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How can i make the image like this? I am thinking about the flow like this.
First, make a new Mat type data 256*256.
Second, fill the image with the average value of small image.
Third, copy the small image in the middle of the new image.
Is that rignt? and also how can i copy the small image in the middle of the new image? T.T
You can use the function copyMakeBorder
#include "opencv2/imgproc.hpp"
#include "opencv2/highgui.hpp"
#include "iostream"
using namespace cv;
using namespace std;
int main(int argc, char* argv[])
{
Mat src = imread(argv[1]);
if (src.empty())
{
cout << endl
<< "ERROR! Unable to read the image" << endl
<< "Press a key to terminate";
cin.get();
return 0;
}
imshow("Source image", src);
Mat dst;
Size dst_dims = Size(256,256);
int top = ( dst_dims.height - src.rows ) / 2;
int bottom = ( ( dst_dims.height + 1 ) - src.rows ) / 2;
int left = ( dst_dims.width - src.cols ) / 2;
int right = ( ( dst_dims.width + 1 ) - src.cols ) / 2;
copyMakeBorder(src, dst, top, bottom, left, right, BORDER_CONSTANT, Scalar(127,127,127));
imshow("New image", dst);
waitKey();
return 0;
}
Asked: 2016-07-13 18:16:17 -0600
Seen: 720 times
Last updated: Jul 13 '16