[OSX] Can't find opencv_createsamples & opencv_traincascade

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I can suggest to use an earlier versions of OpenCV to train the cascades, I'm still using the traincascade in Opencv 2.4.10 and it is still perfectly working and suitable for OpenCV 3 and 4 detectors.

Take a look here: http://www.vision-ary.net/2015/03/lar...

Regards!

the cascade training tools can no more be built in opencv4, after a lot of arcane C-api code was removed.

since you cloned the github repo, you can easily fall back to the 3.4 branch, where those tools are still intact:

git checkout 3.4

then clean your build folder and restart with cmake.

note: it's 2019, and you should rather use some SSD,RCNN or yolo network for object detection, they're much faster / accurate.