how to change the background in imshow from black to white

get(0,'Factory');
set(0,'defaultfigurecolor',[1 1 1]);
whitebg(figure);
set(gcf,'color','white');
set(gca,'color','none');
figure; clf;
imshow(pairOfImages);

The result is this

I want a result that shows the pyramid with a white background.

Thanks

[Morteza]

in fact by counting the number of repeated item you can consider what color is dominated by background color and set the new color as user specify it like input and then set new background color. write GUI to analyze it and do the rest...

Answer 1

[Morteza]

try this save your picture like Untitled.png on your desktop and then call it from MATLAB like below:

clc,clear all
A = imread('C:\Users\MORTEZA\Desktop\Untitled0.png');
figure(1)
image(A)
[L,W,D] = size(A);
for i = 1:L
  for j = 1:W
      for k = 1:D
          if A(i,j,k) == 0
              A(i,j,k) = 255;
          end
      end
  end
end
figure(2)
image(A)

[Houghton]

Thanks. Now it works for this image. I will try more for other images in different conditions.

[Keerthi D]

Sir I tried your code above, but I didn't get.

A=imread('C:\Users\Keerthi Dev\Desktop\matlabwork\seg1.png');
figure(1)
image(A)
[L,W,D] = size(A);
for i = 1:L
   for j = 1:W
       for k = 1:D
           if A(i,j,k) == 0
               A(i,j,k) = 255;
           end
       end
   end
end
figure(2)
image(A)

result is:

Sir, please help me to solve my problem

[Image Analyst]

Sure, but please post it in a new post, not tacked onto a 5 years old post from someone else.

Answer 2

[hf fh]

I have a grayscale image, Please help me I have a picture and I want to make the background color white I used the previous method but did not good out with me

[sach]

hey dude, i did. it came out just fine