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| <p class="navigation-index">[<a href="#usage">Example Usage</a> • <a href="#options">Option Summary</a>]</p> |
| |
| <div class="doc-section"> |
| <p>Use the <kbd>convert</kbd> program to convert between image formats as well as resize an image, blur, crop, despeckle, dither, draw on, flip, join, re-sample, and much more. See <a href="../www/command-line-processing.html">Command Line Processing</a> for advice on how to structure your <kbd>convert</kbd> command or see below for example usages of the command.</p> |
| </div> |
| |
| <h2><a name="usage"></a>Example Usage</h2> |
| <div class="doc-section"> |
| |
| <p>We list a few examples of the <kbd>convert</kbd> command here to illustrate its usefulness and ease of use. To get started, lets convert an image in the JPEG format to PNG:</p> |
| |
| <p class='crt'><span class="crtprompt"> $magick> </span><span class='crtin'>convert rose.jpg rose.png</span></p> |
| <p>Next, we reduce the image size before it is written to the PNG format:</p> |
| |
| <p class='crt'><span class="crtprompt"> $magick> </span><span class='crtin'>convert rose.jpg -resize 50% rose.png</span></p> |
| <p class="image"> |
| <a href="../images/rose.jpg"> |
| <img src="../images/rose.jpg" width="70" height="46" alt="rose" /> |
| </a> |
| <img style="margin-top:13px; margin-bottom:13px;" src="../images/right.gif" width="20" height="20" alt="==>" /> |
| <a href="../images/rose.png"> |
| <img style="margin-top:11px; margin-bottom:12px;" src="../images/rose.png" width="35" height="23" alt="rose" /> |
| </a> |
| </p> |
| |
| <p>You can combine multiple image-processing operations to produce complex results:</p> |
| |
| <p class='crt'><span class="crtprompt"> $magick> </span><span class='crtin'>convert -size 320x85 xc:transparent -font Bookman-DemiItalic -pointsize 72 \ <br/> |
| -draw "text 25,60 'Magick'" -channel RGBA -blur 0x6 -fill darkred -stroke magenta \ <br/> |
| -draw "text 20,55 'Magick'" fuzzy-magick.png</span></p> |
| <p class="image"> |
| <a href="../images/fuzzy-magick.png"><img src="../images/fuzzy-magick.png" width="320" height="85" alt="fuzzy-magick" /></a> |
| </p> |
| |
| <p>You can find additional examples of using <kbd>convert</kbd> in <a href="http://www.imagemagick.org/Usage/">Examples of ImageMagick Usage</a>.</p> |
| |
| </div> |
| |
| <h2><a name="options"></a>Option Summary</h2> |
| <div class="doc-section"> |
| |
| <p>The <kbd>convert</kbd> command recognizes these options. Click on an option to get more details about how that option works.</p> |
| |
| <table class="doc"> |
| <tbody> |
| <tr> |
| <th align="left">Option</th> |
| <th align="left">Description</th> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#adaptive-blur">-adaptive-blur <em class="option">geometry</em></a></td> |
| <td valign="top">adaptively blur pixels; decrease effect near edges</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#adaptive-resize">-adaptive-resize <em class="option">geometry</em></a></td> |
| <td valign="top">adaptively resize image with data dependent triangulation.</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#adaptive-sharpen">-adaptive-sharpen <em class="option">geometry</em></a></td> |
| <td valign="top">adaptively sharpen pixels; increase effect near edges</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#adjoin">-adjoin</a></td> |
| <td valign="top">join images into a single multi-image file</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#affine">-affine <em class="option">matrix</em></a></td> |
| <td valign="top">affine transform matrix</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#alpha">-alpha</a></td> |
| <td valign="top">on, activate, off, deactivate, set, opaque, copy", |
| transparent, extract, background, or shape the alpha channel</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#annotate">-annotate <em class="option">geometry text</em></a></td> |
| <td valign="top">annotate the image with text</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#antialias">-antialias</a></td> |
| <td valign="top">remove pixel-aliasing</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#append">-append</a></td> |
| <td valign="top">append an image sequence</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#authenticate">-authenticate <em class="option">value</em></a></td> |
| <td valign="top">decipher image with this password</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#auto-gamma">-auto-gamma</a></td> |
| <td valign="top">automagically adjust gamma level of image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#auto-level">-auto-level</a></td> |
| <td valign="top">automagically adjust color levels of image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#auto-orient">-auto-orient</a></td> |
| <td valign="top">automagically orient image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#background">-background <em class="option">color</em></a></td> |
| <td valign="top">background color</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#bench">-bench <em class="option">iterations</em></a></td> |
| <td valign="top">measure performance</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#bias">-bias <em class="option">value</em></a></td> |
| <td valign="top">add bias when convolving an image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#black-threshold">-black-threshold <em class="option">value</em></a></td> |
| <td valign="top">force all pixels below the threshold into black</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#blue-primary">-blue-primary <em class="option">point</em></a></td> |
| <td valign="top">chromaticity blue primary point</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#blue-shift">-blue-shift <em class="option">factor</em></a></td> |
| <td valign="top">simulate a scene at nighttime in the moonlight</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#blur">-blur <em class="option">geometry</em></a></td> |
| <td valign="top">reduce image noise and reduce detail levels</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#border">-border <em class="option">geometry</em></a></td> |
| <td valign="top">surround image with a border of color</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#bordercolor">-bordercolor <em class="option">color</em></a></td> |
| <td valign="top">border color</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#brightness-contrast">-brightness-contrast <em class="option">geometry</em></a></td> |
| <td valign="top">improve brightness / contrast of the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#caption">-caption <em class="option">string</em></a></td> |
| <td valign="top">assign a caption to an image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#cdl">-cdl <em class="option">filename</em></a></td> |
| <td valign="top">color correct with a color decision list</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#channel">-channel <em class="option">type</em></a></td> |
| <td valign="top">apply option to select image channels</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#charcoal">-charcoal <em class="option">radius</em></a></td> |
| <td valign="top">simulate a charcoal drawing</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#chop">-chop <em class="option">geometry</em></a></td> |
| <td valign="top">remove pixels from the image interior</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#clamp">-clamp</a></td> |
| <td valign="top">restrict colors from 0 to the quantum depth</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#clip">-clip</a></td> |
| <td valign="top">clip along the first path from the 8BIM profile</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#clip-mask">-clip-mask</a> <em class="option">filename</em></td> |
| <td valign="top">associate clip mask with the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#clip-path">-clip-path <em class="option">id</em></a></td> |
| <td valign="top">clip along a named path from the 8BIM profile</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#clone">-clone <em class="option">index</em></a></td> |
| <td valign="top">clone an image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#clut">-clut</a></td> |
| <td valign="top">apply a color lookup table to the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#contrast-stretch">-contrast-stretch <em class="option">geometry</em></a></td> |
| <td valign="top">improve the contrast in an image by `stretching' the range of intensity value</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#coalesce">-coalesce</a></td> |
| <td valign="top">merge a sequence of images</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#colorize">-colorize <em class="option">value</em></a></td> |
| <td valign="top">colorize the image with the fill color</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#color-matrix">-color-matrix <em class="option">matrix</em></a></td> |
| <td valign="top">apply color correction to the image.</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#colors">-colors <em class="option">value</em></a></td> |
| <td valign="top">preferred number of colors in the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#colorspace">-colorspace <em class="option">type</em></a></td> |
| <td valign="top">set image colorspace</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#combine">-combine</a></td> |
| <td valign="top">combine a sequence of images</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#comment">-comment <em class="option">string</em></a></td> |
| <td valign="top">annotate image with comment</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#compose">-compose <em class="option">operator</em></a></td> |
| <td valign="top">set image composite operator</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#composite">-composite</a></td> |
| <td valign="top">composite image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#compress">-compress <em class="option">type</em></a></td> |
| <td valign="top">image compression type</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#contrast">-contrast</a></td> |
| <td valign="top">enhance or reduce the image contrast</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#convolve">-convolve <em class="option">coefficients</em></a></td> |
| <td valign="top">apply a convolution kernel to the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#crop">-crop <em class="option">geometry</em></a></td> |
| <td valign="top">crop the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#cycle">-cycle <em class="option">amount</em></a></td> |
| <td valign="top">cycle the image colormap</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#decipher">-decipher <em class="option">filename</em></a></td> |
| <td valign="top">convert cipher pixels to plain</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#debug">-debug <em class="option">events</em></a></td> |
| <td valign="top">display copious debugging information</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#define">-define <em class="option">format:option</em></a></td> |
| <td valign="top">define one or more image format options</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#deconstruct">-deconstruct</a></td> |
| <td valign="top">break down an image sequence into constituent parts</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#delay">-delay <em class="option">value</em></a></td> |
| <td valign="top">display the next image after pausing</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#delete">-delete <em class="option">index</em></a></td> |
| <td valign="top">delete the image from the image sequence</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#density">-density <em class="option">geometry</em></a></td> |
| <td valign="top">horizontal and vertical density of the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#depth">-depth <em class="option">value</em></a></td> |
| <td valign="top">image depth</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#despeckle">-despeckle</a></td> |
| <td valign="top">reduce the speckles within an image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#direction">-direction <em class="option">type</em></a></td> |
| <td valign="top">render text right-to-left or left-to-right</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#display">-display <em class="option">server</em></a></td> |
| <td valign="top">get image or font from this X server</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#dispose">-dispose <em class="option">method</em></a></td> |
