How to fill Matrix with zeros in OpenCV?

Question

The code below causes an exception. Why?

#include 
#include 

using namespace cv;
using namespace std;

void mai         


        

Answer 1

You can choose filling zero data or create zero Mat.

1. Filling zero data with setTo():

   img.setTo(Scalar::all(0));
   

2. Create zero data with zeros():

   img = zeros(img.size(), img.type());
   

The img changes address of memory.