openCV中2个多边形的交叉区域

3 回答

• 8

  在两个图像中使用 CV_FILLED 绘制形状并使用AND . 面积是： CountNonZero(bitwise_and(ShapeAImage,ShapeBImage)) .

  回复于 2024-05-06T02:36:59+08:00
• 2

  最简单的代码编写方法如下：

  cv::Rect BoundingBox;
  int IntersectionArea = 0;
  //insert Min-Max X,Y to create the BoundingBox
  
  for (every y inside boundingbox)
       for (every x inside boundingbox)
           if (PointPolygonTest(x,y,Contour1) && PointPolygonTest(x,y,Contour2))
               IntersectionArea++;
  

  回复于 2024-05-06T02:36:59+08:00
• 1

  你可以找到交叉点多边形wth Clipper library

  //create clipper polygons from your points
  c.AddPolygons(subj, ptSubject);
  c.AddPolygons(clip, ptClip);
  c.Execute(ctIntersection, solution, pftNonZero, pftNonZero);
  

  那么calc area of this polygon

  回复于 2024-05-06T02:36:59+08:00