e Reference<div class="ingroups"><a class="el" href="group___g_i_l_is_basic.html">xxx_is_basic</a></div></div>  </div>
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<p>Determines if a given pixel reference is basic Basic references must use <a class="el" href="structboost_1_1gil_1_1pixel.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept, PixelValueConcept, HomogeneousPixelBasedConcept. ">gil::pixel</a>&amp; (if interleaved), <a class="el" href="structboo