问题描述
我在图像许多形状,我想保存自己的轮廓在数组中。
我的意思是,我想在阵列2 EXT在阵列1轮廓线形态1的坐标,对于形状2 ...
I have many shapes in image which I want to save their contours in arrays .I mean that I want the coordinates for contours for shape 1 in array 1 , for shape 2 in array 2 ext...
如果有两个形状如何使用他们的坐标,我得出他们之间的最短路线?
And if there are two shapes how can I draw the shortest line between them using their coordinates?
例如我有很多操作后,这个结果的图像
for example I had this result after many operations on an image
寻找轮廓后:
所以,我需要为每个形状轮廓的坐标来计算
So I need the coordinates for each shape contour to calculate the shortest distance between them
推荐答案
您可以参考&安培; 用于从检测轮廓。图片
You can refer this link & this wiki for detecting Contours from an Image.
要找到最小离两个形状遵循以下步骤:
To find the min Distance from two Shapes follow the following steps:
- 找到您要找到它们之间的距离最小的两个轮廓
- 通过在两个轮廓和放每个点循环。发现它们之间的距离
- 通过比较所有其它的距离和放取的最小距离。马克的点。
下面是该算法的EMGUCV实现。
Here is the EMGUCV Implementation for this algorithm.
private void button2_Click(object sender, EventArgs e)
{
Image<Gray, byte> Img_Scene_Gray = Img_Source_Bgr.Convert<Gray, byte>();
Image<Bgr, byte> Img_Result_Bgr = Img_Source_Bgr.Copy();
LineSegment2D MinIntersectionLineSegment = new LineSegment2D();
Img_Scene_Gray = Img_Scene_Gray.ThresholdBinary(new Gray(10), new Gray(255));
#region Finding Contours
using (MemStorage Scene_ContourStorage = new MemStorage())
{
for (Contour<Point> Contours_Scene = Img_Scene_Gray.FindContours(CHAIN_APPROX_METHOD.CV_CHAIN_APPROX_SIMPLE,
RETR_TYPE.CV_RETR_EXTERNAL, Scene_ContourStorage); Contours_Scene != null; Contours_Scene = Contours_Scene.HNext)
{
if (Contours_Scene.Area > 25)
{
if (Contours_Scene.HNext != null)
{
MinIntersectionLine(Contours_Scene, Contours_Scene.HNext, ref MinIntersectionLineSegment);
Img_Result_Bgr.Draw(MinIntersectionLineSegment, new Bgr(Color.Green), 2);
}
Img_Result_Bgr.Draw(Contours_Scene, new Bgr(Color.Red), 1);
}
}
}
#endregion
imageBox1.Image = Img_Result_Bgr;
}
void MinIntersectionLine(Contour<Point> a, Contour<Point> b,ref LineSegment2D Line)
{
double MinDist = 10000000;
for (int i = 0; i < a.Total; i++)
{
for (int j = 0; j < b.Total; j++)
{
double Dist = Distance_BtwnPoints(a[i], b[j]);
if (Dist < MinDist)
{
Line.P1 = a[i];
Line.P2 = b[j];
MinDist = Dist;
}
}
}
}
double Distance_BtwnPoints(Point p, Point q)
{
int X_Diff = p.X - q.X;
int Y_Diff = p.Y - q.Y;
return Math.Sqrt((X_Diff * X_Diff) + (Y_Diff * Y_Diff));
}
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