Hi i have c++ code of opencv project , i will run this code by java jni my os is ubuntu , i create .so file by c++ code and try to run by java , but show this error :
main.so: undefined symbol: _ZN2cv6imreadERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEi
my c++ code :
include <iostream>
include "jni.h"
include "OpencvCpp.h"
include <opencv2 core="" core.hpp="">
include <opencv2 highgui="" highgui.hpp="">
include <opencv2 opencv.hpp="">
include <stdio.h>
include <string.h>
using namespace cv; using namespace std;
JNIEXPORT jfloat JNICALL Java_OpencvCpp_myFirsttest (JNIEnv *, jobject){
//int main() {
Mat img, img2;
string filename = "/home/mohsen/Desktop/1.jpg";
img = imread(filename);
float m;
for (int i = 0; i < 96; ++i) {
for (int j = 0; j < 96; ++j) {
m = m + img.at<uchar>(i, j);
}
}
cout << m;
return m;
}
my java.h code : /* DO NOT EDIT THIS FILE - it is machine generated */
include "jni.h"
/* Header for class OpencvCpp */
ifndef _Included_OpencvCpp
define _Included_OpencvCpp
ifdef __cplusplus
extern "C" {
endif
/* * Class: OpencvCpp * Method: myFirsttest * Signature: ()F */ JNIEXPORT jfloat JNICALL Java_OpencvCpp_myFirsttest (JNIEnv *, jobject);
ifdef __cplusplus
}
endif
endif
my java code : public class Main {
static {
System.load("/home/mohsen/IdeaProjects/DllTest/src/main.so");
}
public static void main(String[] args) {
System.out.println(new OpencvCpp().myFirsttest());
}
}
please help me!
