黑色的句子可忽略，红色的为必须

因为在板子上编译opencv的时候遇到FFMPEG模块编译报错的情况，具体问题是：https://stackoverflow.com/questions/28319376/installing-opencv-in-ubuntu-14-10，所以直接下载编译好的opencv来用

核心板全志V40，底板BV3，系统ubuntu mate 15.04

qt的安装直接用

apt-get install qtcreator

在Compiler path选择路径为：/usr/bin/gcc,点Apply应用设置

选择Kits，此时可以看到Complier已经选择好了GCC

直接下载已经编译好的opencv库

sudo apt-get install libopencv-dev

dpkg -L libopencv-dev

/usr/lib/arm-linux-gnueabihf

包含目录在

/usr/include
/usr/include/opencv
/usr/include/opencv2

打开qt新建工程，调用opencv库进行测试

修改.pro文件，添加：

INCLUDEPATH += /usr/include          \    
               /usr/include/opencv   \    
               /usr/include/opencv2    
    
LIBS += /usr/lib/arm-linux-gnueabihf/libopencv_calib3d.so \  
	/usr/lib/arm-linux-gnueabihf/libopencv_core.so \  
	/usr/lib/arm-linux-gnueabihf/libopencv_features2d.so \  
	/usr/lib/arm-linux-gnueabihf/libopencv_flann.so \  
	/usr/lib/arm-linux-gnueabihf/libopencv_highgui.so \  
	/usr/lib/arm-linux-gnueabihf/libopencv_imgproc.so \  
	/usr/lib/arm-linux-gnueabihf/libopencv_ml.so \  
	/usr/lib/arm-linux-gnueabihf/libopencv_objdetect.so \  
	/usr/lib/arm-linux-gnueabihf/libopencv_photo.so \  
	/usr/lib/arm-linux-gnueabihf/libopencv_stitching.so \  
	/usr/lib/arm-linux-gnueabihf/libopencv_superres.so \   
	/usr/lib/arm-linux-gnueabihf/libopencv_video.so \  
	/usr/lib/arm-linux-gnueabihf/libopencv_videostab.so