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See <a href="../www/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> 85 86<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> 87 88<pre class="highlight"><code>magick rose.jpg rose.png 89</code></pre> 90 91<p>Next, we reduce the image size before it is written to the PNG format:</p> 92 93<pre class="highlight"><code>magick rose.jpg -resize 50% rose.png 94</code></pre> 95 96<ul> 97 <a href="../images/rose.jpg"> 98 <img src="../images/rose.jpg" width="70" height="46" alt="rose" /> 99 </a> 100 <img style="margin-top:13px; margin-bottom:13px;" src="../images/right.gif" width="20" height="20" alt="==>" /> 101 <a href="../images/rose.png"> 102 <img style="margin-top:11px; margin-bottom:12px;" src="../images/rose.png" width="35" height="23" alt="rose" /> 103 </a> 104</ul> 105 106<p>You can combine multiple image-processing operations to produce complex results:</p> 107 108<pre class="highlight"><code>magick -size 320x85 canvas:none -font Bookman-DemiItalic -pointsize 72 \ 109 -draw "text 25,60 \'Magick\'" -channel RGBA -blur 0x6 -fill darkred -stroke magenta \ 110 -draw "text 20,55 \'Magick\'" fuzzy-magick.png 111</code></pre> 112 113<ul> 114 <a href="../images/fuzzy-magick.png"><img src="../images/fuzzy-magick.png" width="320" height="85" alt="fuzzy-magick" /></a> 115</ul> 116 117<p>or here we resize an image with improved quality:</p> 118 119<pre class="highlight"><code>magick input.png -colorspace RGB +sigmoidal-contrast 11.6933 \ 120 -define filter:filter=Sinc -define filter:window=Jinc -define filter:lobes=3 \ 121 -resize 400% -sigmoidal-contrast 11.6933 -colorspace sRGB output.png'); 122</code></pre> 123 124<p>Utilize other command-line <a href="../www/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> 125 126<pre class="highlight"><code>ln -s magick convert 127convert rose.jpg rose.png 128magick convert rose.jpg rose.png 129</code></pre> 130 131<p>You can find additional examples of using <code>magick</code> in <a href="../Usage/">Examples of ImageMagick Usage</a>.</p> 132 133<h2><a class="anchor" id="options"></a>Option Summary</h2> 134 135<p>The <code>magick</code> command recognizes these options. Click on an option to get more details about how that option works.</p> 136 137<div class="table-responsive"> 138<table class="table table-sm table-striped"> 139 <tr> 140 <td><a href="../www/command-line-options.html#adaptive-blur">-adaptive-blur <var>geometry</var></a></td> 141 <td>adaptively blur pixels; decrease effect near edges</td> 142 </tr> 143 144 <tr> 145 <td><a href="../www/command-line-options.html#adaptive-resize">-adaptive-resize <var>geometry</var></a></td> 146 <td>adaptively resize image with data dependent triangulation.</td> 147 </tr> 148 149 <tr> 150 <td><a href="../www/command-line-options.html#adaptive-sharpen">-adaptive-sharpen <var>geometry</var></a></td> 151 <td>adaptively sharpen pixels; increase effect near edges</td> 152 </tr> 153 154 <tr> 155 <td><a href="../www/command-line-options.html#adjoin">-adjoin</a></td> 156 <td>join images into a single multi-image file</td> 157 </tr> 158 159 <tr> 160 <td><a href="../www/command-line-options.html#affine">-affine <var>matrix</var></a></td> 161 <td>affine transform matrix</td> 162 </tr> 163 164 <tr> 165 <td><a href="../www/command-line-options.html#alpha">-alpha</a></td> 166 <td>on, activate, off, deactivate, set, opaque, copy", 167transparent, extract, background, or shape the alpha channel</td> 168 </tr> 169 170 <tr> 171 <td><a href="../www/command-line-options.html#annotate">-annotate <var>geometry text</var></a></td> 172 <td>annotate the image with text</td> 173 </tr> 174 175 <tr> 176 <td><a href="../www/command-line-options.html#antialias">-antialias</a></td> 177 <td>remove pixel-aliasing</td> 178 </tr> 179 180 <tr> 181 <td><a href="../www/command-line-options.html#append">-append</a></td> 182 <td>append an image sequence</td> 183 </tr> 184 185 <tr> 186 <td><a href="../www/command-line-options.html#authenticate">-authenticate <var>value</var></a></td> 187 <td>decipher image with this password</td> 188 </tr> 189 190 <tr> 191 <td><a href="../www/command-line-options.html#auto-gamma">-auto-gamma</a></td> 192 <td>automagically adjust gamma level of image</td> 193 </tr> 194 195 <tr> 196 <td><a href="../www/command-line-options.html#auto-level">-auto-level</a></td> 197 <td>automagically adjust color levels of image</td> 198 </tr> 199 200 <tr> 201 <td><a href="../www/command-line-options.html#auto-orient">-auto-orient</a></td> 202 <td>automagically orient image</td> 203 </tr> 204 205 <tr> 206 <td><a href="../www/command-line-options.html#background">-background <var>color</var></a></td> 207 <td>background color</td> 208 </tr> 209 210 <tr> 211 <td><a href="../www/command-line-options.html#bench">-bench <var>iterations</var></a></td> 212 <td>measure performance</td> 213 </tr> 214 215 <tr> 216 <td><a href="../www/command-line-options.html#bias">-bias <var>value</var></a></td> 217 <td>add bias when convolving an image</td> 218 </tr> 219 220 <tr> 221 <td><a href="../www/command-line-options.html#black-threshold">-black-threshold <var>value</var></a></td> 222 <td>force all pixels below the threshold into black</td> 223 </tr> 224 225 <tr> 226 <td><a