599 600 <tr> 601 <td><a href="command-line-options.html#fx">-fx <var>expression</var></a></td> 602 <td>apply mathematical expression to an image channel(s)</td> 603 </tr> 604 605 <tr> 606 <td><a href="command-line-options.html#gamma">-gamma <var>value</var></a></td> 607 <td>level of gamma correction</td> 608 </tr> 609 610 <tr> 611 <td><a href="command-line-options.html#gaussian-blur">-gaussian-blur <var>geometry</var></a></td> 612 <td>reduce image noise and reduce detail levels</td> 613 </tr> 614 615 <tr> 616 <td><a href="command-line-options.html#geometry">-geometry <var>geometry</var></a></td> 617 <td>preferred size or location of the image</td> 618 </tr> 619 620 <tr> 621 <td><a href="command-line-options.html#gravity">-gravity <var>type</var></a></td> 622 <td>horizontal and vertical text placement</td> 623 </tr> 624 625 <tr> 626 <td><a href="command-line-options.html#intensity">-grayscale <var>method</var></a></td> 627 <td>convert image to grayscale</td> 628 </tr> 629 630 <tr> 631 <td><a href="command-line-options.html#green-primary">-green-primary <var>point</var></a></td> 632 <td>chromaticity green primary point</td> 633 </tr> 634 635 <tr> 636 <td><a href="command-line-options.html#help">-help</a></td> 637 <td>print program options</td> 638 </tr> 639 640 <tr> 641 <td><a href="command-line-options.html#hough-lines">-hough-lines <var>geometry</var></a></td> 642 <td>identify lines in the image</td> 643 </tr> 644 645 <tr> 646 <td><a href="command-line-options.html#identify">-identify</a></td> 647 <td>identify the format and characteristics of the image</td> 648 </tr> 649 650 <tr> 651 <td><a href="command-line-options.html#ift">-ift</a></td> 652 <td>implements the inverse discrete Fourier transform (DFT)</td> 653 </tr> 654 655 <tr> 656 <td><a href="command-line-options.html#implode">-implode <var>amount</var></a></td> 657 <td>implode image pixels about the center</td> 658 </tr> 659 660 <tr> 661 <td><a href="command-line-options.html#insert">-insert <var>index</var></a></td> 662 <td>insert last image into the image sequence</td> 663 </tr> 664 665 <tr> 666 <td><a href="command-line-options.html#intensity">-intensity <var>method</var></a></td> 667 <td>method to generate an intensity value from a pixel</td> 668 </tr> 669 670 <tr> 671 <td><a href="command-line-options.html#intent">-intent <var>type</var></a></td> 672 <td>type of rendering intent when managing the image color</td> 673 </tr> 674 675 <tr> 676 <td><a href="command-line-options.html#interlace">-interlace <var>type</var></a></td> 677 <td>type of image interlacing scheme</td> 678 </tr> 679 680 <tr> 681 <td><a href="command-line-options.html#interline-spacing">-interline-spacing <var>value</var></a></td> 682 <td>the space between two text lines</td> 683 </tr> 684 685 <tr> 686 <td><a href="command-line-options.html#interpolate">-interpolate <var>method</var></a></td> 687 <td>pixel color interpolation method</td> 688 </tr> 689 690 <tr> 691 <td><a href="command-line-options.html#interword-spacing">-interword-spacing <var>value</var></a></td> 692 <td>the space between two words</td> 693 </tr> 694 695 <tr> 696 <td><a href="command-line-options.html#kerning">-kerning <var>value</var></a></td> 697 <td>the space between two characters</td> 698 </tr> 699 700 <tr> 701 <td><a href="command-line-options.html#kuwahara">-kuwahara <var>geometry</var></a></td> 702 <td>edge preserving noise reduction filter</td> 703 </tr> 704 705 <tr> 706 <td><a href="command-line-options.html#label">-label <var>string</var></a></td> 707 <td>assign a label to an image</td> 708 </tr> 709 710 <tr> 711 <td><a href="command-line-options.html#lat">-lat <var>geometry</var></a></td> 712 <td>local adaptive thresholding</td> 713 </tr> 714 715 <tr> 716 <td><a href="command-line-options.html#layers">-layers <var>method</var></a></td> 717 <td>optimize or compare image layers</td> 718 </tr> 719 720 <tr> 721 <td><a href="command-line-options.html#level">-level <var>value</var></a></td> 722 <td>adjust the level of image contrast</td> 723 </tr> 724 725 <tr> 726 <td><a href="command-line-options.html#limit">-limit <var>type value</var></a></td> 727 <td>pixel cache resource limit</td> 728 </tr> 729 730 <tr> 731 <td><a href="command-line-options.html#linear-stretch">-linear-stretch <var>geometry</var></a></td> 732 <td>linear with saturation histogram stretch</td> 733 </tr> 734 735 <tr> 736 <td><a href="command-line-options.html#liquid-rescale">-liquid-rescale <var>geometry</var></a></td> 737 <td>rescale image with seam-carving</td> 738 </tr> 739 740 <tr> 741 <td><a href="command-line-options.html#list">-list <var>type</var></a></td> 742 <td>Color, Configure, Delegate, Format, Magic, Module, Resource, or Type</td> 743 </tr> 744 745 <tr> 746 <td><a href="command-line-options.html#log">-log <var>format</var></a></td> 747 <td>format of debugging information</td> 748 </tr> 749 750 <tr> 751 <td><a href="command-line-options.html#loop">-loop <var>iterations</var></a></td> 752 <td>add Netscape loop extension to your GIF animation</td> 753 </tr> 754 755 <tr> 756 <td><a href="command-line-options.html#mask">-mask <var>filename</var></a></td> 757 <td>associate a mask with the image</td> 758 </tr> 759 760 <tr> 761 <td><a href="command-line-options.html#mattecolor">-mattecolor <var>color</var></a></td> 762 <td>frame color</td> 763 </tr> 764 765 <tr> 766 <td><a href="command-line-options.html#median">-median <var>radius</var></a></td> 767 <td>apply a median filter to the image</td> 768 </tr> 769 770 <tr> 771 <td><a href="command-line-options.html#mean-shift">-mean-shift <var>geometry</var></a></td> 772 <td>delineate arbitrarily shaped clusters in the image</td> 773 </tr> 774 775 <tr> 776 <td><a href="command-line-options.html#metric">-metric <var>type</var></a></td> 777 <td>measure differences between images with this metric</td> 778 </tr> 779 780 <tr> 781 <td><a href="command-line-options.html#mode">-mode <var>radius</var></a></td> 782 <td>make each pixel the 'predominant color' of the neighborhood</td> 783 </tr> 784 785 <tr> 786 <td><a href="command-line-options.html#modulate">-modulate <var>value</var></a></td> 787 <td>vary the brightness, saturation, and hue</td> 788 </tr> 789 790 <tr> 791 <td><a href="command-line-options.html#moments">-moments</a></td> 792 <td>display image moments.</td> 793 </tr> 794 795 <tr> 796 <td><a href="command-line-options.html#monitor">-monitor</a></td> 797 <td>monitor progress</td> 798 </tr> 799 800 <tr> 801 <td><a href="command-line-options.html#monochrome">-monochrome</a></td> 802 <td>transform image to black and white</td> 803 </tr> 804 805 <tr> 806 <td><a href="command-line-options.html#morph">-morph <var>value</var></a></td> 807 <td>morph an image sequence</td> 808 </tr> 809 810 <tr> 811 <td><a href="command-line-options.html#morphology">-morphology <var>method</var></a> <var>kernel</var></td> 812 <td>apply a morphology method to the image</td> 813 </tr> 814 815 <tr> 816 <td><a href="command-line-options.html#motion-blur">-motion-blur <var>geometry</var></a></td> 817 <td>simulate motion blur</td> 818 </tr> 819 820 <tr> 821 <td><a href="command-line-options.html#negate">-negate</a></td> 822 <td>replace each pixel with its complementary color </td> 823 </tr> 824 825 <tr> 826 <td><a href="command-line-options.html#noise">-noise <var>radius</var></a></td> 827 <td>add or reduce noise in an image</td> 828 </tr> 829 830 <tr> 831 <td><a href="command-line-options.html#normalize">-normalize</a></td> 832 <td>transform image to span the full range of colors</td> 833 </tr> 834 835 <tr> 836 <td><a href="command-line-options.html#opaque">-opaque <var>color</var></a></td> 837 <td>change this color to the fill color</td> 838 </tr> 839 840 <tr> 841 <td><a href="command-line-options.html#ordered-dither">-ordered-dither <var>NxN</var></a></td> 842 <td>ordered dither the image</td> 843 </tr> 844 845 <tr> 846 <td><a href="command-line-options.html#orient">-orient <var>type</var></a></td> 847 <td>image orientation</td> 848 </tr> 849 850 <tr> 851 <td><a href="command-line-options.html#page">-page <var>geometry</var></a></td> 852 <td>size and location of an image canvas (setting)</td> 853 </tr> 854 855 <tr> 856 <td><a href="command-line-options.html#paint">-paint <var>radius</var></a></td> 857 <td>simulate an oil painting</td> 858 </tr> 859 860 <tr> 861 <td><a href="command-line-options.html#perceptible">-perceptible</a></td> 862 <td>set each pixel whose value is less than |<var>epsilon</var>| to <var>-epsilon</var> or <var>epsilon</var> (whichever is closer) otherwise the pixel value remains unchanged.</td> 863 </tr> 864 865 <tr> 866 <td><a href="command-line-options.html#ping">-ping</a></td> 867 <td>efficiently determine image attributes</td> 868 </tr> 869 870 <tr> 871 <td><a href="command-line-options.html#pointsize">-pointsize <var>value</var></a></td> 872 <td>font point size</td> 873 </tr> 874 875 <tr> 876 <td><a href="command-line-options.html#polaroid">-polaroid <var>angle</var></a></td> 877 <td>simulate a Polaroid picture</td> 878 </tr> 879 880 <tr> 881 <td><a href="command-line-options.html#poly">-poly <var>terms</var></a></td> 882 <td>build a polynomial from the image sequence and the corresponding terms (coefficients and degree pairs).</td> 883 </tr> 884 885 <tr> 886 <td><a href="command-line-options.html#posterize">-posterize <var>levels</var></a></td> 887 <td>reduce the image to a limited number of color levels</td> 888 </tr> 889 890 <tr> 891 <td><a href="command-line-options.html#precision">-precision <var>value</var></a></td> 892 <td>set the maximum number of significant digits to be printed</td> 893 </tr> 894 895 <tr> 896 <td><a href="command-line-options.html#preview">-preview <var>type</var></a></td> 897 <td>image preview type</td> 898 </tr> 899 900 <tr> 901 <td><a href="command-line-options.html#print">-print <var>string</var></a></td> 902 <td>interpret string and print to console</td> 903 </tr> 904 905 <tr> 906 <td><a href="command-line-options.html#process">-process <var>image-filter</var></a></td> 907 <td>process the image with a custom image filter</td> 908 </tr> 909 910 <tr> 911 <td><a href="command-line-options.html#profile">-profile <var>filename</var></a></td> 912 <td>add, delete, or apply an image profile</td> 913 </tr> 914 915 <tr> 916 <td><a href="command-line-options.html#quality">-quality <var>value</var></a></td> 917 <td>JPEG/MIFF/PNG compression level</td> 918 </tr> 919 920 <tr> 921 <td><a href="command-line-options.html#quantize">-quantize <var>colorspace</var></a></td> 922 <td>reduce image colors in this colorspace</td> 923 </tr> 924 925 <tr> 926 <td><a href="command-line-options.html#quiet">-quiet</a></td> 927 <td>suppress all warning messages</td> 928 </tr> 929 930 <tr> 931 <td><a href="command-line-options.html#radial-blur">-radial-blur <var>angle</var></a></td> 932 <td>radial blur the image</td> 933 </tr> 934 935 <tr> 936 <td><a href="command-line-options.html#raise">-raise <var>value</var></a></td> 937 <td>lighten/darken image edges to create a 3-D effect</td> 938 </tr> 939 940 <tr> 941 <td><a href="command-line-options.html#random-threshold">-random-threshold <var>low,high</var></a></td> 942 <td>random threshold the image</td> 943 </tr> 944 945 <tr> 946 <td><a href="command-line-options.html#red-primary">-red-primary <var>point</var></a></td> 947 <td>chromaticity red primary point</td> 948 </tr> 949 950 <tr> 951 <td><a href="command-line-options.html#regard-warnings">-regard-warnings</a></td> 952 <td>pay attention to warning messages.