运行此代码时
int main(int argc, char *argv[])
{
vector<cv::Mat> imgs(argc - 1);
for (auto i = 1; i < argc; ++i)
{
cv::Mat img = cv::imread(argv[i]);
cv::Mat dst;
cv::GaussianBlur(img, dst, cv::Size(3, 3), 0, 0, cv::BORDER_DEFAULT);
cv::Sobel(dst, dst, -1, 1, 1);
imgs.push_back(dst);
}
for (auto i = 1; i < argc; ++i)
{
string filename(argv[i]);
filename[0] = toupper(filename[0]);
filename.end()[-5] = 'a';
cv::imwrite(filename, imgs[i]);
}
}
我收到以下错误消息：
libc ++ abi.dylib：以类型未捕获的异常终止 cv :: Exception：OpenCV（4.3.0） /tmp/opencv-20200408-5080-l00ytm/opencv-4.3.0/modules/imgcodecs/src/loadsave.cpp:738： 错误：（-215：声明失败）函数'imwrite'中的__img.empty（）
我不知道我在做什么错。
应该
You don't create the vector at the required size and then use
push_back.Either create the vector at zero size and use
push_backto add items to it, or create the vector at the required size and use subscripting to assign items to it.就像Gerardo Zinno所说的那样，您在最终的for循环中犯了一个错误。
应该