OpenCV错误：错误标志

Question

I'm working in opencv on some methodes but keep getting the following error:

OpenCV Error: Bad flag(parameter or structure field) (unrecognized or unsupported array)

Here is the code:

void RafiTextLineExtractor::eraseMargins(){


    Mat img = _image.clone();
    threshold(img, img, 100, 200, CV_THRESH_BINARY_INV);

    BinaryComponentExtractor bn;
    bn.setImage(&DImage(img));
    vector<ConnectedComponent*> components;

    bn.extract(components);

    namedWindow("components",CV_WINDOW_NORMAL);
    imshow("components", img);

}

void  BinaryComponentExtractor::extract(vector<ConnectedComponent*>& components){
    vector<vector<Point>> contours;
    vector<Vec4i> hierarchy;
    Mat mat = _image->getMat().clone();
    cv::findContours(mat, contours, hierarchy, CV_RETR_TREE, CV_CHAIN_APPROX_NONE, Point(0, 0) );
    collectComponents(contours, hierarchy, components);
} 

void setImage(DImage* img) { _image = img; } 

Also, when I debug the project it does not seem to pass the image (in bn.setImage() ..) any Ideas why that happens?

regards.

Answer 1

your function returns None. so you're trying to show None.