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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<p>Returns the type of an image whose channels are not byte-aligned. </p>
<p>A packed image is an image whose pixels are byte aligned, such as "rgb565". <br />
 A bit-aligned image is an image whose pixels are not byte aligned, such as "rgb222". <br />
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<p>The sum of the bit sizes of all cha