绘制一条线来跟踪对象 [英] draw a line for tracking the object

问题描述

CvSeq* circles = cvHoughCircles( gray, cvCreateMemStorage(0), CV_HOUGH_GRADIENT, 2 , gray->height/6, 3 );
printf ("%d circles detected\n", circles->total);
int *px = new int[circles->total];
int *py = new int[circles->total];
if(circles->total > 0) {
int i = 0;
float * p = (float*)cvGetSeqElem( circles, i );
int i=0;
px[i]=cvRound(p[0]);
py[i]=cvRound(p[1]);
int radius = cvRound(p[2]);
int measurement[] = { px[i], py[i] };

以类似的方式，我想用opencv c ++画一条线而不是圆圈。任何人都可以帮忙。

In the similar way i want to draw a line instead of circle using opencv c++. Can anyone help please.

推荐答案

你的圈子的坐标存储在 px 和吡啶。因此，您只需使用这些坐标就可以使用行 [ ^ ]功能。



您还应该考虑使用新的openCV API。您正在使用旧版C的openCV。现在有一个新的C ++版本，这使得许多任务更容易实现，理解并且更不容易出错。

The coordinates of your circle are stored in px and py. So you can simply use these coordinates to draw a line with the line[^] function.

You should also consider using the new openCV API. You are working with the older C version of openCV. There exists a new C++ version for quite some time now which makes many tasks easier to implement, understand and also less error prone.

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