<a name="l00252"></a><span class="lineno">  252</span>&#160;    cv::cvtColor(imageOut, imageOut, cv::COLOR_BGR2GRAY);</div><div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (chI == 3 &amp;&amp; chO == 4) {</div><div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;    cv::cvtColor(imageOut, imageOut, cv::COLOR_BGR2BGRA);</div><div class="line"><a name="l00255"></a><span class="li