d be fetched using:
 <code>int luminance = array[y * width + x] &amp; 0xff</code></div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../com/google/zxing/LuminanceSource.html#getMatrix--">getMatrix</a></code>&nbsp;in class&nbsp;<code><a href="../../../com/google/zxing/LuminanceSource.html" title="class in com.google.zxing">LuminanceSource</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A row-major 2D array of luminance values. Do not us