運行opencv3.3 sample

opencv3.3 sample是個學習opencv的最佳方法，運行示例查看運行結果方法如下

1.打開D:\opencv3.3\samples\cpp\example_cmake

2.將需要運行的示例cpp文件copy至此，如：videocapture_basic.cpp

3.創建目錄如：video-build

4.修改CMakeLists.txt最后2行為：

# Declare the executable target built from your sources
add_executable(videocapture_basic videocapture_basic.cpp)

# Link your application with OpenCV libraries
target_link_libraries(videocapture_basic ${OpenCV_LIBS})

5.cd至video-build

6.執行cmake -G "MinGW Makefiles" ..

7.make

8.運行videocapture_basic.exe