| <td valign="top">layer disposal method</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#distort">-distort <em class="option">type coefficients</em></a></td> |
| <td valign="top">distort image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#dither">-dither <em class="option">method</em></a></td> |
| <td valign="top">apply error diffusion to image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#draw">-draw <em class="option">string</em></a></td> |
| <td valign="top">annotate the image with a graphic primitive</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#edge">-edge <em class="option">radius</em></a></td> |
| <td valign="top">apply a filter to detect edges in the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#emboss">-emboss <em class="option">radius</em></a></td> |
| <td valign="top">emboss an image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#encipher">-encipher <em class="option">filename</em></a></td> |
| <td valign="top">convert plain pixels to cipher pixels</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#encoding">-encoding <em class="option">type</em></a></td> |
| <td valign="top">text encoding type</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#endian">-endian <em class="option">type</em></a></td> |
| <td valign="top">endianness (MSB or LSB) of the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#enhance">-enhance</a></td> |
| <td valign="top">apply a digital filter to enhance a noisy image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#equalize">-equalize</a></td> |
| <td valign="top">perform histogram equalization to an image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#evaluate">-evaluate <em class="option">operator value</em></a></td> |
| <td valign="top">evaluate an arithmetic, relational, or logical expression</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#evaluate-sequence">-evaluate-sequence <em class="option">operator</em></a></td> |
| <td valign="top">evaluate an arithmetic, relational, or logical expression for an image sequence</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#extent">-extent <em class="option">geometry</em></a></td> |
| <td valign="top">set the image size</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#extract">-extract <em class="option">geometry</em></a></td> |
| <td valign="top">extract area from image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#family">-family <em class="option">name</em></a></td> |
| <td valign="top">render text with this font family</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#fft">-fft</a></td> |
| <td valign="top">implments the discrete Fourier transform (DFT)</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#fill">-fill <em class="option">color</em></a></td> |
| <td valign="top">color to use when filling a graphic primitive</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#filter">-filter <em class="option">type</em></a></td> |
| <td valign="top">use this filter when resizing an image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#flatten">-flatten</a></td> |
| <td valign="top">flatten a sequence of images</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#flip">-flip</a></td> |
| <td valign="top">flip image in the vertical direction</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#floodfill">-floodfill <em class="option">geometry color</em></a></td> |
| <td valign="top">floodfill the image with color</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#flop">-flop</a></td> |
| <td valign="top">flop image in the horizontal direction</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#font">-font <em class="option">name</em></a></td> |
| <td valign="top">render text with this font</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#format_identify_">-format <em class="option">string</em></a></td> |
| <td valign="top">output formatted image characteristics</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#frame">-frame <em class="option">geometry</em></a></td> |
| <td valign="top">surround image with an ornamental border</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#function">-function <em class="option">name</em></a></td> |
| <td valign="top">apply a function to the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#fuzz">-fuzz <em class="option">distance</em></a></td> |
| <td valign="top">colors within this distance are considered equal</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#fx">-fx <em class="option">expression</em></a></td> |
| <td valign="top">apply mathematical expression to an image channel(s)</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#gamma">-gamma <em class="option">value</em></a></td> |
| <td valign="top">level of gamma correction</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#gaussian-blur">-gaussian-blur <em class="option">geometry</em></a></td> |
| <td valign="top">reduce image noise and reduce detail levels</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#geometry">-geometry <em class="option">geometry</em></a></td> |
| <td valign="top">preferred size or location of the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#gravity">-gravity <em class="option">type</em></a></td> |
| <td valign="top">horizontal and vertical text placement</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#green-primary">-green-primary <em class="option">point</em></a></td> |
| <td valign="top">chromaticity green primary point</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#help">-help</a></td> |
| <td valign="top">print program options</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#identify">-identify</a></td> |
| <td valign="top">identify the format and characteristics of the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#ift">-ift</a></td> |
| <td valign="top">implements the inverse discrete Fourier transform (DFT)</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#implode">-implode <em class="option">amount</em></a></td> |
| <td valign="top">implode image pixels about the center</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#insert">-insert <em class="option">index</em></a></td> |
| <td valign="top">insert last image into the image sequence</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#intent">-intent <em class="option">type</em></a></td> |
