java.lang.IllegalStateException</code> - if the bit depth is not set.</dd>
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<h4>unsetBitDepth</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;unsetBitDepth()</pre>
<div class="block">Suppresses the setting of the bit depth of a grayscale image.
 The depth of the encoded image will be inferred from the source
 image bit depth, rounded up to the next power of 2 between 1
 and 16.</div>
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