how to count only adjacent(linked) 1's quantity in 7X7 matrix buffer using fpga?

hello.

i'm studying image processing using fpga.

i attached 7x7 matrix image.

yellow is 1 and white is 0.

normally i can count all 1's quantity in 7x7 matrix included un-linked 1, but i can't count only adjacent(linked) 1's quantity except un-linked 1.

would you let me know how to do?

if there are some solution like IP, where can i buy that one?

please help me.

thank you.

from korea.