How to convert image array to double array?

filter.*image is not working, because filter is a double array and image is an integer array. I think MATLAB should convert integer to double by default in this case, but how can I do by hand?

[Stephen23]

try using double.

Answer 1

[Viju]

Take your integer array - let's call it 'intArray' and do the following:

dblArray = double(intArray);