span> cv::Vec3f(v[0], v[1], v[2]);</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;}</div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;</div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;<span class="comment">// for 1-channel float mats (e.g., depth maps), we use PFM format.</span></div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;<span class="comment">// notes on the PFM form