Ubuntu compiler error: Unable to open 'raise.c'

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Summary: File Path File not found error caused

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I. Description of the problem:

Document:

1.jpg and Try.cpp in HelloOpencv directory.

Try.cpp

#include<opencv2/opencv.hpp>
using namespace cv;
int main()
{
    Mat srcImage=imread("1.jpg");
    imshow("Origin",srcImage);
    waitKey(0);
    return 0;
}

1.jpg

Compilation failed

the reason:

It can not find 1.jpg. The current path prefix is ​​the outermost directory, the directory that is under the Main, but also in 1.jpg into a layer that HelloOpenCV in.

Second, the solution

1. moved out of the picture 1.jpg

2. Use an absolute path

Right picture, copy absolute path (Copy Path)