未定义标识符imread包含在哪个头文件里

可以加上万能头文件模板

#include <stdio.h>

#include <tchar.h>

#include <iostream>

#include <fstream>

#include <opencv2/opencv.hpp>

#define CV_VERSION_ID CVAUX_STR(CV_MAJOR_VERSION) CVAUX_STR(CV_MINOR_VERSION) CVAUX_STR(CV_SUBMINOR_VERSION)

#ifdef _DEBUG

#define cvLIB(name) "opencv_" name CV_VERSION_ID "d"

#else

#define cvLIB(name) "opencv_" name CV_VERSION_ID

#endif

#pragma comment( lib, cvLIB("core") )

#pragma comment( lib, cvLIB("imgproc") )

#pragma comment( lib, cvLIB("highgui") )

#pragma comment( lib, cvLIB("flann") )

#pragma comment( lib, cvLIB("features2d") )

#pragma comment( lib, cvLIB("calib3d") )

#pragma comment( lib, cvLIB("gpu") )

#pragma comment( lib, cvLIB("legacy") )

#pragma comment( lib, cvLIB("ml") )

#pragma comment( lib, cvLIB("objdetect") )

#pragma comment( lib, cvLIB("ts") )

#pragma comment( lib, cvLIB("video") )

#pragma comment( lib, cvLIB("contrib") )

#pragma comment( lib, cvLIB("nonfree") )

拿走吧，应该能都解决opencv各个版本的问题

cv::是命名空间，如果程序头部添上using namespace cv那么imread和cv::imread就一样了。

函数imread用于读取图片文件中的数据。在matlab的命令窗口中输入doc imread或者help imread即可获得该函数的帮助信息。

调用格式

A = imread(filename,fmt)

[X,map] = imread(filename,fmt)

[...] = imread(filename)

[...] = imread(URL,...)

[...] = imread(...,idx) (CUR, GIF, ICO, and TIFF only)

[...] = imread(...,'PixelRegion',{ROWS, COLS}) (TIFF only)

[...] = imread(...,'frames',idx) (GIF only)

[...] = imread(...,ref) (HDF only)

[...] = imread(...,'BackgroundColor',BG) (PNG only)

[A,map,alpha] = imread(...) (ICO, CUR, and PNG only

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