  check_compatible&lt;Pixel&gt;();
<a name="l00126"></a>00126     }   
<a name="l00127"></a>00127 
<a name="l00128"></a>00128     <span class="keyword">template</span> &lt;<span class="keyword">typename</span> P&gt; <a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">pixel</a>&amp; operator=(<span class="keyword">const</span> P&amp; p)           { assign(p, mpl::bool_&lt;is_pixel&lt;P&gt;::value&gt;()); <span class="k