conv2: First and second arguments must be numeric or logical

I continue to get the same issue although I have two matrices using only integers.

h1 = {-1, -2, -1; 0, 0, 0; 1, 2, 1};

ogI = imread('image.jpeg');

I = rgb2gray(ogI);

I1 = conv2(I, h1, 'same');

imshow(I1);

Even if I set 'I' to a single or double inside of the function it does not work. This may be trivial but anything would help, thank you.

Answer 1

[Ameer Hamza]

You are defining h1 as a cell array. Define it as a numeric array

h1 = [-1, -2, -1; 0, 0, 0; 1, 2, 1]; % use square brackets

[Ryan Constantine]

Thank you! It was trivial. facepalm

[Ameer Hamza]

I am glad to be of help!