X is not a member of 'cv'异常解决_pp:241:17: error: ‘debuglevel’ is not a member of

一、X is not a member of 'cv'异常情况举例

1、实例一

//
'resize' is not a member of 'cv'
'cvtColor' is not a member of 'cv'
'putText' is not a member of 'cv'
'rectangle' is not a member of 'cv'
//

2、实例二

//
VideoTest.cpp:(.text+0x6f): undefined reference to `cv::VideoWriter::fourcc(char,char,char, char)'
VideoTest.cpp:(.text+0xc3): undefined reference to `cv::VideoWriter::open(cv::String const&, int, double, cv::Size_<int>, bool)'
VideoTest.cpp:(.text+0x103): undefined reference to `cv::namedWindow(cv::String const&, int)'
VideoTest.cpp:(.text+0x146): undefined reference to `cv::VideoCapture::read(cv::_OutputArray const&)'
VideoTest.cpp:(.text+0x1b1): undefined reference to `cv::imshow(cv::String const&, cv::_InputArray const&)'
//

二、解决办法

1、加上对应的头文件。

三、情况例举

1、实例一直接加上下面的头文件

//
#include "opencv2/imgproc/imgproc.hpp"
//

2、实例二直接加上下面的头文件

//
#include "opencv2/videoio.hpp"
//

致谢

1、 X is not a member of 'cv'异常解决

2、OpenCV resize is not a member of cv (OpenCV Basics)