how to enter mask

2 views (last 30 days)
vetri veeran
vetri veeran on 24 Oct 2014
Commented: Image Analyst on 24 Oct 2014
Hi sir,
I want to enter this mask given below to 288*543.
288*543 contains initially 1000 as non object and 0 as object.
To that I have to enter this mask,
mask=[1.414,1,1.414; 1,1,1000; 1000,1000,1000];
and I need to apply this algorithm,
d_new(i,j)=min([d_new(i,j);1+d_new(i+1,j); 1.41+d_new(i+1,j+1);1+d_new(i,j+1);1.41+d_new(i-1,j+1)]);
and i need to update the values by d_new(i,j)
How can I achieve this in for loop.
Thanks in advance.

Accepted Answer

Image Analyst
Image Analyst on 24 Oct 2014
Do you mean to replicate the mask out to a size of 288-by-543? Like this:
workspace;
% Initial 3-by-3 mask.
mask=[1.414,1,1.414; 1,1,1000; 1000,1000,1000]
% Make copies out to a size of 288-by-543
mask2 = repmat(mask, [96, 181]);
  1 Comment
Image Analyst
Image Analyst on 24 Oct 2014
Regarding your edited question and new "Answer" (which is the same as your question now, and I'll probably delete)...your mask is 3-by-3 (9 elements) whereas your "algorithm" only has 5 elements. How do you reconcile that?

Sign in to comment.

More Answers (1)

vetri veeran
vetri veeran on 24 Oct 2014
Hi sir,
I want to enter this mask given below to 288*543.
288*543 contains initially 1000 as non object and 0 as object.
To that I have to enter this mask,
mask=[1.414,1,1.414; 1,1,1000; 1000,1000,1000];
and I need to apply this algorithm,
d_new(i,j)=min([d_new(i,j);1+d_new(i+1,j); 1.41+d_new(i+1,j+1);1+d_new(i,j+1);1.41+d_new(i-1,j+1)]);
and i need to update the values by d_new(i,j)
How can I achieve this in for loop.
Thanks in advance.

Categories

Find more on Author Block Masks in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!