Question

我正在尝试编写一个程序来在C ++环境中使用OpenCV检测图像中的轮廓。

问题在于我没有得到编译错误，而是出现运行时错误。我不知道为什么;我按照本书和OpenCV文档资源来构建下面的代码，它应该可以正常工作，但它没有...任何关于可能出错的想法......？

#include "iostream"
#include<opencv\cv.h>
#include<opencv\highgui.h>
#include<opencv\ml.h>
#include<opencv\cxcore.h>
#include <iostream> 
#include <string> 
#include <opencv2/core/core.hpp> // Basic OpenCV structures (cv::Mat)
#include <opencv2/highgui/highgui.hpp> // Video write

using namespace cv;
using namespace std;

Mat image; Mat image_gray; Mat image_gray2; Mat threshold_output;
int thresh=100, max_thresh=255;

int main(int argc, char** argv) {

//Load Image
image =imread("C:/Users/Tomazi/Pictures/Opencv/ayo.bmp");

//Convert Image to gray & blur it
cvtColor( image, 
    image_gray, 
    CV_BGR2GRAY );

blur( image_gray, 
    image_gray2,
    Size(3,3) );
//Threshold Gray&Blur Image
threshold(image_gray2, 
    threshold_output, 
    thresh, 
    max_thresh, 
    THRESH_BINARY);

//2D Container
vector<vector<Point>> contours;

//Fnd Countours Points, (Imput Image, Storage, Mode1, Mode2, Offset??)
findContours(threshold_output,
    contours, // a vector of contours
    CV_RETR_EXTERNAL, // retrieve the external contours
    CV_CHAIN_APPROX_NONE,
    Point(0, 0)); // all pixels of each contours    

// Draw black contours on a white image
Mat result(threshold_output.size(),CV_8U,Scalar(255));

drawContours(result,contours,
    -1, // draw all contours
    Scalar(0), // in black
    2); // with a thickness of 2


    //Create Window
char* DisplayWindow = "Source";
namedWindow(DisplayWindow, CV_WINDOW_AUTOSIZE);
imshow(DisplayWindow, contours);


waitKey(0);
return 1;
}

Answer 1

我打赌你使用的是MSVC IDE。无论如何，你的代码有很多问题，我已经在Stackoverflow上覆盖了大部分代码。他们走了：

我怀疑你的问题是imread()失败了，因为它找不到文件。上面的链接可以帮助您解决问题。

图像轮廓检测错误：OpenCV，C ++

1 个答案: