.pro中加入：（注意对应路径）
INCLUDEPATH += F:\OpenCV\opencv\build\include\
F:\OpenCV\opencv\build\include\opencv\
F:\OpenCV\opencv\build\include\opencv2
LIBS += -LF:\OpenCV\opencv\build\x64\vc14\lib \
-lopencv_world343d \
-lopencv_world343 \
这里也很容易看到，我的OpenCV版本3.4.3