href="../www/command-line-options.html#blue-primary">-blue-primary <var>point</var></a></td> 227 <td>chromaticity blue primary point</td> 228 </tr> 229 230 <tr> 231 <td><a href="../www/command-line-options.html#blue-shift">-blue-shift <var>factor</var></a></td> 232 <td>simulate a scene at nighttime in the moonlight</td> 233 </tr> 234 235 <tr> 236 <td><a href="../www/command-line-options.html#blur">-blur <var>geometry</var></a></td> 237 <td>reduce image noise and reduce detail levels</td> 238 </tr> 239 240 <tr> 241 <td><a href="../www/command-line-options.html#border">-border <var>geometry</var></a></td> 242 <td>surround image with a border of color</td> 243 </tr> 244 245 <tr> 246 <td><a href="../www/command-line-options.html#bordercolor">-bordercolor <var>color</var></a></td> 247 <td>border color</td> 248 </tr> 249 250 <tr> 251 <td><a href="../www/command-line-options.html#brightness-contrast">-brightness-contrast <var>geometry</var></a></td> 252 <td>improve brightness / contrast of the image</td> 253 </tr> 254 255 <tr> 256 <td><a href="../www/command-line-options.html#canny">-canny <var>geometry</var></a></td> 257 <td>use a multi-stage algorithm to detect a wide range of edges in the image</td> 258 </tr> 259 260 <tr> 261 <td><a href="../www/command-line-options.html#caption">-caption <var>string</var></a></td> 262 <td>assign a caption to an image</td> 263 </tr> 264 265 <tr> 266 <td><a href="../www/command-line-options.html#cdl">-cdl <var>filename</var></a></td> 267 <td>color correct with a color decision list</td> 268 </tr> 269 270 <tr> 271 <td><a href="../www/command-line-options.html#channel">-channel <var>type</var></a></td> 272 <td>apply option to select image channels</td> 273 </tr> 274 275 <tr> 276 <td><a href="../www/command-line-options.html#charcoal">-charcoal <var>radius</var></a></td> 277 <td>simulate a charcoal drawing</td> 278 </tr> 279 280 <tr> 281 <td><a href="../www/command-line-options.html#chop">-chop <var>geometry</var></a></td> 282 <td>remove pixels from the image interior</td> 283 </tr> 284 285 <tr> 286 <td><a href="../www/command-line-options.html#clahe">-clahe <var>geometry</var></a></td> 287 <td>contrast limited adaptive histogram equalization</td> 288 </tr> 289 290 <tr> 291 <td><a href="../www/command-line-options.html#clamp">-clamp</a></td> 292 <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> 293 </tr> 294 295 <tr> 296 <td><a href="../www/command-line-options.html#clip">-clip</a></td> 297 <td>clip along the first path from the 8BIM profile</td> 298 </tr> 299 300 <tr> 301 <td><a href="../www/command-line-options.html#clip-mask">-clip-mask</a> <var>filename</var></td> 302 <td>associate clip mask with the image</td> 303 </tr> 304 305 <tr> 306 <td><a href="../www/command-line-options.html#clip-path">-clip-path <var>id</var></a></td> 307 <td>clip along a named path from the 8BIM profile</td> 308 </tr> 309 310 <tr> 311 <td><a href="../www/command-line-options.html#clone">-clone <var>index</var></a></td> 312 <td>clone an image</td> 313 </tr> 314 315 <tr> 316 <td><a href="../www/command-line-options.html#clut">-clut</a></td> 317 <td>apply a color lookup table to the image</td> 318 </tr> 319 320 <tr> 321 <td><a href="../www/command-line-options.html#connected-components">-connected-components <var>connectivity</var></a></td> 322 <td>connected-components uniquely labeled, choose from 4 or 8 way connectivity</td> 323 </tr> 324 325 <tr> 326 <td><a href="../www/command-line-options.html#contrast-stretch">-contrast-stretch <var>geometry</var></a></td> 327 <td>improve the contrast in an image by `stretching' the range of intensity value</td> 328 </tr> 329 330 <tr> 331 <td><a href="../www/command-line-options.html#coalesce">-coalesce</a></td> 332 <td>merge a sequence of images</td> 333 </tr> 334 335 <tr> 336 <td><a href="../www/command-line-options.html#colorize">-colorize <var>value</var></a></td> 337 <td>colorize the image with the fill color</td> 338 </tr> 339 340 <tr> 341 <td><a href="../www/command-line-options.html#color-matrix">-color-matrix <var>matrix</var></a></td> 342 <td>apply color correction to the image.</td> 343 </tr> 344 345 <tr> 346 <td><a href="../www/command-line-options.html#colors">-colors <var>value</var></a></td> 347 <td>preferred number of colors in the image</td> 348 </tr> 349 350 <tr> 351 <td><a href="../www/command-line-options.html#colorspace">-colorspace <var>type</var></a></td> 352 <td>set image colorspace</td> 353 </tr> 354 355 <tr> 356 <td><a href="../www/command-line-options.html#combine">-combine</a></td> 357 <td>combine a sequence of images</td> 358 </tr> 359 360 <tr> 361 <td><a href="../www/command-line-options.html#comment">-comment <var>string</var></a></td> 362 <td>annotate image with comment</td> 363 </tr> 364 365 <tr> 366 <td><a href="../www/command-line-options.html#compare">-compare</a></td> 367 <td>compare image</td> 368 </tr> 369 370 <tr> 371 <td><a href="../www/command-line-options.html#complex">-complex<var>operator</var></a></td> 372 <td>perform complex mathematics on an image sequence</td> 373 </tr> 374 375 <tr> 376 <td><a href="../www/command-line-options.html#compose">-compose <var>operator</var></a></td> 377 <td>set image composite operator</td> 378 </tr> 379 380 <tr> 381 <td><a href="../www/command-line-options.html#composite">-composite</a></td> 382 <td>composite