</td> 953 </tr> 954 955 <tr> 956 <td><a href="command-line-options.html#region">-region <var>geometry</var></a></td> 957 <td>apply options to a portion of the image</td> 958 </tr> 959 960 <tr> 961 <td><a href="command-line-options.html#remap">-remap <var>filename</var></a></td> 962 <td>transform image colors to match this set of colors</td> 963 </tr> 964 965 <tr> 966 <td><a href="command-line-options.html#render">-render</a></td> 967 <td>render vector graphics</td> 968 </tr> 969 970 <tr> 971 <td><a href="command-line-options.html#repage">-repage <var>geometry</var></a></td> 972 <td>size and location of an image canvas</td> 973 </tr> 974 975 <tr> 976 <td><a href="command-line-options.html#resample">-resample <var>geometry</var></a></td> 977 <td>change the resolution of an image</td> 978 </tr> 979 980 <tr> 981 <td><a href="command-line-options.html#resize">-resize <var>geometry</var></a></td> 982 <td>resize the image</td> 983 </tr> 984 985 <tr> 986 <td><a href="command-line-options.html#respect-parentheses">-respect-parentheses</a></td> 987 <td>settings remain in effect until parenthesis boundary.</td> 988 </tr> 989 990 <tr> 991 <td><a href="command-line-options.html#roll">-roll <var>geometry</var></a></td> 992 <td>roll an image vertically or horizontally</td> 993 </tr> 994 995 <tr> 996 <td><a href="command-line-options.html#rotate">-rotate <var>degrees</var></a></td> 997 <td>apply Paeth rotation to the image</td> 998 </tr> 999 1000 <tr> 1001 <td><a href="command-line-options.html#sample">-sample <var>geometry</var></a></td> 1002 <td>scale image with pixel sampling</td> 1003 </tr> 1004 1005 <tr> 1006 <td><a href="command-line-options.html#sampling-factor">-sampling-factor <var>geometry</var></a></td> 1007 <td>horizontal and vertical sampling factor</td> 1008 </tr> 1009 1010 <tr> 1011 <td><a href="command-line-options.html#scale">-scale <var>geometry</var></a></td> 1012 <td>scale the image</td> 1013 </tr> 1014 1015 <tr> 1016 <td><a href="command-line-options.html#scene">-scene <var>value</var></a></td> 1017 <td>image scene number</td> 1018 </tr> 1019 1020 <tr> 1021 <td><a href="command-line-options.html#seed">-seed <var>value</var></a></td> 1022 <td>seed a new sequence of pseudo-random numbers</td> 1023 </tr> 1024 1025 <tr> 1026 <td><a href="command-line-options.html#segment">-segment <var>values</var></a></td> 1027 <td>segment an image</td> 1028 </tr> 1029 1030 <tr> 1031 <td><a href="command-line-options.html#threshold">-selective-blur <var>geometry</var></a></td> 1032 <td>selectively blur pixels within a contrast threshold</td> 1033 </tr> 1034 1035 <tr> 1036 <td><a href="command-line-options.html#separate">-separate</a></td> 1037 <td>separate an image channel into a grayscale image</td> 1038 </tr> 1039 1040 <tr> 1041 <td><a href="command-line-options.html#sepia-tone">-sepia-tone <var>threshold</var></a></td> 1042 <td>simulate a sepia-toned photo</td> 1043 </tr> 1044 1045 <tr> 1046 <td><a href="command-line-options.html#set">-set <var>attribute value</var></a></td> 1047 <td>set an image attribute</td> 1048 </tr> 1049 1050 <tr> 1051 <td><a href="command-line-options.html#shade">-shade <var>degrees</var></a></td> 1052 <td>shade the image using a distant light source</td> 1053 </tr> 1054 1055 <tr> 1056 <td><a href="command-line-options.html#shadow">-shadow <var>geometry</var></a></td> 1057 <td>simulate an image shadow</td> 1058 </tr> 1059 1060 <tr> 1061 <td><a href="command-line-options.html#sharpen">-sharpen <var>geometry</var></a></td> 1062 <td>sharpen the image</td> 1063 </tr> 1064 1065 <tr> 1066 <td><a href="command-line-options.html#shave">-shave <var>geometry</var></a></td> 1067 <td>shave pixels from the image edges</td> 1068 </tr> 1069 1070 <tr> 1071 <td><a href="command-line-options.html#shear">-shear <var>geometry</var></a></td> 1072 <td>slide one edge of the image along the X or Y axis</td> 1073 </tr> 1074 1075 <tr> 1076 <td><a href="command-line-options.html#sigmoidal">-sigmoidal-contrast <var>geometry</var></a></td> 1077 <td>increase the contrast without saturating highlights or shadows</td> 1078 </tr> 1079 1080 <tr> 1081 <td><a href="command-line-options.html#smush">-smush <var>offset</var></a></td> 1082 <td>smush an image sequence together</td> 1083 </tr> 1084 1085 <tr> 1086 <td><a href="command-line-options.html#size">-size <var>geometry</var></a></td> 1087 <td>width and height of image</td> 1088 </tr> 1089 1090 <tr> 1091 <td><a href="command-line-options.html#sketch">-sketch <var>geometry</var></a></td> 1092 <td>simulate a pencil sketch</td> 1093 </tr> 1094 1095 <tr> 1096 <td><a href="command-line-options.html#solarize">-solarize <var>threshold</var></a></td> 1097 <td>negate all pixels above the threshold level</td> 1098 </tr> 1099 1100 <tr> 1101 <td><a href="command-line-options.html#splice">-splice <var>geometry</var></a></td> 1102 <td>splice the background color into the image</td> 1103 </tr> 1104 1105 <tr> 1106 <td><a href="command-line-options.html#spread">-spread <var>radius</var></a></td> 1107 <td>displace image pixels by a random amount</td> 1108 </tr> 1109 1110 <tr> 1111 <td><a href="command-line-options.html#statistic">-statistic <var>type</var> <var>geometry</var></a></td> 1112 <td>replace each pixel with corresponding statistic from the neighborhood</td> 1113 </tr> 1114 1115 <tr> 1116 <td><a href="command-line-options.html#strip">-strip</a></td> 1117 <td>strip image of all profiles and comments</td> 1118 </tr> 1119 1120 <tr> 1121 <td><a href="command-line-options.html#stroke">-stroke <var>color</var></a></td> 1122 <td>graphic primitive stroke color</td> 1123 </tr> 1124 1125 <tr> 1126 <td><a href="command-line-options.html#strokewidth">-strokewidth <var>value</var></a></td> 1127 <td>graphic primitive stroke width</td> 1128 </tr> 1129 1130 <tr> 1131 <td><a href="command-line-options.html#stretch">-stretch <var>type</var></a></td> 1132 <td>render text with this font stretch</td> 1133 </tr> 1134 1135 <tr> 1136 <td><a href="command-line-options.html#style">-style <var>type</var></a></td> 1137 <td>render text with this font style</td> 1138 </tr> 1139 1140 <tr> 1141 <td><a href="command-line-options.html#swap">-swap <var>indexes</var></a></td> 1142 <td>swap two images in the image sequence</td> 1143 </tr> 1144 1145 <tr> 1146 <td><a href="command-line-options.html#swirl">-swirl <var>degrees</var></a></td> 1147 <td>swirl image pixels about the center</td> 1148 </tr> 1149 1150 <tr> 1151 <td><a href="command-line-options.html#synchronize">-synchronize</a></td> 1152 <td>synchronize image to storage device</td> 1153 </tr> 1154 1155 <tr> 1156 <td><a href="command-line-options.html#taint">-taint</a></td> 1157 <td>mark the image as modified</td> 1158 </tr> 1159 1160 <tr> 1161 <td><a href="command-line-options.html#texture">-texture <var>filename</var></a></td> 1162 <td>name of texture to tile onto the image background</td> 1163 </tr> 1164 1165 <tr> 1166 <td><a href="command-line-options.html#threshold">-threshold <var>value</var></a></td> 1167 <td>threshold the image</td> 1168 </tr> 1169 1170 <tr> 1171 <td><a href="command-line-options.html#thumbnail">-thumbnail <var>geometry</var></a></td> 1172 <td>create a thumbnail of the image</td> 1173 </tr> 1174 1175 <tr> 1176 <td><a href="command-line-options.html#tile">-tile <var>filename</var></a></td> 1177 <td>tile image when filling a graphic primitive</td> 1178 </tr> 1179 1180 <tr> 1181 <td><a href="command-line-options.html#tile-offset">-tile-offset <var>geometry</var></a></td> 1182 <td>set the image tile offset</td> 1183 </tr> 1184 1185 <tr> 1186 <td><a href="command-line-options.html#tint">-tint <var>value</var></a></td> 1187 <td>tint the image with the fill color</td> 1188 </tr> 1189 1190 <tr> 1191 <td><a href="command-line-options.html#transform">-transform</a></td> 1192 <td>affine transform image</td> 1193 </tr> 1194 1195 <tr> 1196 <td><a href="command-line-options.html#transparent">-transparent <var>color</var></a></td> 1197 <td>make this color transparent within the image</td> 1198 </tr> 1199 1200 <tr> 1201 <td><a href="command-line-options.html#transparent-color">-transparent-color <var>color</var></a></td> 1202 <td>transparent color</td> 1203 </tr> 1204 1205 <tr> 1206 <td><a href="command-line-options.html#transpose">-transpose</a></td> 1207 <td>flip image in the vertical direction and rotate 90 degrees</td> 1208 </tr> 1209 1210 <tr> 1211 <td><a href="command-line-options.html#transverse">-transverse</a></td> 1212 <td>flop image in the horizontal direction and rotate 270 degrees</td> 1213 </tr> 1214 1215 <tr> 1216 <td><a href="command-line-options.html#treedepth">-treedepth <var>value</var></a></td> 1217 <td>color tree depth</td> 1218 </tr> 1219 1220 <tr> 1221 <td><a href="command-line-options.html#trim">-trim</a></td> 1222 <td>trim image edges</td> 1223 </tr> 1224 1225 <tr> 1226 <td><a href="command-line-options.html#type">-type <var>type</var></a></td> 1227 <td>image type</td> 1228 </tr> 1229 1230 <tr> 1231 <td><a href="command-line-options.html#undercolor">-undercolor <var>color</var></a></td> 1232 <td>annotation bounding box color</td> 1233 </tr> 1234 1235 <tr> 1236 <td><a href="command-line-options.html#unique-colors">-unique-colors</a></td> 1237 <td>discard all but one of any pixel color.</td> 1238 </tr> 1239 1240 <tr> 1241 <td><a href="command-line-options.html#units">-units <var>type</var></a></td> 1242 <td>the units of image resolution</td> 1243 </tr> 1244 1245 <tr> 1246 <td><a href="command-line-options.html#unsharp">-unsharp <var>geometry</var></a></td> 1247 <td>sharpen the image</td> 1248 </tr> 1249 1250 <tr> 1251 <td><a href="command-line-options.html#verbose">-verbose</a></td> 1252 <td>print detailed information about the image</td> 1253 </tr> 1254 1255 <tr> 1256 <td><a href="command-line-options.html#version">-version</a></td> 1257 <td>print version information</td> 1258 </tr> 1259 1260 <tr> 1261 <td><a href="command-line-options.html#view">-view</a></td> 1262 <td>FlashPix viewing transforms</td> 1263 </tr> 1264 1265 <tr> 1266 <td><a href="command-line-options.html#vignette">-vignette <var>geometry</var></a></td> 1267 <td>soften the edges of the image in vignette style</td> 1268 </tr> 1269 1270 <tr> 1271 <td><a href="command-line-options.html#virtual-pixel">-virtual-pixel <var>method</var></a></td> 1272 <td>access method for pixels outside the boundaries of the image</td> 1273 </tr> 1274 1275 <tr> 1276 <td><a href="command-line-options.html#wave">-wave <var>geometry</var></a></td> 1277 <td>alter an image along a sine wave</td> 1278 </tr> 1279 1280 <tr> 1281 <td><a href="command-line-options.html#wavelet">-wavelet-denoise <var>threshold</var></a></td> 1282 <td>removes noise from the image using a wavelet transform</td> 1283 </tr> 1284 1285 <tr> 1286 <td><a href="command-line-options.html#weight">-weight <var>type</var></a></td> 1287 <td>render text with this font weight</td> 1288 </tr> 1289 1290 <tr> 1291 <td><a href="command-line-options.html#white-point">-white-point <var>point</var></a></td> 1292 <td>chromaticity white point</td> 1293 </tr> 1294 1295 <tr> 1296 <td><a href="command-line-options.html#white-threshold">-white-threshold <var>value</var></a></td> 1297 <td>force all pixels above the threshold into white</td> 1298 </tr> 1299 1300 <tr> 1301 <td><a href="command-line-options.html#write">-write <var>filename</var></a></td> 1302 <td>write images to this 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