从函数崩溃返回，只有在代码中的某一点之后 [英] Returning from function crashing, only after a certain point in the code

问题描述

我无法弄清楚为什么当我返回时，我的功能会崩溃我的程序。我做了一些调试，喜欢从函数返回导致崩溃的时刻。

  void Find_contour $ b {
 // VAR 
 double threshold_val = 128; 
 int n_erode_dilate = 1; 
 Mat m = img_complete.clone（）; 
 
 cvtColor（m，m，CV_RGB2GRAY）; 
 blur（m，m，Size（5，5））; 
 threshold（m，m，threshold_val，255，CV_THRESH_BINARY）; 
 erode（m，m，Mat（），Point（-1，-1），n_erode_dilate）; 
 dilate（m，m，Mat（），Point（-1，-1），n_erode_dilate）; 
 
矢量<矢量< Point> >轮廓; 
 vector< Point>点数; 
 
 //返回这里是安全的****** 
 
 findContours（m，contour，CV_RETR_LIST，CV_CHAIN_APPROX_NONE）; 
 
 //在这之后返回崩溃****** 
 
 for（size_t i = 0; i  for（size_t j = 0; j< contours [i] .size（）; j ++）{
 Point p = contoururs [i] [j] 
 points.push_back（p）; 
} 
} 
 
 
 vector< vector< Point>> contours_poly（contours.size（））; 
 vector< Rect> boundRect（contours.size（））; 
 vector< Point2f> center（contours.size（））; 
 
 for（int i = 0; i  {
 approximatePolyDP（Mat（contoururs [i]），contoururs_poly [i] 3，true）; 
 boundRect [i] = boundingRect（Mat（contoururs_poly [i]））; 
} 
 
 // drawContours（img_contour，contour，idx，colors [idx％4]）; 
 
 for（int i = 0; i  {
 Scalar color = Scalar（rng.uniform（0，255），rng。 uniform（0，255），rng.uniform（0，255））; 
 drawContours（drawing，contour，i，color，2，8，CV_RETR_LIST，0，Point（））; 
 rectangle（drawing，boundRect [i] .tl（），boundRect [i] .br（），color，2，8，0） 
} 
 
} 
  

标记在哪里它是安全的返回和崩溃的地方，所以我假设它与我的载体有关的东西。

我可能只是缺少一些基本的，

编辑：嘿，我已经缩小了 findContours 。通过代码，在安全的地方返回让我到 inline void Mat :: release（函数，而之后的任何地方findContours 将我的注释为 // TEMPLATE FUNCTION _Destroy_range ，然后转到 void deallocate

图像检测中的0x51995042（ucrtbase.dll）未处理的异常2.exe：传递了无效的参数到一个考虑了无效参数致命的函数。

我还想补充一点，这个错误只发生在函数返回或结束时， findContour 期间的错误。

我对这个整个过程相当新，非常感谢大家的帮助。 / p>

解决方案

结果是，OpenCV 3.0.0和Visual Studio 2015有一点兼容性问题。

我已经尝试过Visual Studio 2013，一切正常。

感谢您的帮助，谢谢@ Simon Kraemer建议这样做。

I am having trouble figuring out why my function is crashing my program when I return from it. I did a bit of debugging and fond the moment where returning from the function causes it to crash.

void Find_contour()
{
//VAR
double threshold_val = 128;
int n_erode_dilate = 1;
Mat m = img_complete.clone();

cvtColor(m, m, CV_RGB2GRAY);
blur(m, m, Size(5, 5));
threshold(m, m, threshold_val, 255, CV_THRESH_BINARY);
erode(m, m, Mat(), Point(-1, -1), n_erode_dilate);
dilate(m, m, Mat(), Point(-1, -1), n_erode_dilate);

vector<vector<Point> > contours;
vector<Point> points;

    //returning here is safe******

findContours(m, contours, CV_RETR_LIST, CV_CHAIN_APPROX_NONE);

    //returning after here crashes******

for (size_t i = 0; i<contours.size(); i++) {
    for (size_t j = 0; j < contours[i].size(); j++) {
        Point p = contours[i][j];
        points.push_back(p);
    }
}


vector<vector<Point>> contours_poly(contours.size());
vector<Rect> boundRect(contours.size());
vector<Point2f> center(contours.size());

for (int i = 0; i < contours.size(); i++)
{
    approxPolyDP(Mat(contours[i]), contours_poly[i], 3, true);
    boundRect[i] = boundingRect(Mat(contours_poly[i]));
}

//drawContours(img_contour, contour, idx, colors[idx % 4]);

for (int i = 0; i< contours.size(); i++)
{
    Scalar color = Scalar(rng.uniform(0, 255), rng.uniform(0, 255), rng.uniform(0, 255));
    drawContours(drawing, contours, i, color, 2, 8, CV_RETR_LIST, 0, Point());
    rectangle(drawing, boundRect[i].tl(), boundRect[i].br(), color, 2, 8, 0);
}

}

Here is the function, I have labelled where the it is safe to return and where it crashes, so I am assuming it has something to do with my vectors there.

I may just be missing something basic, which is making it hard for me to look up, thanks in advance!

EDIT: Hey I have narrowed it down findContours. stepping through the code, returning at a safe spot takes me to inline void Mat::release( function, while anywhere after findContours takes me something commented as // TEMPLATE FUNCTION _Destroy_range. which then goes to void deallocate which at this points causes a break in my program. and has a message.

Unhandled exception at 0x51995042 (ucrtbase.dll) in Image detection 2.exe: An invalid parameter was passed to a function that considers invalid parameters fatal.

I would also like to add that this error only occurs when the function returns or ends, and there are no errors during findContour.

I am fairly new to this whole process, and am very appreciative of everyone's help.

解决方案

Turns out, there is a bit of a compatibility issue with OpenCV 3.0.0 and Visual Studio 2015.

I have tried it with Visual Studio 2013 and everything works perfectly.

thank you to those who helped, and thank you to @Simon Kraemer for suggesting this.

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