Figure Recognition (number recognition from image) Recgnize number 4 (four)

Hi i have a project on Matlab. I'm dealing with Figure Recognition, i just found the figure in image but i'm new to matlab. In the image as you can see there is a number (4). How can i recognize that it is four(4). Which methods can i use to recognize it?

Answer 1

[Emanuele Sortino]

I know that after 2 years it's probably late, but I would have used bwmorph(BW,'skel',inf) to make that figure as similar as possible to a thin 4. Then maybe I would have compared it to a matrix that has the figure 4 as 1 and 0.. but not sure if it'd work. but could be an approach