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<div class="subTitle">com.jhlabs.image</div>
<h2 title="Class OctTreeQuantizer" class="title">Class OctTreeQuantizer</h2>
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<li>java.lang.Object</li>
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<li>com.jhlabs.image.OctTreeQuantizer</li>
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<dd><a href="../../../com/jhlabs/image/Quantizer.html" title="interface in com.jhlabs.image">Quantizer</a></dd>
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<pre>public class <span class="strong">OctTreeQuantizer</span>
extends java.lang.Object
implements <a href="../../../com/jhlabs/image/Quantizer.html" title="interface in com.jhlabs.image">Quantizer</a></pre>
<div class="block">An image Quantizer based on the Octree algorithm. This is a very basic implementation
at present and could be much improved by picking the nodes to reduce more carefully
(i.e. not completely at random) when I get the time.</div>
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<th class="colOne" scope="col">Constructor and Description</th>
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<td class="colOne"><code><strong><a href="../../../com/jhlabs/image/OctTreeQuantizer.html#OctTreeQuantizer()">OctTreeQuantizer</a></strong>()</code> </td>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../com/jhlabs/image/OctTreeQuantizer.html#addPixels(int[], int, int)">addPixels</a></strong>(int[] pixels,
int offset,
int count)</code>
<div class="block">Add pixels to the quantizer.</div>
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<tr class="rowColor">
<td class="colFirst"><code>int[]</code></td>
<td class="colLast"><code><strong><a href="../../../com/jhlabs/image/OctTreeQuantizer.html#buildColorTable()">buildColorTable</a></strong>()</code>
<div class="block">Build the color table.</div>
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<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../com/jhlabs/image/OctTreeQuantizer.html#buildColorTable(int[], int[])">buildColorTable</a></strong>(int[] inPixels,
int[] table)</code>
<div class="block">A quick way to use the quantizer.</div>
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<tr class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../com/jhlabs/image/OctTreeQuantizer.html#getIndexForColor(int)">getIndexForColor</a></strong>(int rgb)</code>
<div class="block">Get the color table index for a color.</div>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../com/jhlabs/image/OctTreeQuantizer.html#setup(int)">setup</a></strong>(int numColors)</code>
<div class="block">Initialize the quantizer.</div>
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<h4>OctTreeQuantizer</h4>
<pre>public OctTreeQuantizer()</pre>
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<h4>setup</h4>
<pre>public void setup(int numColors)</pre>
<div class="block">Initialize the quantizer. This should be called before adding any pixels.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../com/jhlabs/image/Quantizer.html#setup(int)">setup</a></code> in interface <code><a href="../../../com/jhlabs/image/Quantizer.html" title="interface in com.jhlabs.image">Quantizer</a></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>numColors</code> - the number of colors we're quantizing to.</dd></dl>
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<h4>addPixels</h4>
<pre>public void addPixels(int[] pixels,
int offset,
int count)</pre>
<div class="block">Add pixels to the quantizer.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../com/jhlabs/image/Quantizer.html#addPixels(int[], int, int)">addPixels</a></code> in interface <code><a href="../../../com/jhlabs/image/Quantizer.html" title="interface in com.jhlabs.image">Quantizer</a></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>pixels</code> - the array of ARGB pixels</dd><dd><code>offset</code> - the offset into the array</dd><dd><code>count</code> - the count of pixels</dd></dl>
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<h4>getIndexForColor</h4>
<pre>public int getIndexForColor(int rgb)</pre>
<div class="block">Get the color table index for a color.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../com/jhlabs/image/Quantizer.html#getIndexForColor(int)">getIndexForColor</a></code> in interface <code><a href="../../../com/jhlabs/image/Quantizer.html" title="interface in com.jhlabs.image">Quantizer</a></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>rgb</code> - the color</dd>
<dt><span class="strong">Returns:</span></dt><dd>the index</dd></dl>
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<pre>public int[] buildColorTable()</pre>
<div class="block">Build the color table.</div>
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<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../com/jhlabs/image/Quantizer.html#buildColorTable()">buildColorTable</a></code> in interface <code><a href="../../../com/jhlabs/image/Quantizer.html" title="interface in com.jhlabs.image">Quantizer</a></code></dd>
<dt><span class="strong">Returns:</span></dt><dd>the color table</dd></dl>
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<pre>public void buildColorTable(int[] inPixels,
int[] table)</pre>
<div class="block">A quick way to use the quantizer. Just create a table the right size and pass in the pixels.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>inPixels</code> - the input colors</dd><dd><code>table</code> - the output color table</dd></dl>
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