A simple summary of the method of OpenCV accessing pixel values

OPENCV Accessing image pixel values

Briefly summarize the methods of accessing image pixel values in several data types in OpenCV, with mat type, iplimage type, Cvmat type. The following are for grayscale, color map is actually the operation of the corresponding three channels. 1. Mat type

for (int i = 0, i < img.rows; i++)
{for
 (int j = 0; J < Img.cols; J + +)
  {
    cout << (int) img.at& Lt;uchar> (i, J) << "";
  }
}

2. Iplimage type

iplimage* srcimg;
for (int i = 0, i < srcimg->height; i++)
{for
  (int j = 0; J < srcimg->width; J + +)
   {
     Temp = CVGET2D (Srcimg, I, J). Val[0];
      cout << temp << endl;
   }
}

3.CvMat type

void Printmat (cvmat* mat)//Print mat matrix
{for
    (int i = 0; i < mat->rows; i++)
    {for
        (int j = 0; J < ; mat->cols; J + +)
        {
            cout << cvmget (Mat, I, J) << "";
        }
        cout << Endl;
    }
}