Cvt :: Color中的C ++ OpenCV異常斷言失敗（scn == 3 || scn == 4）

Question

我當前遇到一個令人討厭的錯誤，我不知道該如何修復自己，該錯誤僅在我開始不使用Visual Studio 2017中的調試模式並發布時才啟動。 我正在嘗試獲取我的openCV代碼，以根據以下示例識別棋盤格角，以幫助校准相機： http : //aishack.in/tutorials/calibrating-undistorting-opencv-oh-yeah/這是我專門編寫的代碼有：

// ConsoleApplication2.cpp : Defines the entry point for the console 
application.
//

#include "stdafx.h"
#include <opencv2\videoio.hpp>
#include <opencv2\highgui.hpp>
#include <opencv\cv.hpp>
#include <opencv\cv.h>
#include <iostream>
#include <stdio.h>


using namespace cv;
using namespace std;

int main (){
int numBoards = 0;
int numCornersHor;
int numCornersVer;

printf("Enter number of corners along width: ");
scanf_s("%d", &numCornersHor);

printf("Enter number of corners along height: ");
scanf_s("%d", &numCornersVer);

printf("Enter number of boards: ");
scanf_s("%d", &numBoards);

int numSquares = numCornersHor * numCornersVer;
Size board_sz = Size(numCornersHor, numCornersVer);

VideoCapture capture = VideoCapture("rtsp://172.16.127.28:554/mpeg4");

vector<vector<Point3f>> object_points;
vector<vector<Point2f>> image_points;

vector<Point2f> corners;
int successes = 0;

Mat image;
Mat gray_image;
capture >> image;

vector<Point3f> obj;
for (int j = 0; j < numSquares; j++)
    obj.push_back(Point3f(j / numCornersHor, j%numCornersHor, 0.0f));

while (successes < numBoards) {
    cvtColor(image, gray_image, CV_BGR2GRAY);

    bool found = findChessboardCorners(image, board_sz, corners, CV_CALIB_CB_ADAPTIVE_THRESH | CV_CALIB_CB_FILTER_QUADS);

    if (found) {
        cornerSubPix(gray_image, corners, Size(11,11), Size(-1, -1), TermCriteria(CV_TERMCRIT_EPS | CV_TERMCRIT_ITER, 30, 0.1));
        drawChessboardCorners(gray_image, board_sz, corners, found);
    }

    imshow("win1", image);
    imshow("win2", gray_image);

    capture >> image;
    int key = waitKey(1);

    if (key == 27)

        return 0;

    if (key == ' ' && found != 0){
        image_points.push_back(corners);
        object_points.push_back(obj);

        printf("Snap stored!");

        successes++;

        if (successes >= numBoards)
            break;
    }
}

Mat intrinsic = Mat(3, 3, CV_32FC1);
Mat distCoeffs;
vector<Mat> rvecs;
vector<Mat> tvecs;

intrinsic.ptr<float>(0)[0] = 1;
intrinsic.ptr<float>(1)[1] = 1;

calibrateCamera(object_points, image_points, image.size(), intrinsic, distCoeffs, rvecs, tvecs);

Mat imageUndistorted;
while (1) {
    capture >> image;
    undistort(image, imageUndistorted, intrinsic, distCoeffs);

    imshow("win1", image);
    imshow("win2", imageUndistorted);
    waitKey(1);
}

capture.release();

return 0;
}

這是我最終得到的輸出：

warning: Error opening file 
(/build/opencv/modules/videoio/src/cap_ffmpeg_impl.hpp:834)
warning: rtsp://172.16.127.28:554/mpeg4 
(/build/opencv/modules/videoio/src/cap_ffmpeg_impl.hpp:835)
OpenCV(3.4.1) Error: Assertion failed (scn == 3 || scn == 4) in cv::cvtColor, 
file C:\build\master_winpack-build-win64- 
vc15\opencv\modules\imgproc\src\color.cpp, line 11147

當我進入發布模式而不是調試時，這才真正成為一個問題，我不知道這里到底發生了什么。 我顯然希望提供一個具體的答案，但是即使只是專門針對此情況的一般指導也將受到贊賞，如果需要更多詳細信息，我很樂意將其添加到本帖子中。 我還是C ++，Visual Studio和OpenCV的新手，因此請記住這一點。

編輯：奇怪的是，它引用的文件路徑也不存在，除非它引用了我的包含路徑中的內容，否則C：/目錄中沒有構建文件夾？

編輯2： OpenCV錯誤的答案：斷言失敗（scn == 3 || scn == 4）在cv :: cvtColor中，文件.. \\ .. \\ .. \\ .. \\ opencv \\ modules \\ imgproc \\ src \\ color.cpp，第3737行沒有解決我的問題，嘗試使用該解決方案會產生新的錯誤：

warning: Error opening file 
(/build/opencv/modules/videoio/src/cap_ffmpeg_impl.hpp:834)
warning: rtsp://172.16.127.28:554/mpeg4 
(/build/opencv/modules/videoio/src/cap_ffmpeg_impl.hpp:835)
OpenCV(3.4.1) Error: Assertion failed (dims <= 2 && step[0] > 0) in 
cv::Mat::locateROI, file C:\build\master_winpack-build-win64- 
vc15\opencv\modules\core\src\matrix.cpp, line 760

我還應該提到，根據Visual Studio，在所有情況下，該異常都發生在main.cpp的第52行：

bool found = findChessboardCorners(image, board_sz, corners, 
CV_CALIB_CB_ADAPTIVE_THRESH | CV_CALIB_CB_FILTER_QUADS);

Answer 1

事實證明，在rtsp流中，我試圖從已關閉的IP中獲取視頻流，由於沒有要處理的圖像而導致了異常。 我將其交換到啟動狀態，並驗證了它可用於發布和調試，感謝您的所有幫助！