e><a href="Image-class.html">Image</a></code> object, the function
 returns nothing and modifies that <code><a href="Image-class.html">Image</a></code> object in place.</p>
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    <h2 id="references">References<a class="anchor" aria-label="anchor" href="#references"></a></h2>
    <p>Canny J. A computational approach to edge detection. IEEE Trans
 Pattern Anal Mach Intell. 1986;8: 679–698. doi:10.1109/TPAMI.1986.4767851</p>
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    <div class="section level2"