[英]error: ‘imread’ was not declared in this scope
I am using OpenCV 4.0 from https://github.com/opencv/opencv/archive/4.0.0.zip Below is the code我正在使用来自https://github.com/opencv/opencv/archive/4.0.0.zip 的OpenCV 4.0 下面是代码
#include "opencv2/core.hpp"
#include <opencv2/core/utility.hpp>
#include "opencv2/highgui.hpp"
using namespace std;
using namespace cv;
int main(int argc, const char* argv[]){
Mat frame0 = imread("hallo");
return 0;
}
I compile it with我编译它
g++ -std=c++11 test.cpp -o test -I/home/user/opencv/modules/core/include/ -I/home/user/opencv/modules/highgui/include/ -L/home/user/opencv/build/lib -lopencv_objdetect -lopencv_features2d -lopencv_imgproc -lopencv_highgui -lopencv_core -lopencv_imgcodecs
It throws me error它让我出错
test.cpp: In function ‘int main(int, const char**)’:
test.cpp:11:32: error: ‘imread’ was not declared in this scope
Mat frame0 = imread("hallo");
Any direction on how to resolve it?关于如何解决它的任何方向?
put #include <opencv2/imgcodecs.hpp>
and use put
#include <opencv2/imgcodecs.hpp>
并使用
g++ -std=c++11 test.cpp -o test -I/home/user/opencv/modules/core/include/ -I/home/user/opencv/modules/gapi/include/ -I/home/user/opencv/modules/highgui/include/ -I/home/user/opencv/modules/imgcodecs/include/ -L/home/user/opencv/build/lib -lopencv_objdetect -lopencv_features2d -lopencv_imgproc -lopencv_highgui -lopencv_core -lopencv_imgcodecs
to compile will solve the problem编译将解决问题
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