How do I search for an image inside of a larger image?

I have two images. One is an image of Waldo and the other is a much larger image with him hiding somewhere in the image. My goal is to create a program that can find him only using the functions length, size, imread, and image. Also, implied loops like the colon operator are not allowed. Can anyone guide me into the right direction? I am not looking for a solution, just an idea of where to start. Thanks!

Answer 1

[KSSV]

https://in.mathworks.com/matlabcentral/answers/266446-how-to-calculate-degree-of-similarity-between-two-images

https://stackoverflow.com/questions/27140062/checking-to-see-if-an-image-is-the-same

[Andrew Padilla]

Hi. Neither of these links will work. Both use some of the restrictions that I said I could not use in my post. Any other alternatives? I am thinking of using for loops and a few if statements but everything I have tried has not worked so far.