How to superimpose an matrix image into the center of a zero matrix (MATLAB CODE)?

The given image is 211 x 350 and there is a zeros matrix of size 512 x 512. The goal is to superimpose the image in the middle of the zero matrix. Then plot the squared image.

I don't know how to do this part, looking for some help.

Thank you.

Answer 1

[Andrei Bobrov]

z = zeros(14);
b = randi(100,5,8);

sz = size(z);
sb = size(b);

bb = floor((sz - sb)/2)+1;
z(bb(1)+(0:sb(1)-1),bb(2)+(0:sb(2)-1)) = b;

Answer 2

[Image Analyst]

Just figure out the starting and ending rows and columns through simple algebra, and do

z(row1:row2, col1:col2) = givenMatrix;

For a start,

row1 = round(256 - 211/2)

I imagine you can figure out the rest, i.e. row2=row1+211-1, etc.

[Juan Rodriguez]

Hi, I'm having a similar issue, however, I don't follow what you're saying exactly. Can you provide more code and reasoning rather than "etc."?

[Image Analyst]

If Andrei's code is too cryptic for you to follow, then let me know. Otherwise it's basically the same thing I said.