I have an image and I am trying to find its rows and columns.
A = imread('lena.jpg'); nrows = size(A,1) ncols = size(A,2)
This is 3 dimensional matrix. Output of this 512 and 512. I know A is the matrix but how can I know value of for example A ? I want to use convolution filter to the image, obtain new matrix and turn it into a picture like "lena with blur".