code" href="g_i_l_0069.html" title="pixel related algorithms">color_base_algorithm.hpp</a>"</span>
<a name="l00038"></a>00038 
<a name="l00039"></a>00039 <span class="keyword">namespace </span>boost { <span class="keyword">namespace </span>gil {
<a name="l00040"></a>00040 
<a name="l00041"></a>00041 <span class="comment">// Forward-declare</span>
<a name="l00042"></a>00042 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> P&gt; <span class="keyword">struct </span>channel_type;