image</td> 383 </tr> 384 385 <tr> 386 <td><a href="../www/command-line-options.html#compress">-compress <var>type</var></a></td> 387 <td>image compression type</td> 388 </tr> 389 390 <tr> 391 <td><a href="../www/command-line-options.html#contrast">-contrast</a></td> 392 <td>enhance or reduce the image contrast</td> 393 </tr> 394 395 <tr> 396 <td><a href="../www/command-line-options.html#convolve">-convolve <var>coefficients</var></a></td> 397 <td>apply a convolution kernel to the image</td> 398 </tr> 399 400 <tr> 401 <td><a href="../www/command-line-options.html#copy">-copy <var>geometry</var> <var>offset</var></a></td> 402 <td>copy pixels from one area of an image to another</td> 403 </tr> 404 405 <tr> 406 <td><a href="../www/command-line-options.html#crop">-crop <var>geometry</var></a></td> 407 <td>crop the image</td> 408 </tr> 409 410 <tr> 411 <td><a href="../www/command-line-options.html#cycle">-cycle <var>amount</var></a></td> 412 <td>cycle the image colormap</td> 413 </tr> 414 415 <tr> 416 <td><a href="../www/command-line-options.html#decipher">-decipher <var>filename</var></a></td> 417 <td>convert cipher pixels to plain</td> 418 </tr> 419 420 <tr> 421 <td><a href="../www/command-line-options.html#debug">-debug <var>events</var></a></td> 422 <td>display copious debugging information</td> 423 </tr> 424 425 <tr> 426 <td><a href="../www/command-line-options.html#define">-define <var>format:option</var></a></td> 427 <td>define one or more image format options</td> 428 </tr> 429 430 <tr> 431 <td><a href="../www/command-line-options.html#deconstruct">-deconstruct</a></td> 432 <td>break down an image sequence into constituent parts</td> 433 </tr> 434 435 <tr> 436 <td><a href="../www/command-line-options.html#delay">-delay <var>value</var></a></td> 437 <td>display the next image after pausing</td> 438 </tr> 439 440 <tr> 441 <td><a href="../www/command-line-options.html#delete">-delete <var>index</var></a></td> 442 <td>delete the image from the image sequence</td> 443 </tr> 444 445 <tr> 446 <td><a href="../www/command-line-options.html#density">-density <var>geometry</var></a></td> 447 <td>horizontal and vertical density of the image</td> 448 </tr> 449 450 <tr> 451 <td><a href="../www/command-line-options.html#depth">-depth <var>value</var></a></td> 452 <td>image depth</td> 453 </tr> 454 455 <tr> 456 <td><a href="../www/command-line-options.html#despeckle">-despeckle</a></td> 457 <td>reduce the speckles within an image</td> 458 </tr> 459 460 <tr> 461 <td><a href="../www/command-line-options.html#direction">-direction <var>type</var></a></td> 462 <td>render text right-to-left or left-to-right</td> 463 </tr> 464 465 <tr> 466 <td><a href="../www/command-line-options.html#display">-display <var>server</var></a></td> 467 <td>get image or font from this X server</td> 468 </tr> 469 470 <tr> 471 <td><a href="../www/command-line-options.html#dispose">-dispose <var>method</var></a></td> 472 <td>layer disposal method</td> 473 </tr> 474 475 <tr> 476 <td><a href="../www/command-line-options.html#distribute-cache">-distribute-cache <var>port</var></a></td> 477 <td>launch a distributed pixel cache server</td> 478 </tr> 479 480 <tr> 481 <td><a href="../www/command-line-options.html#distort">-distort <var>type coefficients</var></a></td> 482 <td>distort image</td> 483 </tr> 484 485 <tr> 486 <td><a href="../www/command-line-options.html#dither">-dither <var>method</var></a></td> 487 <td>apply error diffusion to image</td> 488 </tr> 489 490 <tr> 491 <td><a href="../www/command-line-options.html#draw">-draw <var>string</var></a></td> 492 <td>annotate the image with a graphic primitive</td> 493 </tr> 494 495 <tr> 496 <td><a href="../www/command-line-options.html#duplicate">-duplicate <var>count,indexes</var></a></td> 497 <td>duplicate an image one or more times</td> 498 </tr> 499 500 <tr> 501 <td><a href="../www/command-line-options.html#edge">-edge <var>radius</var></a></td> 502 <td>apply a filter to detect edges in the image</td> 503 </tr> 504 505 <tr> 506 <td><a href="../www/command-line-options.html#emboss">-emboss <var>radius</var></a></td> 507 <td>emboss an image</td> 508 </tr> 509 510 <tr> 511 <td><a href="../www/command-line-options.html#encipher">-encipher <var>filename</var></a></td> 512 <td>convert plain pixels to cipher pixels</td> 513 </tr> 514 515 <tr> 516 <td><a href="../www/command-line-options.html#encoding">-encoding <var>type</var></a></td> 517 <td>text encoding type</td> 518 </tr> 519 520 <tr> 521 <td><a href="../www/command-line-options.html#endian">-endian <var>type</var></a></td> 522 <td>endianness (MSB or LSB) of the image</td> 523 </tr> 524 525 <tr> 526 <td><a href="../www/command-line-options.html#enhance">-enhance</a></td> 527 <td>apply a digital filter to enhance a noisy image</td> 528 </tr> 529 530 <tr> 531 <td><a href="../www/command-line-options.html#equalize">-equalize</a></td> 532 <td>perform histogram equalization to an image</td> 533 </tr> 534 535 <tr> 536 <td><a href="../www/command-line-options.html#evaluate">-evaluate <var>operator value</var></a></td> 537 <td>evaluate an arithmetic, relational, or logical expression</td> 538 </tr> 539 540 <tr> 541 <td><a href="../www/command-line-options.html#evaluate-sequence">-evaluate-sequence <var>operator</var></a></td> 542 <td>evaluate an arithmetic, relational, or logical expression for an image sequence</td> 543 </tr> 544 545 <tr> 546 <td><a href="../www/command-line-options.html#extent">-extent <var>geometry</var></a></td> 547 <td>set the image size</td> 548 </tr> 549 550 <tr> 551 <td><a href="../www/command-line-options.html#extract">-extract <var>geometry</var></a></td> 552 <td>extract area from image</td> 553 </tr> 554 555 <tr> 556 <td><a href="../www/command-line-options.html#family">-family <var>name</var></a></td> 557 <td>render text with this font family</td> 558 </tr> 559 560 <tr> 561 <td><a href="../www/command-line-options.html#features">-features <var>distance</var></a></td> 562 <td>analyze image features (e.g. contract, correlations, etc.).