el&amp; green, <span class="keyword">const</span> BlueChannel&amp; blue)<span class="keyword"> const </span>{</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;        <span class="keywordflow">return</span> channel_convert&lt;GrayChannelValue&gt;(<a class="code" href="group___channel_model.html#gaa70e2f51d4342cd54a28684f20c6135b">float32_t</a>(</div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;            channel_convert&lt;float32_t&gt;(red