ios - OpenCV findContours 崩溃

Question

我有这个代码:

mat.copyTo(tmpMat);
cvtColor(tmpMat, tmpMat, CV_BGR2GRAY);
cv::equalizeHist(tmpMat, tmpMat);
    cv::Mat browMat = tmpMat(eyebrowRect);
    std::vector<std::vector<Point> > contours;
    cv::findContours(browMat, contours, cv::RETR_LIST, cv::CHAIN_APPROX_NONE);

但它因以下错误而崩溃:

OpenCV Error: Assertion failed (type == type0 || (CV_MAT_CN(type) == CV_MAT_CN(type0) && ((1 << type0) & fixedDepthMask) != 0)) in create, file /Users/robin/Projects/OpenCVForiPhone/opencv/opencv/modules/core/src/matrix.cpp, line 1249 terminate called throwing an exception

我认为我的 Mat 已经处于 1 channel 灰度，因为 cvtColor 调用......

我该如何解决这个问题？

Answer 1

代替:

std::vector<std::vector<Point> > contours;

你试过吗？

std::vector<std::vector<cv::Point> > contours;