无法将OpenCV 16位灰度图像写入/显示到磁盘

Question

I have a 2D unsigned short array from which I am trying to create a 16-bit grayscale image using the OpenCV. The code tried is shown below. But when I try to display or save to disk I get a black image with all pixel values zeros.

unsigned short Img_2D_array [SIZE_X][SIZE_Y];
for(int vr=1; vr<20; vr++)
    {
        for(int vc=1; vc<16; vc++)
        {
          Img_2D_array[(vr)][(vc)] = (unsigned short)(varPixelValue);
        }
    }
Mat var_mat = Mat(SIZE_X,SIZE_Y,CV_16UC1,&Img_2D_array);
imwrite("testImage.png",var_mat);

Note : Edited the code

Answer 1

There was no problem with the code snippet. But the viewer with which I was viewing the image didn't support 16-bit grayscale images, Nothing to do with the code.