Create a single image from images array - c++

Question

Hi I'm trying to create a single image from multiple images in opencv.
images I use are the same size.
what I do is reshaping them to single line and then try to merge them together with my new image.
I create new image with size of 2 images and pass the array but I recieve error EXC_BAD_ACCESS(code=1, address = ..)
note: sizes of images are correct
size of single image : [170569 x 1]
size of new_image : [170569 x 2]
my code is below.
thank you
int main(){
Mat image[2];
image[0]= imread("image1.jpg",0);
image[1]= imread("image2.jpg",0);
image[0] = image[0].reshape(0, 1); //SINGLE LINE
image[1] = image[1].reshape(0, 1); //SINGLE LINE
int size = sizeof(image)/sizeof(Mat);
Mat new_image(image[0].cols,size,CV_32FC1,image);
}

Answer 1

Mat new_image;
vconcat(image[0],image[1],new_image);

Answer 2

If I understand well than you need to concatenate 2 image of same size into one Mat. I wrote this a very quick code to perform this task.
U can change the argument to the function to be a pointer and add other handlers to care about the variant size image.
#include <iostream>
#include <opencv2/opencv.hpp>
#include <opencv2/highgui/highgui.hpp>
cv::Mat cvConcatenateMat(const cv::Mat &image1, const cv::Mat &image2, bool isCol CV_DEFAULT(true)){
if (isCol) {
cv::Mat mergeMat = cv::Mat(image1.rows, image1.cols + image2.cols, image1.type());
for (int j = 0; j < image1.rows; j++) {
for (int i = 0; i < image1.cols; i++) {
mergeMat.at<cv::Vec3b>(j,i) = image1.at<cv::Vec3b>(j,i);
}
for (int i = image1.cols; i < mergeMat.cols; i++) {
mergeMat.at<cv::Vec3b>(j,i) = image2.at<cv::Vec3b>(j,i);
}
}
return mergeMat;
} else {
cv::Mat mergeMat = cv::Mat(image1.rows + image2.rows, image1.cols, image1.type());
for (int j = 0; j < image1.cols; j++) {
for (int i = 0; i < image1.rows; i++) {
mergeMat.at<cv::Vec3b>(i,j) = image1.at<cv::Vec3b>(i,j);
}
for (int i = image1.rows; i < mergeMat.rows; i++) {
mergeMat.at<cv::Vec3b>(i,j) = image2.at<cv::Vec3b>(i-image1.rows,j);
}
}
return mergeMat;
}
}
int main(int argc, const char * argv[]) {
cv::Mat image1 = cv::imread("img1.jpg");
cv::Mat image2 = cv::imread("img2.jpg");
cv::resize(image2, image2, image1.size());
cv::Mat outImage = cvConcatenateMat(image1, image2, false);
cv::imshow("out image", outImage);
cv::waitKey(0);
return 0;
}