| <td valign="top">type of rendering intent when managing the image color</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#interlace">-interlace <em class="option">type</em></a></td> |
| <td valign="top">type of image interlacing scheme</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#interline-spacing">-interline-spacing <em class="option">value</em></a></td> |
| <td valign="top">the space between two text lines</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#interpolate">-interpolate <em class="option">method</em></a></td> |
| <td valign="top">pixel color interpolation method</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#interword-spacing">-interword-spacing <em class="option">value</em></a></td> |
| <td valign="top">the space between two words</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#kerning">-kerning <em class="option">value</em></a></td> |
| <td valign="top">the space between two characters</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#label">-label <em class="option">string</em></a></td> |
| <td valign="top">assign a label to an image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#lat">-lat <em class="option">geometry</em></a></td> |
| <td valign="top">local adaptive thresholding</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#layers">-layers <em class="option">method</em></a></td> |
| <td valign="top">optimize or compare image layers</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#level">-level <em class="option">value</em></a></td> |
| <td valign="top">adjust the level of image contrast</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#limit">-limit <em class="option">type value</em></a></td> |
| <td valign="top">pixel cache resource limit</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#linear-stretch">-linear-stretch <em class="option">geometry</em></a></td> |
| <td valign="top">linear with saturation histogram stretch</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#liquid-rescale">-liquid-rescale <em class="option">geometry</em></a></td> |
| <td valign="top">rescale image with seam-carving</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#log">-log <em class="option">format</em></a></td> |
| <td valign="top">format of debugging information</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#loop">-loop <em class="option">iterations</em></a></td> |
| <td valign="top">add Netscape loop extension to your GIF animation</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#mask">-mask <em class="option">filename</em></a></td> |
| <td valign="top">associate a mask with the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#mattecolor">-mattecolor <em class="option">color</em></a></td> |
| <td valign="top">frame color</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#median">-median <em class="option">radius</em></a></td> |
| <td valign="top">apply a median filter to the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#modulate">-modulate <em class="option">value</em></a></td> |
| <td valign="top">vary the brightness, saturation, and hue</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#monitor">-monitor</a></td> |
| <td valign="top">monitor progress</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#monochrome">-monochrome</a></td> |
| <td valign="top">transform image to black and white</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#morph">-morph <em class="option">value</em></a></td> |
| <td valign="top">morph an image sequence</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#morphology">-morphology <em class="option">method</em></a> <em class="option">kernel</em></td> |
| <td valign="top">apply a morphology method to the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#motion-blur">-motion-blur <em class="option">geometry</em></a></td> |
| <td valign="top">simulate motion blur</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#negate">-negate</a></td> |
| <td valign="top">replace each pixel with its complementary color </td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#noise">-noise <em class="option">radius</em></a></td> |
| <td valign="top">add or reduce noise in an image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#normalize">-normalize</a></td> |
| <td valign="top">transform image to span the full range of colors</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#opaque">-opaque <em class="option">color</em></a></td> |
| <td valign="top">change this color to the fill color</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#ordered-dither">-ordered-dither <em class="option">NxN</em></a></td> |
| <td valign="top">ordered dither the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#orient">-orient <em class="option">type</em></a></td> |
| <td valign="top">image orientation</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#page">-page <em class="option">geometry</em></a></td> |
| <td valign="top">size and location of an image canvas (setting)</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#paint">-paint <em class="option">radius</em></a></td> |
| <td valign="top">simulate an oil painting</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#ping">-ping</a></td> |
| <td valign="top">efficiently determine image attributes</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#pointsize">-pointsize <em class="option">value</em></a></td> |
| <td valign="top">font point size</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#polaroid">-polaroid <em class="option">angle</em></a></td> |
| <td valign="top">simulate a Polaroid picture</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#posterize">-posterize <em class="option">levels</em></a></td> |
| <td valign="top">reduce the image to a limited number of color levels</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#precision">-precision <em class="option">value</em></a></td> |
| <td valign="top">set the maximum number of significant digits to be printed</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#preview">-preview <em class="option">type</em></a></td> |
| <td valign="top">image preview type</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#print">-print <em class="option">string</em></a></td> |
