erence_type&lt;channel_t,gray_layout_t,false,is_mutable&gt;::type</a> ref_t;
<a name="l00485"></a>00485     <span class="keyword">public</span>:
<a name="l00486"></a>00486         <span class="keyword">typedef</span> <a class="code" href="g_i_l_0513.html" title="Function object that returns a grayscale reference of the K-th channel (specified...">kth_channel_deref_fn&lt;K,const_ref_t&gt;</a>                               <a class="code" href="g_i_l_0513.html" title="Function object that returns a grayscale 