OpenCV C ++ cv :: convexityDefects错误 [英] OpenCV C++ cv::convexityDefects error

问题描述

vector<Point> hull;
vector<Point> defects;
convexHull(Mat(largest),hull,false);
convexityDefects(largest,hull,defects);

* 最大是图像中我最大的轮廓

*largest is my largest contour in the image

但是凸性缺陷给了我这个错误断言失败(hull.checkVector(1，CV_32S)> 2)".有人请帮助我，我不想求助于使用C解决方案.

But the convexityDefects gives me this error "Assertion failed (hull.checkVector(1, CV_32S) > 2)". Someone please help me, I do not want to resort to using C solution.

已编辑

vector<int> hull;
vector<Point> defects;
convexHull(Mat(largest),hull,false);

vector<vector<int>> testhull;
testhull.push_back(hull);
convexityDefects(largest,testhull,defects);

在将其传递给凸性缺陷之前，我尝试使用类型vector<vector<int>>进行制造，但是凸性缺陷仍然给我错误断言失败(ptnum> 3)..".

I tried making it with the type vector<vector<int>> before passing it to convexityDefects but convexityDefects is still giving me error "Assertion failed (ptnum > 3)..".

推荐答案

convexityDefects的第二个参数必须是vector<vector<int>的类型，而您的是vector<Point>.

The second argument of convexityDefects has to be the type of vector<vector<int>, while yours is vector<Point>.

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