</td> 563 </tr> 564 565 <tr> 566 <td><a href="../www/command-line-options.html#fft">-fft</a></td> 567 <td>implements the discrete Fourier transform (DFT)</td> 568 </tr> 569 570 <tr> 571 <td><a href="../www/command-line-options.html#fill">-fill <var>color</var></a></td> 572 <td>color to use when filling a graphic primitive</td> 573 </tr> 574 575 <tr> 576 <td><a href="../www/command-line-options.html#filter">-filter <var>type</var></a></td> 577 <td>use this filter when resizing an image</td> 578 </tr> 579 580 <tr> 581 <td><a href="../www/command-line-options.html#flatten">-flatten</a></td> 582 <td>flatten a sequence of images</td> 583 </tr> 584 585 <tr> 586 <td><a href="../www/command-line-options.html#flip">-flip</a></td> 587 <td>flip image in the vertical direction</td> 588 </tr> 589 590 <tr> 591 <td><a href="../www/command-line-options.html#floodfill">-floodfill <var>geometry color</var></a></td> 592 <td>floodfill the image with color</td> 593 </tr> 594 595 <tr> 596 <td><a href="../www/command-line-options.html#flop">-flop</a></td> 597 <td>flop image in the horizontal direction</td> 598 </tr> 599 600 <tr> 601 <td><a href="../www/command-line-options.html#font">-font <var>name</var></a></td> 602 <td>render text with this font</td> 603 </tr> 604 605 <tr> 606 <td><a href="../www/command-line-options.html#format_identify_">-format <var>string</var></a></td> 607 <td>output formatted image characteristics</td> 608 </tr> 609 610 <tr> 611 <td><a href="../www/command-line-options.html#frame">-frame <var>geometry</var></a></td> 612 <td>surround image with an ornamental border</td> 613 </tr> 614 615 <tr> 616 <td><a href="../www/command-line-options.html#function">-function <var>name</var></a></td> 617 <td>apply a function to the image</td> 618 </tr> 619 620 <tr> 621 <td><a href="../www/command-line-options.html#fuzz">-fuzz <var>distance</var></a></td> 622 <td>colors within this distance are considered equal</td> 623 </tr> 624 625 <tr> 626 <td><a href="../www/command-line-options.html#fx">-fx <var>expression</var></a></td> 627 <td>apply mathematical expression to an image channel(s)</td> 628 </tr> 629 630 <tr> 631 <td><a href="../www/command-line-options.html#gamma">-gamma <var>value</var></a></td> 632 <td>level of gamma correction</td> 633 </tr> 634 635 <tr> 636 <td><a href="../www/command-line-options.html#gaussian-blur">-gaussian-blur <var>geometry</var></a></td> 637 <td>reduce image noise and reduce detail levels</td> 638 </tr> 639 640 <tr> 641 <td><a href="../www/command-line-options.html#geometry">-geometry <var>geometry</var></a></td> 642 <td>preferred size or location of the image</td> 643 </tr> 644 645 <tr> 646 <td><a href="../www/command-line-options.html#gravity">-gravity <var>type</var></a></td> 647 <td>horizontal and vertical text placement</td> 648 </tr> 649 650 <tr> 651 <td><a href="../www/command-line-options.html#grayscale">-grayscale <var>method</var></a></td> 652 <td>convert image to grayscale</td> 653 </tr> 654 655 <tr> 656 <td><a href="../www/command-line-options.html#green-primary">-green-primary <var>point</var></a></td> 657 <td>chromaticity green primary point</td> 658 </tr> 659 660 <tr> 661 <td><a href="../www/command-line-options.html#help">-help</a></td> 662 <td>print program options</td> 663 </tr> 664 665 <tr> 666 <td><a href="../www/command-line-options.html#hough-lines">-hough-lines <var>geometry</var></a></td> 667 <td>identify lines in the image</td> 668 </tr> 669 670 <tr> 671 <td><a href="../www/command-line-options.html#identify">-identify</a></td> 672 <td>identify the format and characteristics of the image</td> 673 </tr> 674 675 <tr> 676 <td><a href="../www/command-line-options.html#ift">-ift</a></td> 677 <td>implements the inverse discrete Fourier transform (DFT)</td> 678 </tr> 679 680 <tr> 681 <td><a href="../www/command-line-options.html#implode">-implode <var>amount</var></a></td> 682 <td>implode image pixels about the center</td> 683 </tr> 684 685 <tr> 686 <td><a href="../www/command-line-options.html#insert">-insert <var>index</var></a></td> 687 <td>insert last image into the image sequence</td> 688 </tr> 689 690 <tr> 691 <td><a href="../www/command-line-options.html#intensity">-intensity <var>method</var></a></td> 692 <td>method to generate an intensity value from a pixel</td> 693 </tr> 694 695 <tr> 696 <td><a href="../www/command-line-options.html#intent">-intent <var>type</var></a></td> 697 <td>type of rendering intent when managing the image color</td> 698 </tr> 699 700 <tr> 701 <td><a href="../www/command-line-options.html#interlace">-interlace <var>type</var></a></td> 702 <td>type of image interlacing scheme</td> 703 </tr> 704 705 <tr> 706 <td><a href="../www/command-line-options.html#interline-spacing">-interline-spacing <var>value</var></a></td> 707 <td>the space between two text lines</td> 708 </tr> 709 710 <tr> 711 <td><a href="../www/command-line-options.html#interpolate">-interpolate <var>method</var></a></td> 712 <td>pixel color interpolation method</td> 713 </tr> 714 715 <tr> 716 <td><a href="../www/command-line-options.html#interword-spacing">-interword-spacing <var>value</var></a></td> 717 <td>the space between two words</td> 718 </tr> 719 720 <tr> 721 <td><a href="../www/command-line-options.html#kerning">-kerning <var>value</var></a></td> 722 <td>the space between two characters</td> 723 </tr> 724 725 <tr> 726 <td><a href="../www/command-line-options.html#kuwahara">-kuwahara <var>geometry</var></a></td> 727 <td>edge preserving noise reduction filter</td> 728 </tr> 729 730 <tr> 731 <td><a href="../www/command-line-options.html#label">-label <var>string</var></a></td> 732 <td>assign a label to an image</td> 733 </tr> 734 735 <tr> 736 <td><a href="../www/command-line-options.html#lat">-lat <var>geometry</var></a></td> 737 <td>local adaptive thresholding</td> 738 </tr> 739 740 <tr> 741 <td><a href="../www/command-line-options.html#layers">-layers <var>method</var></a></td> 742 <td>optimize or compare image layers</td> 743 </tr> 744 745 <tr> 746 <td><a href="../www/command-line-options.html#level">-level <var>value</var></a></td> 747 <td>adjust the level of image contrast</td> 748 </tr> 749 750 <tr> 751 <td><a href="../www/command-line-options.html#limit">-limit <var>type value</var></a></td> 752 <td>pixel cache resource limit</td> 753 </tr> 754 755 <tr> 756 <td><a href="../www/command-line-options.html#linear-stretch">-linear-stretch <var>geometry</var></a></td> 757 <td>linear with saturation histogram stretch</td> 758 </tr> 759 760 <tr> 761 <td><a href="../www/command-line-options.html#liquid-rescale">-liquid-rescale <var>geometry</var></a></td> 762 <td>rescale image with seam-carving</td> 763 </tr> 764 765 <tr> 766 <td><a href="../www/command-line-options.html#list">-list <var>type</var></a></td> 767 <td>Color, Configure, Delegate, Format, Magic, Module, Resource, or Type</td> 768 </tr> 769 770 <tr> 771 <td><a href="../www/command-line-options.html#log">-log <var>format</var></a></td> 772 <td>format of debugging information</td> 773 </tr> 774 775 <tr> 776 <td><a href="../www/command-line-options.html#loop">-loop <var>iterations</var></a></td> 777 <td>add Netscape loop extension to your GIF animation</td> 778 </tr> 779 780 <tr> 781 <td><a href="../www/command-line-options.html#mask">-mask <var>filename</var></a></td> 782 <td>associate a mask with the image</td> 783 </tr> 784 785 <tr> 786 <td><a href="../www/command-line-options.html#mattecolor">-mattecolor <var>color</var></a></td> 787 <td>frame color</td> 788 </tr> 789 790 <tr> 791 <td><a href="../www/command-line-options.html#median">-median <var>radius</var></a></td> 792 <td>apply a median filter to the image</td> 793 </tr> 794 795 <tr> 796 <td><a href="../www/command-line-options.html#mean-shift">-mean-shift <var>geometry</var></a></td> 797 <td>delineate arbitrarily shaped clusters in the image</td> 798 </tr> 799 800 <tr> 801 <td><a href="../www/command-line-options.html#metric">-metric <var>type</var></a></td> 802 <td>measure differences between images with this metric</td> 803 </tr> 804 805 <tr> 806 <td><a href="../www/command-line-options.html#mode">-mode <var>radius</var></a></td> 807 <td>make each pixel the 'predominant color' of the neighborhood</td> 808 </tr> 809 810 <tr> 811 <td><a href="../www/command-line-options.html#modulate">-modulate <var>value</var></a></td> 812 <td>vary the brightness, saturation, and hue</td> 813 </tr> 814 815 <tr> 816 <td><a href="../www/command-line-options.html#moments">-moments</a></td> 817 <td>display image moments.</td> 818 </tr> 819 820 <tr> 821 <td><a href="../www/command-line-options.html#monitor">-monitor</a></td> 822 <td>monitor progress</td> 823 </tr> 824 825 <tr> 826 <td><a href="../www/command-line-options.html#monochrome">-monochrome</a></td> 827 <td>transform image to black and white</td> 828 </tr> 829 830 <tr> 831 <td><a href="../www/command-line-options.html#morph">-morph <var>value</var></a></td> 832 <td>morph an image sequence</td> 833 </tr> 834 835 <tr> 836 <td><a href="../www/command-line-options.html#morphology">-morphology <var>method</var></a> <var>kernel</var></td> 837 <td>apply a morphology method to the image</td> 838 </tr> 839 840 <tr> 841 <td><a href="../www/command-line-options.html#motion-blur">-motion-blur <var>geometry</var></a></td> 842 <td>simulate motion blur</td> 843 </tr> 844 845 <tr> 846 <td><a href="../www/command-line-options.html#negate">-negate</a></td> 847 <td>replace each pixel with its complementary color </td> 848 </tr> 849 850 <tr> 851 <td><a href="../www/command-line-options.html#noise">-noise <var>radius</var></a></td> 852 <td>add or reduce noise in an image</td> 853 </tr> 854 855 <tr> 856 <td><a href="../www/command-line-options.html#normalize">-normalize</a></td> 857 <td>transform image to span the full range of colors</td> 858 </tr> 859 860 <tr> 861 <td><a href="../www/command-line-options.html#opaque">-opaque <var>color</var></a></td> 862 <td>change this color to the fill color</td> 863 </tr> 864 865 <tr> 866 <td><a href="../www/command-line-options.html#ordered-dither">-ordered-dither <var>NxN</var></a></td> 867 <td>ordered dither the image</td> 868 </tr> 869 870 <tr> 871 <td><a href="../www/command-line-options.html#orient">-orient <var>type</var></a></td> 872 <td>image orientation</td> 873 </tr> 874 875 <tr> 876 <td><a href="../www/command-line-options.html#page">-page <var>geometry</var></a></td> 877 <td>size and location of an image canvas (setting)</td> 878 </tr> 879 880 <tr> 881 <td><a href="../www/command-line-options.html#paint">-paint <var>radius</var></a></td> 882 <td>simulate an oil painting</td> 883 </tr> 884 885 <tr> 886 <td><a href="../www/command-line-options.html#perceptible">-perceptible</a></td> 887 <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> 888 </tr> 889 890 <tr> 891 <td><a href="../www/command-line-options.html#ping">-ping</a></td> 892 <td>efficiently determine image attributes</td> 893 </tr> 894 895 <tr> 896 <td><a href="../www/command-line-options.html#pointsize">-pointsize <var>value</var></a></td> 897 <td>font point size</td> 898 </tr> 899 900 <tr> 901 <td><a href="../www/command-line-options.html#polaroid">-polaroid <var>angle</var></a></td> 902 <td>simulate a Polaroid picture</td> 903 </tr> 904 905 <tr> 906 <td><a href="../www/command-line-options.html#poly">-poly <var>terms</var></a></td> 907 <td>build a polynomial from the image sequence and the corresponding terms (coefficients and degree pairs).</td> 908 </tr> 909 910 <tr> 911 <td><a href="../www/command-line-options.html#posterize">-posterize <var>levels</var></a></td> 912 <td>reduce the image to a limited number of color levels</td> 913 </tr> 914 915 <tr> 916 <td><a href="../www/command-line-options.html#precision">-precision <var>value</var></a></td> 917 <td>set the maximum number of significant digits to be printed</td> 918 </tr> 919 920 <tr> 921 <td><a href="../www/command-line-options.html#preview">-preview <var>type</var></a></td> 922 <td>image preview type</td> 923 </tr> 924 925 <tr> 926 <td><a href="../www/command-line-options.html#print">-print <var>string</var></a></td> 927 <td>interpret string and print to console</td> 928 </tr> 929 930 <tr> 931 <td><a href="../www/command-line-options.html#process">-process <var>image-filter</var></a></td> 932 <td>process the image with a custom image filter</td> 933 </tr> 934 935 <tr> 936 <td><a href="../www/command-line-options.html#profile">-profile <var>filename</var></a></td> 937 <td>add, delete, or apply an image profile</td> 938 </tr> 939 940 <tr> 941 <td><a href="../www/command-line-options.html#quality">-quality <var>value</var></a></td> 942 <td>JPEG/MIFF/PNG compression level</td> 943 </tr> 944 945 <tr> 946 <td><a href="../www/command-line-options.html#quantize">-quantize <var>colorspace</var></a></td> 947 <td>reduce image colors in this colorspace</td> 948 </tr> 949 950 <tr> 951 <td><a href="../www/command-line-options.html#quiet">-quiet</a></td> 952 <td>suppress all warning messages</td> 953 </tr> 954 955 <tr> 956 <td><a href="../www/command-line-options.html#radial-blur">-radial-blur <var>angle</var></a></td> 957 <td>radial blur the image</td> 958 </tr> 959 960 <tr> 961 <td><a href="../www/command-line-options.html#raise">-raise <var>value</var></a></td> 962 <td>lighten/darken image edges to create a 3-D effect</td> 963 </tr> 964 965 <tr> 966 <td><a href="../www/command-line-options.html#random-threshold">-random-threshold <var>low,high</var></a></td> 967 <td>random threshold the image</td> 968 </tr> 969 970 <tr> 971 <td><a href="../www/command-line-options.html#red-primary">-red-primary <var>point</var></a></td> 972 <td>chromaticity red primary point</td> 973 </tr> 974 975 <tr> 976 <td><a href="../www/command-line-options.html#regard-warnings">-regard-warnings</a></td> 977 <td>pay attention to warning messages.</td> 978 </tr> 979 980 <tr> 981 <td><a href="../www/command-line-options.html#region">-region <var>geometry</var></a></td> 982 <td>apply options to a portion of the image</td> 983 </tr> 984 985 <tr> 986 <td><a href="../www/command-line-options.html#remap">-remap <var>filename</var></a></td> 987 <td>transform image colors to match this set of colors</td> 988 </tr> 989 990 <tr> 991 <td><a href="../www/command-line-options.html#render">-render</a></td> 992 <td>render vector graphics</td> 993 </tr> 994 995 <tr> 996 <td><a href="../www/command-line-options.html#repage">-repage <var>geometry</var></a></td> 997 <td>size and location of an image canvas</td> 998 </tr> 999 1000 <tr> 1001 <td><a href="../www/command-line-options.html#resample">-resample <var>geometry</var></a></td> 1002 <td>change the resolution of an image</td> 1003 </tr> 1004 1005 <tr> 1006 <td><a href="../www/command-line-options.html#resize">-resize <var>geometry</var></a></td> 1007 <td>resize the image</td> 1008 </tr> 1009 1010 <tr> 1011 <td><a href="../www/command-line-options.html#respect-parentheses">-respect-parentheses</a></td> 1012 <td>settings remain in effect until parenthesis boundary.