http://avisynth.nl/index.php?action=history&feed=atom&title=MaskTools%2FEdgeMask 2026-05-14T01:00:17Z Revision history for this page on the wiki MediaWiki 1.19.24 http://avisynth.nl/index.php?title=MaskTools/EdgeMask&diff=163&oldid=prev 2013-05-09T15:01:59Z

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Admin http://avisynth.nl/index.php?title=MaskTools/EdgeMask&diff=162&oldid=prev 2008-03-06T20:03:15Z

<p></p> <p><b>New page</b></p><div>{{FilterCat|External_filters|Other_filters|Support_filters}}<br /> <br /> {{FuncDef|EdgeMask (clip[, int &quot;thY1&quot;[, int &quot;thY2&quot;[, int &quot;thC1&quot;[, int &quot;thC2&quot;[, string &quot;type&quot;]]]]])}}<br /> <br /> '''Plugin''': [[MaskTools]]<br /> <br /> This filter creates an edge mask of the picture. The edge-finding algorithm uses a convolution kernel, and the result of the convolution is then thresholded with &lt;tt&gt;thY1&lt;/tt&gt; and &lt;tt&gt;thY2&lt;/tt&gt; (luma) and &lt;tt&gt;thC1&lt;/tt&gt; and &lt;tt&gt;thC2&lt;/tt&gt; (chroma). The thresholding happens like that (r is the result of the convolution):<br /> <br /> * r &lt;= th1 gives 0.<br /> * th1 &lt; r &lt;= th2 gives r.<br /> * th2 &lt; r gives 255.<br /> <br /> In order to create a binary mask, you just have to set th1=th2.<br /> <br /> The choice of the convolution kernel is done by &lt;tt&gt;type&lt;/tt&gt;:<br /> <br /> {| border=&quot;0&quot; cellspacing=&quot;4&quot; cellpadding=&quot;8&quot;<br /> !width=35% align=&quot;left&quot; style=&quot;background:#8090B0&quot;| &lt;tt&gt;type&lt;/tt&gt;<br /> !width=65% align=&quot;left&quot; style=&quot;background:#8090B0&quot;| Kernel<br /> |-<br /> |style=&quot;background:lavender&quot;| &quot;roberts&quot;<br /> |style=&quot;background:lavender&quot;| <br /> {| border=&quot;1&quot; cellpadding=&quot;4&quot; width=&quot;100px&quot;<br /> |-<br /> |width=50% align=&quot;center&quot;| 2 <br /> |width=50% align=&quot;center&quot;| -1 <br /> |- <br /> |width=50% align=&quot;center&quot;| -1 <br /> |width=50% align=&quot;center&quot;| 0<br /> |}<br /> |-<br /> |style=&quot;background:lavender&quot;| &quot;sobel&quot; <br /> |style=&quot;background:lavender&quot;|<br /> {| border=&quot;1&quot; cellpadding=&quot;4&quot; width=&quot;150px&quot;<br /> |-<br /> |width=33% align=&quot;center&quot;| 0 <br /> |width=33% align=&quot;center&quot;| -1 <br /> |width=33% align=&quot;center&quot;| 0 <br /> |- <br /> |width=33% align=&quot;center&quot;| -1 <br /> |width=33% align=&quot;center&quot;| 0 <br /> |width=33% align=&quot;center&quot;| 1<br /> |-<br /> |width=33% align=&quot;center&quot;| 0 <br /> |width=33% align=&quot;center&quot;| 1 <br /> |width=33% align=&quot;center&quot;| 0<br /> |}<br /> |-<br /> |style=&quot;background:lavender&quot;| &quot;laplace&quot;<br /> |style=&quot;background:lavender&quot;|<br /> {| border=&quot;1&quot; cellpadding=&quot;4&quot; width=&quot;150px&quot;<br /> |-<br /> |width=33% align=&quot;center&quot;| -1/8 <br /> |width=33% align=&quot;center&quot;| -1/8 <br /> |width=33% align=&quot;center&quot;| -1/8 <br /> |- <br /> |width=33% align=&quot;center&quot;| -1/8 <br /> |width=33% align=&quot;center&quot;| 1 <br /> |width=33% align=&quot;center&quot;| -1/8<br /> |-<br /> |width=33% align=&quot;center&quot;| -1/8 <br /> |width=33% align=&quot;center&quot;| -1/8 <br /> |width=33% align=&quot;center&quot;| -1/8<br /> |}<br /> |-<br /> |style=&quot;background:lavender&quot;| &quot;special&quot;<br /> |style=&quot;background:lavender&quot;|<br /> {| border=&quot;1&quot; cellpadding=&quot;4&quot; width=&quot;150px&quot;<br /> |-<br /> |width=33% align=&quot;center&quot;| -1/4 <br /> |width=33% align=&quot;center&quot;| 0 <br /> |width=33% align=&quot;center&quot;| -1/4 <br /> |- <br /> |width=33% align=&quot;center&quot;| 0 <br /> |width=33% align=&quot;center&quot;| 1 <br /> |width=33% align=&quot;center&quot;| 0<br /> |-<br /> |width=33% align=&quot;center&quot;| -1/4 <br /> |width=33% align=&quot;center&quot;| 0 <br /> |width=33% align=&quot;center&quot;| -1/4<br /> |}<br /> |}<br /> <br /> Finally, there are also two other possible values for &lt;tt&gt;type&lt;/tt&gt; (&quot;cartoon&quot; and &quot;line&quot;), which have behaviors which are not documented here.<br /> <br /> Defaults are : &lt;tt&gt;thY1&lt;/tt&gt; = 0, &lt;tt&gt;thY2&lt;/tt&gt; = 20, &lt;tt&gt;thC1&lt;/tt&gt; = 0, &lt;tt&gt;thC2&lt;/tt&gt; = 20 and &lt;tt&gt;type&lt;/tt&gt; = &quot;sobel&quot;.<br /> <br /> ----<br /> Back to [[MaskTools]].</div>

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