'imread' was not declared in this scope

在opencv3中，会报这个异常：

解决方法：

#include <opencv2/core/core.hpp>
   #include <opencv2/highgui/highgui.hpp>
using namespace cv;

  Mat imgMat = imread("20160802.jpeg");//const String* filename);

如果没有引用vc命名空间，则需要加cv::

  cv::Mat imgMat = cv::imread("20160802.jpeg");//const String* filename);

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'imread' was not declared in this scope

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