&#160;            detail::rgb_to_luminance&lt;typename color_element_type&lt;P2,gray_color_t&gt;::type&gt;(</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;                <a class="code" href="group___color_base_algorithm_color.html#gab2d1dda637cb2b7c32cc87f199ea1dc0">get_color</a>(src,<a class="code" href="structboost_1_1gil_1_1red__t.html">red_t</a>()), <a class="code" href="group___color_base_algorithm_color.html#gab2d1dda637cb2b7c32cc87f199ea1dc0">get_color</a>(src,<a