Step1 Install OpenCV via Homebrew
$ brew install opencv
$ brew install -v cmake
opencv 4.5.0_3
will be installed.
Step2 Set Header Search Paths
Build Settings
> Search Header Search Paths
Add this to paths and select recursive
/usr/local/Cellar/opencv/4.5.0_3/include
Step3 Add .dylib
to Link Binary With Libraries
Technically, you don't need to pass all .dylib
, but in this case, I passed all .dylib
under /usr/local/Cellar/opencv/4.5.0_3/lib
.
Step 4 Build code
#include <opencv2/opencv.hpp>
#include <iostream>
using namespace cv;
int main(){
cv::Mat imMat(400,400, CV_8UC3);
for(int y = 0 ; y < imMat.rows; y++){
for(int x = 0 ; x < imMat.cols; x++){
cv::Vec3b &p = imMat.at<cv::Vec3b>( y, x);
p[0] = x;
p[1] = y;
p[2] = (int)((x+y)/2);
}
}
imshow("openCVTest",imMat);
waitKey(0);
return 0;
}
If you can build, you will see ↓
Top comments (2)
Hi,
Thank you for this working installation. This is all very well, but how do you export this program to another computer without having to reinstall all OpenCV on this computer? This is a problem I currently have: when launching the program (the built program) on another computer where OpenCV is not installed, it does not work:
It claims that the Dylibs be placed in /usr/local/opt/opencv/lib/xxx.dylib, although I put them in the program folder. Is there a setting to be made in Xcode to allow the export to another computer (without having to reinstall everything)? Do you have a solution to avoid reinstalling all OpenCV on each computer where the program is copied?
Thanks.
Probably, you will need to use static libraries.