Question

我正在尝试编写一个使用opencv从图像读取像素值并将其打印在控制台或其他窗口中的程序。我的程序已成功编译并链接，但是在Visual stdio中运行该程序时，出现以下错误提示。

“ Project1.exe中0x00007FFCA550A839处出现未处理的异常：Microsoft C ++异常：内存位置0x0000002F82CFEF60处的std :: bad_alloc。”

我已经尝试直接运行可执行文件。然后我收到此错误消息“调试错误。about（）已被调用”。这是我的main.cpp代码

'''c ++

    #include <stdlib.h>
    #include <SDL.h>
    #include <opencv2/opencv.hpp>
    #include <iostream>
    #include <vector>

using namespace cv;

int retColorRed(int x, int y)
{
    Mat img = imread("s1.jpg", 0);
    return img.at<Vec3d>(x, y)[0];
}

int retColorGreen(int x, int y)
{
    Mat img = imread("s1.jpg", 0);
    return img.at<Vec3b>(x, y)[1];
}

int retColorBlue(int x, int y)
{
    Mat img = imread("s1.jpg", 0);
    return img.at<Vec3b>(x, y)[2];
}



    #define WINDOW_WIDTH 200
    #define WINDOW_HEIGHT 300

    int main(int argc, char* args[]) {
        SDL_Event event;
        SDL_Renderer* renderer;
        SDL_Window* window;

        SDL_Init(SDL_INIT_VIDEO);
        SDL_CreateWindowAndRenderer(WINDOW_WIDTH, WINDOW_HEIGHT, 0,&window, &renderer);
        SDL_SetRenderDrawColor(renderer, 0, 0, 0, 0);
        SDL_RenderClear(renderer);


        int width = WINDOW_WIDTH;
        int height = WINDOW_HEIGHT;
        int horizonaltIter = 0, virticalIter = 0;

        while (virticalIter <= height)
        {
            while (horizonaltIter <= width) {
                int red = retColorRed(horizonaltIter,virticalIter);
                int green = retColorGreen(horizonaltIter, virticalIter);
                int blue = retColorBlue(horizonaltIter, virticalIter);
                SDL_SetRenderDrawColor(renderer, red, green, blue, 255);
                SDL_RenderDrawPoint(renderer, horizonaltIter, virticalIter);
                SDL_RenderPresent(renderer);
                horizonaltIter++;
            }
            virticalIter++;
        }



        while (1) {
            if (SDL_PollEvent(&event) && event.type == SDL_QUIT)
                break;
        }
    SDL_DestroyRenderer(renderer);
    SDL_DestroyWindow(window);
    SDL_Quit();
    return EXIT_SUCCESS;
}

'''

这是Visual Studio ide中显示的错误消息

“ Project1.exe中0x00007FFCA550A839处出现未处理的异常：Microsoft C ++异常：内存位置0x000000A6BD0FF1A0处的std :: bad_alloc。”

Answer 1

将while (horizonaltIter <= height) {更改为while (horizonaltIter <= width) {，它应该可以工作！

Project1.exe中0x00007FFCA550A839的未处理异常：Microsoft C ++异常：内存位置0x0000002F82CFEF60的std :: bad_alloc。发生

1 个答案: