how can I use my function on 3*3 blocks?

hi I have a matrix ,I wanna use a function on 3*3 blocks. my function is: if in a block we watch just a one this block should return 1 but if all 9 elements of this block is zero this function should return 0 how can I do this in matlab?

...all the elements of this matrix is zero and one.

[Image Analyst]

Give examples of the 3x3 blocks that return 1 and 0. I especially don't understand the grammar of "if in a block we watch just a one this block should return 1". Exactly what returns a 1? Does this:

[.2 .3 .4
.3. .5 .6
.6 .7 .9]

Does this?

[0 0 1
0 0 0
0 0 0]

Answer 1

[Mohammad Abouali]

inputData=zeros(10,10);
inputData(randi(100,[15,1]))=1
inputData =

       0     0     0     0     0     0     0     1     0     0
       0     0     0     0     0     0     0     0     0     0
       0     0     0     0     0     0     0     0     0     0
       1     0     0     0     0     0     0     0     0     1
       1     0     0     0     0     0     0     1     1     0
       0     0     0     0     0     0     1     1     0     0
       0     0     0     0     0     0     0     0     0     0
       0     1     1     0     0     0     1     0     0     0
       0     0     0     0     0     0     0     0     0     0
       1     0     0     1     0     0     0     0     0     0

% this is what you are looking for

result=blockproc(inputData,[3,3],@(block) any(block.data(:)~=0))

result =

       0     0     1     0
       1     0     1     1
       1     0     1     0
       1     1     0     0

% and if you want both inputData and result matrix be the same size do this:

result=blockproc(inputData,[3,3],@(block) any(block.data(:)~=0)*ones(3,3))

result =

       0     0     0     0     0     0     1     1     1     0     0     0
       0     0     0     0     0     0     1     1     1     0     0     0
       0     0     0     0     0     0     1     1     1     0     0     0
       1     1     1     0     0     0     1     1     1     1     1     1
       1     1     1     0     0     0     1     1     1     1     1     1
       1     1     1     0     0     0     1     1     1     1     1     1
       1     1     1     0     0     0     1     1     1     0     0     0
       1     1     1     0     0     0     1     1     1     0     0     0
       1     1     1     0     0     0     1     1     1     0     0     0
       1     1     1     1     1     1     0     0     0     0     0     0
       1     1     1     1     1     1     0     0     0     0     0     0
       1     1     1     1     1     1     0     0     0     0     0     0

[jack nn]

dear Mohammad Abouali ,I really appreciate you for your help.

[Mohammad Abouali]

you are welcome

Answer 2

[Roger Stafford]

   m = M(a:a+2,b:b+2);  % This is your "block"
   t = +any(m(:)~=0);  % This is the returned value