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?>
<div id="imagick.compareimagechannels" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">Imagick::compareImageChannels</h1>
  <p class="verinfo">(PECL imagick 2, PECL imagick 3)</p><p class="refpurpose"><span class="refname">Imagick::compareImageChannels</span> &mdash; <span class="dc-title">Retourne la différence entre plusieurs images</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-imagick.compareimagechannels-description">
  <h3 class="title">Description</h3>
  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="methodname"><strong>Imagick::compareImageChannels</strong></span>(<span class="methodparam"><span class="type"><a href="class.imagick.php" class="type Imagick">Imagick</a></span> <code class="parameter">$image</code></span>, <span class="methodparam"><span class="type"><a href="language.types.integer.php" class="type int">int</a></span> <code class="parameter">$channelType</code></span>, <span class="methodparam"><span class="type"><a href="language.types.integer.php" class="type int">int</a></span> <code class="parameter">$metricType</code></span>): <span class="type"><a href="language.types.array.php" class="type array">array</a></span></div>

  <p class="para rdfs-comment">
   Compare une ou plusieurs images et retourne la différence.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-imagick.compareimagechannels-parameters">
  <h3 class="title">Liste de paramètres</h3>
  <p class="para">
   <dl>
    
     <dt><code class="parameter">image</code></dt>
     <dd>
      <p class="para">
       un objet Imagick contenant l&#039;image à comparer
      </p>
     </dd>
    
    
     <dt><code class="parameter">channelType</code></dt>
     <dd>
      <p class="para">
       Fournit une constante de canal valide pour le mode de canal.
       Pour utiliser plus d&#039;un canal, combinez les constantes de type
       de canal en utilisant les opérateurs de bits. Se reporter à la liste des
       <a href="imagick.constants.php#imagick.constants.channel" class="link">constantes de canal</a>.
      </p>
     </dd>
    
    
     <dt><code class="parameter">metricType</code></dt>
     <dd>
      <p class="para">
       Une des <a href="imagick.constants.php#imagick.constants.metric" class="link">constantes de type de métrique</a>.
      </p>
     </dd>
    
   </dl>
  </p>

 </div>

 <div class="refsect1 returnvalues" id="refsect1-imagick.compareimagechannels-returnvalues">
  <h3 class="title">Valeurs de retour</h3>
  <p class="para">
   Un tableau contenant <code class="literal">new_wand</code> et
   <code class="literal">distortion</code>.
  </p>
 </div>


 <div class="refsect1 errors" id="refsect1-imagick.compareimagechannels-errors">
  <h3 class="title">Erreurs / Exceptions</h3>
  <p class="para">
   Lance une exception <span class="classname"><a href="class.imagickexception.php" class="classname">ImagickException</a></span> si une erreur survient.
  </p>
 </div>


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