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<h2 title="Interface Quantizer" class="title">Interface Quantizer</h2>
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<dd><a href="../../../com/jhlabs/image/OctTreeQuantizer.html" title="class in com.jhlabs.image">OctTreeQuantizer</a></dd>
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<pre>public interface <span class="strong">Quantizer</span></pre>
<div class="block">The interface for an image quantizer. The addColor method is called (repeatedly
if necessary) with all the image pixels. A color table can then be returned by
calling the buildColorTable method.</div>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../com/jhlabs/image/Quantizer.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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<td class="colFirst"><code>int[]</code></td>
<td class="colLast"><code><strong><a href="../../../com/jhlabs/image/Quantizer.html#buildColorTable()">buildColorTable</a></strong>()</code>
<div class="block">Build a color table from the added pixels.</div>
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<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../com/jhlabs/image/Quantizer.html#getIndexForColor(int)">getIndexForColor</a></strong>(int rgb)</code>
<div class="block">Using the previously-built color table, return the index into that table for a pixel.</div>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../com/jhlabs/image/Quantizer.html#setup(int)">setup</a></strong>(int numColors)</code>
<div class="block">Initialize the quantizer.</div>
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<h4>setup</h4>
<pre>void setup(int numColors)</pre>
<div class="block">Initialize the quantizer. This should be called before adding any pixels.</div>
<dl><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>void addPixels(int[] pixels,
int offset,
int count)</pre>
<div class="block">Add pixels to the quantizer.</div>
<dl><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>buildColorTable</h4>
<pre>int[] buildColorTable()</pre>
<div class="block">Build a color table from the added pixels.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>an array of ARGB pixels representing a color table</dd></dl>
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<h4>getIndexForColor</h4>
<pre>int getIndexForColor(int rgb)</pre>
<div class="block">Using the previously-built color table, return the index into that table for a pixel.
This is guaranteed to return a valid index - returning the index of a color closer
to that requested if necessary.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>rgb</code> - the pixel to find</dd>
<dt><span class="strong">Returns:</span></dt><dd>the pixel's index in the color table</dd></dl>
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