</td> 1013 </tr> 1014 1015 <tr> 1016 <td><a href="../www/command-line-options.html#roll">-roll <var>geometry</var></a></td> 1017 <td>roll an image vertically or horizontally</td> 1018 </tr> 1019 1020 <tr> 1021 <td><a href="../www/command-line-options.html#rotate">-rotate <var>degrees</var></a></td> 1022 <td>apply Paeth rotation to the image</td> 1023 </tr> 1024 1025 <tr> 1026 <td><a href="../www/command-line-options.html#sample">-sample <var>geometry</var></a></td> 1027 <td>scale image with pixel sampling</td> 1028 </tr> 1029 1030 <tr> 1031 <td><a href="../www/command-line-options.html#sampling-factor">-sampling-factor <var>geometry</var></a></td> 1032 <td>horizontal and vertical sampling factor</td> 1033 </tr> 1034 1035 <tr> 1036 <td><a href="../www/command-line-options.html#scale">-scale <var>geometry</var></a></td> 1037 <td>scale the image</td> 1038 </tr> 1039 1040 <tr> 1041 <td><a href="../www/command-line-options.html#scene">-scene <var>value</var></a></td> 1042 <td>image scene number</td> 1043 </tr> 1044 1045 <tr> 1046 <td><a href="../www/command-line-options.html#seed">-seed <var>value</var></a></td> 1047 <td>seed a new sequence of pseudo-random numbers</td> 1048 </tr> 1049 1050 <tr> 1051 <td><a href="../www/command-line-options.html#segment">-segment <var>values</var></a></td> 1052 <td>segment an image</td> 1053 </tr> 1054 1055 <tr> 1056 <td><a href="../www/command-line-options.html#threshold">-selective-blur <var>geometry</var></a></td> 1057 <td>selectively blur pixels within a contrast threshold</td> 1058 </tr> 1059 1060 <tr> 1061 <td><a href="../www/command-line-options.html#separate">-separate</a></td> 1062 <td>separate an image channel into a grayscale image</td> 1063 </tr> 1064 1065 <tr> 1066 <td><a href="../www/command-line-options.html#sepia-tone">-sepia-tone <var>threshold</var></a></td> 1067 <td>simulate a sepia-toned photo</td> 1068 </tr> 1069 1070 <tr> 1071 <td><a href="../www/command-line-options.html#set">-set <var>attribute value</var></a></td> 1072 <td>set an image attribute</td> 1073 </tr> 1074 1075 <tr> 1076 <td><a href="../www/command-line-options.html#shade">-shade <var>degrees</var></a></td> 1077 <td>shade the image using a distant light source</td> 1078 </tr> 1079 1080 <tr> 1081 <td><a href="../www/command-line-options.html#shadow">-shadow <var>geometry</var></a></td> 1082 <td>simulate an image shadow</td> 1083 </tr> 1084 1085 <tr> 1086 <td><a href="../www/command-line-options.html#sharpen">-sharpen <var>geometry</var></a></td> 1087 <td>sharpen the image</td> 1088 </tr> 1089 1090 <tr> 1091 <td><a href="../www/command-line-options.html#shave">-shave <var>geometry</var></a></td> 1092 <td>shave pixels from the image edges</td> 1093 </tr> 1094 1095 <tr> 1096 <td><a href="../www/command-line-options.html#shear">-shear <var>geometry</var></a></td> 1097 <td>slide one edge of the image along the X or Y axis</td> 1098 </tr> 1099 1100 <tr> 1101 <td><a href="../www/command-line-options.html#sigmoidal">-sigmoidal-contrast <var>geometry</var></a></td> 1102 <td>increase the contrast without saturating highlights or shadows</td> 1103 </tr> 1104 1105 <tr> 1106 <td><a href="../www/command-line-options.html#smush">-smush <var>offset</var></a></td> 1107 <td>smush an image sequence together</td> 1108 </tr> 1109 1110 <tr> 1111 <td><a href="../www/command-line-options.html#size">-size <var>geometry</var></a></td> 1112 <td>width and height of image</td> 1113 </tr> 1114 1115 <tr> 1116 <td><a href="../www/command-line-options.html#sketch">-sketch <var>geometry</var></a></td> 1117 <td>simulate a pencil sketch</td> 1118 </tr> 1119 1120 <tr> 1121 <td><a href="../www/command-line-options.html#solarize">-solarize <var>threshold</var></a></td> 1122 <td>negate all pixels above the threshold level</td> 1123 </tr> 1124 1125 <tr> 1126 <td><a href="../www/command-line-options.html#splice">-splice <var>geometry</var></a></td> 1127 <td>splice the background color into the image</td> 1128 </tr> 1129 1130 <tr> 1131 <td><a href="../www/command-line-options.html#spread">-spread <var>radius</var></a></td> 1132 <td>displace image pixels by a random amount</td> 1133 </tr> 1134 1135 <tr> 1136 <td><a href="../www/command-line-options.html#statistic">-statistic <var>type</var> <var>geometry</var></a></td> 1137 <td>replace each pixel with corresponding statistic from the neighborhood</td> 1138 </tr> 1139 1140 <tr> 1141 <td><a href="../www/command-line-options.html#strip">-strip</a></td> 1142 <td>strip image of all profiles and comments</td> 1143 </tr> 1144 1145 <tr> 1146 <td><a href="../www/command-line-options.html#stroke">-stroke <var>color</var></a></td> 1147 <td>graphic primitive stroke color</td> 1148 </tr> 1149 1150 <tr> 1151 <td><a href="../www/command-line-options.html#strokewidth">-strokewidth <var>value</var></a></td> 1152 <td>graphic primitive stroke width</td> 1153 </tr> 1154 1155 <tr> 1156 <td><a href="../www/command-line-options.html#stretch">-stretch <var>type</var></a></td> 1157 <td>render text with this font stretch</td> 1158 </tr> 1159 1160 <tr> 1161 <td><a href="../www/command-line-options.html#style">-style <var>type</var></a></td> 1162 <td>render text with this font style</td> 1163 </tr> 1164 1165 <tr> 1166 <td><a href="../www/command-line-options.html#swap">-swap <var>indexes</var></a></td> 1167 <td>swap two images in the image sequence</td> 1168 </tr> 1169 1170 <tr> 1171 <td><a href="../www/command-line-options.html#swirl">-swirl <var>degrees</var></a></td> 1172 <td>swirl image