error: imread is not a member of cv

Question

I use OpenCV 3.0 and Ubuntu 14.04. I'm trying to compile a few codes on ubuntu using opencv. I get error

"error: 'imread' is not a member of 'cv'"

Due to my previous search knowledge, I tried compiling by adding "highgui.h".

I use:

$g++ main.cpp HOG.cpp HOGFeaturesOfBlock.cpp -I/usr/local/include/opencv -lml -lcvaux -highgui -lcv -lcxcore -o featureExtractor

on terminal to compile.

Any suggest? Regards. Can.

Solution 1

The following commands should work. If it doesn't work you should check if you set the include/lib files correctly.

#include <opencv2\highgui\highgui.hpp>
#include <opencv2\core\core.hpp>
#include <opencv\cv.hpp>

using namespace cv;

Mat image = imread(filename, CV_LOAD_IMAGE_COLOR);

Solution 2

#include <opencv2/imgcodecs.hpp> 

solved the problem which contains the imread function

Comments

[Miki]

1) you don't need #include <opencv\cv.hpp>, 2) you can just use #include <opencv2/opencv.hpp> 3) without a main this won't work, 4) Opencv 3.0 parameter is now called IMREAD_COLOR

[CanCam]

I included those headers to my code, but this time I get another error, /usr/bin/ld cannot find -lml and same error for other libraries