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PODelaunay triangulation opencv c++
 

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  1. PODelaunay triangulation opencv c++
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    <p>I made a delaunay triangulation with openCv thanks to this code : <a href="https://github.com/Itseez/opencv/blob/master/samples/cpp/delaunay2.cpp" rel="noreferrer">example code</a> (in partiluclar draw_subdiv). However, when I want to display the triangulation, I get the mesh and lines who don't belong to triangulation.This lines are due to the fact that the triangulation algorithm starts its job considering triangles posted at "infinity".</p> <p>Can you explain me how to draw only the mesh into the convex hull please (without this lines) ?</p> <p>display function :</p> <pre><code> void draw_subdiv(Mat &amp;img, Subdiv2D&amp; subdiv, Scalar delaunay_color) { vector&lt;Vec6f&gt; triangleList; subdiv.getTriangleList(triangleList); vector&lt;Point&gt; pt(3); for(size_t i = 0; i &lt; triangleList.size(); ++i) { Vec6f t = triangleList[i]; pt[0] = Point(cvRound(t[0]), cvRound(t[1])); pt[1] = Point(cvRound(t[2]), cvRound(t[3])); pt[2] = Point(cvRound(t[4]), cvRound(t[5])); line(img, pt[0], pt[1], delaunay_color, 1); line(img, pt[1], pt[2], delaunay_color, 1); line(img, pt[2], pt[0], delaunay_color, 1); } } </code></pre> <p>main function :</p> <pre><code>Mat image = imread(argv[1], 1); ..... .... //creat delaunay Scalar delaunay_color(255, 255, 255), point_color(0,0,255); Rect rect(0,0,image.cols, image.rows); Subdiv2D subdiv(rect); for(int i = 0; i &lt; point.getDim(); ++i) { Point2f fp(point.getCoord()[i].real(), point.getCoord()[i].imag()); subdiv.insert(fp); } draw_subdiv(image, subdiv, delaunay_color); imwrite("data/delaunay.jpg", image); </code></pre> <p>Result:</p> <p><img src="https://i.stack.imgur.com/oBi2p.jpg" alt="enter image description here"></p>
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    1. COpost your display function, pls.
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