how Calculate the number of object(submatrix) in matlab?

number of object =5

a=[0 0 0 0 0 0 0 0 0 0 0;0 0 1 1 1 1 0 1 0 1 1;0 0 1 0 1 0 1 1 1 0 0;0 1 1 1 1 0 1 0 1 0 0;1 0 1 0 1 0 1 1 1 0 0;1 0 1 1 1 1 0 0 0 0 0;0 0 0 0 0 0 1 1 1 0 0;0 1 1 1 1 0 1 0 1 0 0;0 0 1 0 1 0 1 1 1 0 0;0 0 1 1 1 0 0 0 0 0 0;0 1 0 0 0 0 0 0 0 0 0];

b=[1 1 1;1 0 1;1 1 1];

[ahmad saleh]

http://store2.up-00.com/2015-11/1448119545391.jpg

Answer 1

[Andrei Bobrov]

sum(conv2(a,b) == 8)

[ahmad saleh]

see this http://www.mathworks.com/help/images/labeling-and-measuring-objects-in-a-binary-image.html