save the output figure as binary image

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i am plotting rectangle like in the code bellow,
rectangle('Position',[96 539-450 214 161], 'FaceColor',[0 .5 .5])
axis([0 559 0 539])
i want to save the output figure as binary image "in workspace" without border and exact area.
as a result the binary image must be like 559x539
any help?
  2 Comments
Subhadeep Koley
Subhadeep Koley on 16 Feb 2020
Use this
[rows, cols, channels] = size(img)

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Accepted Answer

Subhadeep Koley
Subhadeep Koley on 16 Feb 2020
Edited: Subhadeep Koley on 16 Feb 2020
The below code will save the figure as an image in the worksapce.
clc; close all;
rectangle('Position',[0 0 539 539], 'FaceColor',[0 .5 .5],...
'LineStyle', 'none');
axis tight; axis off;
frm = getframe(gcf);
img = frame2im(frm);
img = imresize(img, [539, 539], 'bicubic');
figure; imshow(img);
But, if you convert the image to binary (as you stated in your question) then all the color information (which you added using FaceColor) will be lost. And the image will become a black blob.
  8 Comments
mohammed alany
mohammed alany on 17 Feb 2020
@image analyst @subhadeep koley Thanks for your reply, but can you please write me the exact code? What you mean by burn

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