libopencv-dev missing functions and members

[Mariusmssj4]

Hi,

I am working on getting some OpenCv code working on the Pi.

I got OpenCV installed using

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sudo apt-get install libopencv-dev

and using RaspiCam: C++ API for using Raspberry camera

the code I am using is quite simple :

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#include <ctime>
#include <iostream>
#include <raspicam/raspicam_cv.h>

using namespace std; 

int main(int argc,char **argv)
{
	//Load Image//////////////////////////////
	
	cv::Mat img = cv::imread("../raspicam_cv_image.jpg");

	cv::Mat element = cv::getStructuringElement(cv::MORPH_RECT, cv::Size(5, 5));
	
	cv::erode(img, img, element);
	
    //save image 
    cv::imwrite("../tested.jpg", img);
    cout<<"Image saved at tested.jpg"<<endl;
}

using :

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 g++ opencv_test.cpp -o  opencv_test -I/usr/local/include/ -lraspicam -lraspicam_cv -lmmal -lmmal_core -lmmal_util -lopencv_core -lopencv_highgui 

but I keep getting these errors:

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open_test.cpp: In function  int main(int ,char **):
open_test.cpp: 14:20: error: getStructuringElement is not a member of cv
open_test.cpp: 14:46: error: MORPH_RECT is not a member of cv
open_test.cpp: 16:2: error: erode is not a member of cv
 

Not sure what's wrong, any ideas?

[Mariusmssj4]

Fixed it

needed to add

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#include "opencv2/imgproc/imgproc.hpp"

to my .cpp file

and

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-lopencv_imgporc

to the g++ command