| <td valign="top">interpret string and print to console</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#process">-process <em class="option">image-filter</em></a></td> |
| <td valign="top">process the image with a custom image filter</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#profile">-profile <em class="option">filename</em></a></td> |
| <td valign="top">add, delete, or apply an image profile</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#quality">-quality <em class="option">value</em></a></td> |
| <td valign="top">JPEG/MIFF/PNG compression level</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#quantize">-quantize <em class="option">colorspace</em></a></td> |
| <td valign="top">reduce image colors in this colorspace</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#quiet">-quiet</a></td> |
| <td valign="top">suppress all warning messages</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#radial-blur">-radial-blur <em class="option">angle</em></a></td> |
| <td valign="top">radial blur the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#raise">-raise <em class="option">value</em></a></td> |
| <td valign="top">lighten/darken image edges to create a 3-D effect</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#random-threshold">-random-threshold <em class="option">low,high</em></a></td> |
| <td valign="top">random threshold the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#red-primary">-red-primary <em class="option">point</em></a></td> |
| <td valign="top">chromaticity red primary point</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#regard-warnings">-regard-warnings</a></td> |
| <td valign="top">pay attention to warning messages.</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#region">-region <em class="option">geometry</em></a></td> |
| <td valign="top">apply options to a portion of the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#remap">-remap <em class="option">filename</em></a></td> |
| <td valign="top">transform image colors to match this set of colors</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#render">-render</a></td> |
| <td valign="top">render vector graphics</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#repage">-repage <em class="option">geometry</em></a></td> |
| <td valign="top">size and location of an image canvas</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#resample">-resample <em class="option">geometry</em></a></td> |
| <td valign="top">change the resolution of an image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#resize">-resize <em class="option">geometry</em></a></td> |
| <td valign="top">resize the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#respect-parentheses">-respect-parentheses</a></td> |
| <td valign="top">settings remain in effect until parenthesis boundary.</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#roll">-roll <em class="option">geometry</em></a></td> |
| <td valign="top">roll an image vertically or horizontally</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#rotate">-rotate <em class="option">degrees</em></a></td> |
| <td valign="top">apply Paeth rotation to the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#sample">-sample <em class="option">geometry</em></a></td> |
| <td valign="top">scale image with pixel sampling</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#sampling-factor">-sampling-factor <em class="option">geometry</em></a></td> |
| <td valign="top">horizontal and vertical sampling factor</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#scale">-scale <em class="option">geometry</em></a></td> |
| <td valign="top">scale the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#scene">-scene <em class="option">value</em></a></td> |
| <td valign="top">image scene number</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#seed">-seed <em class="option">value</em></a></td> |
| <td valign="top">seed a new sequence of pseudo-random numbers</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#segment">-segment <em class="option">values</em></a></td> |
| <td valign="top">segment an image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#threshold">-selective-blur <em class="option">geometry</em></a></td> |
| <td valign="top">selectively blur pixels within a contrast threshold</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#separate">-separate</a></td> |
| <td valign="top">separate an image channel into a grayscale image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#sepia-tone">-sepia-tone <em class="option">threshold</em></a></td> |
| <td valign="top">simulate a sepia-toned photo</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#set">-set <em class="option">attribute value</em></a></td> |
| <td valign="top">set an image attribute</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#shade">-shade <em class="option">degrees</em></a></td> |
| <td valign="top">shade the image using a distant light source</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#shadow">-shadow <em class="option">geometry</em></a></td> |
| <td valign="top">simulate an image shadow</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#sharpen">-sharpen <em class="option">geometry</em></a></td> |
| <td valign="top">sharpen the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#shave">-shave <em class="option">geometry</em></a></td> |
| <td valign="top">shave pixels from the image edges</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#shear">-shear <em class="option">geometry</em></a></td> |
| <td valign="top">slide one edge of the image along the X or Y axis</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#sigmoidal">-sigmoidal-contrast <em class="option">geometry</em></a></td> |
| <td valign="top">increase the contrast without saturating highlights or shadows</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#size">-size <em class="option">geometry</em></a></td> |
| <td valign="top">width and height of image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#sketch">-sketch <em class="option">geometry</em></a></td> |
| <td valign="top">simulate a pencil sketch</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#solarize">-solarize <em class="option">threshold</em></a></td> |
| <td valign="top">negate all pixels above the threshold level</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#splice">-splice <em class="option">geometry</em></a></td> |
