SQRT function doesn't work on uint16 image type

So, my problem is: I have to load an image in png format an represent it as a matrix. I can do it with imread. But as soon as I performed function like sqrt it shows error message:

Undefined function 'sqrt' for input arguments of type 'uint16'

What should I do? Can somebody help?

Answer 1

[Star Strider]

Convert them to the double data type first.

[Imam]

Ok thanks a lot.

[Star Strider]

My pleasure!