当我尝试运行本教程时
，我在 samples::findFile() 上遇到了这个问题，但
我尝试了#include <opencv2/core/utility.hpp>
同样的问题，知道吗？
我收到此错误：
#include "opencv2/imgcodecs.hpp"
#include "opencv2/highgui.hpp"
#include <iostream>
using namespace cv;
// we're NOT "using namespace std;" here, to avoid collisions between the beta variable and std::beta in c++17
using std::cin;
using std::cout;
using std::endl;
int main(void)
{
double alpha = 0.5; double beta; double input;
Mat src1, src2, dst;
cout << " Simple Linear Blender " << endl;
cout << "-----------------------" << endl;
cout << "* Enter alpha [0.0-1.0]: ";
cin >> input;
// We use the alpha provided by the user if it is between 0 and 1
if (input >= 0 && input <= 1)
{
alpha = input;
}
src1 = imread(samples::findFile("LinuxLogo.jpg"));
src2 = imread(samples::findFile("WindowsLogo.jpg"));
if (src1.empty()) { cout << "Error loading src1" << endl; return EXIT_FAILURE; }
if (src2.empty()) { cout << "Error loading src2" << endl; return EXIT_FAILURE; }
beta = (1.0 - alpha);
addWeighted(src1, alpha, src2, beta, 0.0, dst);
imshow("Linear Blend", dst);
waitKey(0);
return 0;
}