| <td valign="top">splice the background color into the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#spread">-spread <em class="option">radius</em></a></td> |
| <td valign="top">displace image pixels by a random amount</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#strip">-strip</a></td> |
| <td valign="top">strip image of all profiles and comments</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#stroke">-stroke <em class="option">color</em></a></td> |
| <td valign="top">graphic primitive stroke color</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#strokewidth">-strokewidth <em class="option">value</em></a></td> |
| <td valign="top">graphic primitive stroke width</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#stretch">-stretch <em class="option">type</em></a></td> |
| <td valign="top">render text with this font stretch</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#style">-style <em class="option">type</em></a></td> |
| <td valign="top">render text with this font style</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#swap">-swap <em class="option">indexes</em></a></td> |
| <td valign="top">swap two images in the image sequence</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#swirl">-swirl <em class="option">degrees</em></a></td> |
| <td valign="top">swirl image pixels about the center</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#synchronize">-synchronize</a></td> |
| <td valign="top">synchronize image to storage device</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#taint">-taint</a></td> |
| <td valign="top">mark the image as modified</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#texture">-texture <em class="option">filename</em></a></td> |
| <td valign="top">name of texture to tile onto the image background</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#threshold">-threshold <em class="option">value</em></a></td> |
| <td valign="top">threshold the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#thumbnail">-thumbnail <em class="option">geometry</em></a></td> |
| <td valign="top">create a thumbnail of the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#tile">-tile <em class="option">filename</em></a></td> |
| <td valign="top">tile image when filling a graphic primitive</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#tile-offset">-tile-offset <em class="option">geometry</em></a></td> |
| <td valign="top">set the image tile offset</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#tint">-tint <em class="option">value</em></a></td> |
| <td valign="top">tint the image with the fill color</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#transform">-transform</a></td> |
| <td valign="top">affine transform image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#transparent">-transparent <em class="option">color</em></a></td> |
| <td valign="top">make this color transparent within the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#transparent-color">-transparent-color <em class="option">color</em></a></td> |
| <td valign="top">transparent color</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#transpose">-transpose</a></td> |
| <td valign="top">flip image in the vertical direction and rotate 90 degrees</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#transverse">-transverse</a></td> |
| <td valign="top">flop image in the horizontal direction and rotate 270 degrees</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#treedepth">-treedepth <em class="option">value</em></a></td> |
| <td valign="top">color tree depth</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#trim">-trim</a></td> |
| <td valign="top">trim image edges</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#type">-type <em class="option">type</em></a></td> |
| <td valign="top">image type</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#undercolor">-undercolor <em class="option">color</em></a></td> |
| <td valign="top">annotation bounding box color</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#unique-colors">-unique-colors</a></td> |
| <td valign="top">discard all but one of any pixel color.</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#units">-units <em class="option">type</em></a></td> |
| <td valign="top">the units of image resolution</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#unsharp">-unsharp <em class="option">geometry</em></a></td> |
| <td valign="top">sharpen the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#verbose">-verbose</a></td> |
| <td valign="top">print detailed information about the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#version">-version</a></td> |
| <td valign="top">print version information</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#view">-view</a></td> |
| <td valign="top">FlashPix viewing transforms</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#vignette">-vignette <em class="option">geometry</em></a></td> |
| <td valign="top">soften the edges of the image in vignette style</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#virtual-pixel">-virtual-pixel <em class="option">method</em></a></td> |
| <td valign="top">access method for pixels outside the boundaries of the image</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#wave">-wave <em class="option">geometry</em></a></td> |
| <td valign="top">alter an image along a sine wave</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#weight">-weight <em class="option">type</em></a></td> |
| <td valign="top">render text with this font weight</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#white-point">-white-point <em class="option">point</em></a></td> |
| <td valign="top">chromaticity white point</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#white-threshold">-white-threshold <em class="option">value</em></a></td> |
| <td valign="top">force all pixels above the threshold into white</td> |
| </tr> |
| |
| <tr> |
| <td valign="top"><a href="../www/command-line-options.html#write">-write <em class="option">filename</em></a></td> |
| <td valign="top">write images to this file</td> |
| </tr> |
| |
| </tbody> |
| </table> |
| |
| </div> |
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