pixels about the center</td> 1173 </tr> 1174 1175 <tr> 1176 <td><a href="../www/command-line-options.html#synchronize">-synchronize</a></td> 1177 <td>synchronize image to storage device</td> 1178 </tr> 1179 1180 <tr> 1181 <td><a href="../www/command-line-options.html#taint">-taint</a></td> 1182 <td>mark the image as modified</td> 1183 </tr> 1184 1185 <tr> 1186 <td><a href="../www/command-line-options.html#texture">-texture <var>filename</var></a></td> 1187 <td>name of texture to tile onto the image background</td> 1188 </tr> 1189 1190 <tr> 1191 <td><a href="../www/command-line-options.html#threshold">-threshold <var>value</var></a></td> 1192 <td>threshold the image</td> 1193 </tr> 1194 1195 <tr> 1196 <td><a href="../www/command-line-options.html#thumbnail">-thumbnail <var>geometry</var></a></td> 1197 <td>create a thumbnail of the image</td> 1198 </tr> 1199 1200 <tr> 1201 <td><a href="../www/command-line-options.html#tile">-tile <var>filename</var></a></td> 1202 <td>tile image when filling a graphic primitive</td> 1203 </tr> 1204 1205 <tr> 1206 <td><a href="../www/command-line-options.html#tile-offset">-tile-offset <var>geometry</var></a></td> 1207 <td>set the image tile offset</td> 1208 </tr> 1209 1210 <tr> 1211 <td><a href="../www/command-line-options.html#tint">-tint <var>value</var></a></td> 1212 <td>tint the image with the fill color</td> 1213 </tr> 1214 1215 <tr> 1216 <td><a href="../www/command-line-options.html#transform">-transform</a></td> 1217 <td>affine transform image</td> 1218 </tr> 1219 1220 <tr> 1221 <td><a href="../www/command-line-options.html#transparent">-transparent <var>color</var></a></td> 1222 <td>make this color transparent within the image</td> 1223 </tr> 1224 1225 <tr> 1226 <td><a href="../www/command-line-options.html#transparent-color">-transparent-color <var>color</var></a></td> 1227 <td>transparent color</td> 1228 </tr> 1229 1230 <tr> 1231 <td><a href="../www/command-line-options.html#transpose">-transpose</a></td> 1232 <td>flip image in the vertical direction and rotate 90 degrees</td> 1233 </tr> 1234 1235 <tr> 1236 <td><a href="../www/command-line-options.html#transverse">-transverse</a></td> 1237 <td>flop image in the horizontal direction and rotate 270 degrees</td> 1238 </tr> 1239 1240 <tr> 1241 <td><a href="../www/command-line-options.html#treedepth">-treedepth <var>value</var></a></td> 1242 <td>color tree depth</td> 1243 </tr> 1244 1245 <tr> 1246 <td><a href="../www/command-line-options.html#trim">-trim</a></td> 1247 <td>trim image edges</td> 1248 </tr> 1249 1250 <tr> 1251 <td><a href="../www/command-line-options.html#type">-type <var>type</var></a></td> 1252 <td>image type</td> 1253 </tr> 1254 1255 <tr> 1256 <td><a href="../www/command-line-options.html#undercolor">-undercolor <var>color</var></a></td> 1257 <td>annotation bounding box color</td> 1258 </tr> 1259 1260 <tr> 1261 <td><a href="../www/command-line-options.html#unique-colors">-unique-colors</a></td> 1262 <td>discard all but one of any pixel color.</td> 1263 </tr> 1264 1265 <tr> 1266 <td><a href="../www/command-line-options.html#units">-units <var>type</var></a></td> 1267 <td>the units of image resolution</td> 1268 </tr> 1269 1270 <tr> 1271 <td><a href="../www/command-line-options.html#unsharp">-unsharp <var>geometry</var></a></td> 1272 <td>sharpen the image</td> 1273 </tr> 1274 1275 <tr> 1276 <td><a href="../www/command-line-options.html#verbose">-verbose</a></td> 1277 <td>print detailed information about the image</td> 1278 </tr> 1279 1280 <tr> 1281 <td><a href="../www/command-line-options.html#version">-version</a></td> 1282 <td>print version information</td> 1283 </tr> 1284 1285 <tr> 1286 <td><a href="../www/command-line-options.html#view">-view</a></td> 1287 <td>FlashPix viewing transforms</td> 1288 </tr> 1289 1290 <tr> 1291 <td><a href="../www/command-line-options.html#vignette">-vignette <var>geometry</var></a></td> 1292 <td>soften the edges of the image in vignette style</td> 1293 </tr> 1294 1295 <tr> 1296 <td><a href="../www/command-line-options.html#virtual-pixel">-virtual-pixel <var>method</var></a></td> 1297 <td>access method for pixels outside the boundaries of the image</td> 1298 </tr> 1299 1300 <tr> 1301 <td><a href="../www/command-line-options.html#wave">-wave <var>geometry</var></a></td> 1302 <td>alter an image along a sine wave</td> 1303 </tr> 1304 1305 <tr> 1306 <td><a href="../www/command-line-options.html#wavelet">-wavelet-denoise <var>threshold</var></a></td> 1307 <td>removes noise from the image using a wavelet transform</td> 1308 </tr> 1309 1310 <tr> 1311 <td><a href="../www/command-line-options.html#weight">-weight <var>type</var></a></td> 1312 <td>render text with this font weight</td> 1313 </tr> 1314 1315 <tr> 1316 <td><a href="../www/command-line-options.html#white-point">-white-point <var>point</var></a></td> 1317 <td>chromaticity white point</td> 1318 </tr> 1319 1320 <tr> 1321 <td><a href="../www/command-line-options.html#white-threshold">-white-threshold <var>value</var></a></td> 1322 <td>force all pixels above the threshold into white</td> 1323 </tr> 1324 1325 <tr> 1326 <td><a href="../www/command-line-options.html#write">-write <var>filename</var></a></td> 1327 <td>write images to this file</td> 1328 </tr> 1329</table> 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