OpenCV:contourArea断言失败 [英] OpenCV: contourArea assertion failed

问题描述

当我尝试启动我的应用程序时，它在执行ContourArea时意外崩溃.

when I try to start my application it crashes unexpectedly while executing contourArea.

这是错误:

OpenCV Error: Assertion Failed (contour.checkVector(2) >= 0 && (contour.depth() ==CV_32F || contour.depth() == CV_32S)) in unknown function, file ..\..\..\src\opencv\modules\imgproc\src\contours.cpp, line 1904

我的程序很简单: 1.从相机抓取框架， 2.高斯和中值滤波， 3.形态开放， 4.阈值 5. findContours， 6.绘制较大的轮廓线

My program is simple: 1.catch frame from camera, 2. gaussian and median filtering, 3. morphological opening, 4. threshold, 5. findContours, 6. draw the contourn with bigger area

这是我的代码:

#include <opencv2/opencv.hpp>
#include <stdio.h>

using namespace cv;
using namespace std;

Mat mask(480,640, CV_8UC1);
vector<Vec4i> hierarchy;
vector<vector<Point> > contours;
vector<Point> my_contourn;

int main(){
VideoCapture camera(0);

if(!camera.isOpened()){
    return -1;
}

while(1){
    Mat cameraframe,filtered_img,mask2;
    camera >> cameraframe; 

    GaussianBlur(cameraframe,filtered_img,Size(11,11),0,0);
    medianBlur(filtered_img,filtered_img,11);
    cvtColor(filtered_img,filtered_img,CV_BGR2HSV);
    inRange(filtered_img, Scalar(0, 76, 97), Scalar(20, 143, 205), mask);
    morphologyEx(mask,mask,MORPH_OPEN,getStructuringElement(MORPH_RECT,Size(9,9),Point(4,4)));
    GaussianBlur(mask,mask,Size(3,3),0,0);
    dilate(mask,mask,getStructuringElement(MORPH_ELLIPSE,Size(7, 7),Point(0, 0) ));


    mask.copyTo(mask2);
    findContours(mask2,contours,hierarchy,CV_RETR_EXTERNAL,CV_CHAIN_APPROX_SIMPLE,Point(0, 0));

    double area,max_area=0.0;


    for(int i=0;i<contours.size();i++){

        area = fabs(contourArea(contours[i]));
        if (area>max_area)
        {
            max_area=area;
            my_contourn=contours[i];
        }
    }

    drawContours( mask, my_contourn, 10, Scalar(255,0,0), 2, 8);

    imshow("my cont",mask);

    if(waitKey(30)>=0)
        break;
}
return 0;
}

我该如何解决?

推荐答案

我确认这是VS2012问题.在VS2010上，一切都很好.

I confirm that is a VS2012 problem. On VS2010 everythings is fine.

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