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authorSandeep Gupta2017-07-07 11:21:16 +0530
committerSandeep Gupta2017-07-07 11:21:16 +0530
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-<?xml version="1.0" encoding="UTF-8"?>
-
-<!--
- *
- * This help file was generated from CV_Canny.sci using help_from_sci().
- *
- -->
-
-<refentry version="5.0-subset Scilab" xml:id="CV_Canny" xml:lang="en"
- xmlns="http://docbook.org/ns/docbook"
- xmlns:xlink="http://www.w3.org/1999/xlink"
- xmlns:svg="http://www.w3.org/2000/svg"
- xmlns:ns3="http://www.w3.org/1999/xhtml"
- xmlns:mml="http://www.w3.org/1998/Math/MathML"
- xmlns:scilab="http://www.scilab.org"
- xmlns:db="http://docbook.org/ns/docbook">
-
- <refnamediv>
- <refname>CV_Canny</refname>
- <refpurpose>Finds edges in image using Canny algorithm</refpurpose>
- </refnamediv>
-
-
-<refsynopsisdiv>
- <title>Calling Sequence</title>
- <synopsis>
- edges = CV_Canny(srcimg,threhold1,threshold2,aperture_size,L2gradient)
-
- </synopsis>
-</refsynopsisdiv>
-
-<refsection>
- <title>Parameters</title>
- <variablelist>
- <varlistentry><term>srcimg :</term>
- <listitem><para> single-channel 8-bit input image.</para></listitem></varlistentry>
- <varlistentry><term>threshold1 :</term>
- <listitem><para> first threshold for the hysteresis procedure.</para></listitem></varlistentry>
- <varlistentry><term>threshold2 :</term>
- <listitem><para> second threshold for the hysteresis procedure.</para></listitem></varlistentry>
- <varlistentry><term>aperture_size :</term>
- <listitem><para> aperture size for the Sobel() operator.</para></listitem></varlistentry>
- <varlistentry><term>L2gradient :</term>
- <listitem><para> a flag, indicating whether a more accurate</para></listitem></varlistentry>
- </variablelist>
-</refsection>
-
-<refsection>
- <title>Description</title>
- <para>
-This function can be used for finding edes in single channel 8 bit
-image. 'aperture_size' and 'L2gradient' are optionals. By default,
-aperture_size is 3 and L2gradient is false.
- </para>
- <para>
-For L2gradient: L_2 norm =sqrt{(dI/dx)^2 + (dI/dy)^2} should be used to calculate the image gradient magnitude (L2gradient=1 ), or whether the default L_1 norm =|dI/dx|+|dI/dy| is enough (L2gradient=0).
- </para>
- <para>
-This is curretly dummy function. It provides no functionality but is required
-for providing support for generating C code for OpenCV
- </para>
- <para>
-</para>
-</refsection>
-
-<refsection>
- <title>Examples</title>
- <programlisting role="example"><![CDATA[
-img = CV_LoadImage('~/test.jpg',0)
-dst = CV_CvtColor(img,"CV_RGB2GRAY");
-edge = CV_Canny(dst,50,100,3,0);
- ]]></programlisting>
-</refsection>
-
-<refsection>
- <title>See also</title>
- <simplelist type="inline">
- <member><link linkend="CV_LoadImage">CV_CvtColor</link></member>
- </simplelist>
-</refsection>
-
-<refsection>
- <title>Authors</title>
- <simplelist type="vert">
- <member>Siddhesh Wani</member>
- </simplelist>
-</refsection>
-</refentry>