An admittedly brute force approach, but Matlab doesn't have a built in method for finding patterns in an array/matrix (at least it didn't back in 2017).
[blm_rows, blm_cols] = size(binarylogicalmatrix);
pat = [0 0 1; 0 1 0; 0 0 0];
[pat_rows, pat_cols] = size(pat);
for i = 1:blm_rows-pat_rows+1
for j = 1:blm_cols-pat_cols+1
subblm = binarylogicalmatrix(i:i+pat_rows-1,j:j+pat_cols-1)
if subblm == pat
disp('Pattern Found!')
found_row = i;
found_col = j;
break
end
end
end
