Addition of more than one image is no not possible in for loop?

Question

Jhilam Mukherjee 2014-10-12

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/158325-addition-of-more-than-one-image-is-no-not-possible-in-for-loop

评论： Jhilam Mukherjee 2014-10-13

I want to segment an image region grow algorithm. I have taken seed points using getpts. My code is executed. I have obtained individual images in each iteration. But I want all segmented region in one image at last iteration. But I cannot get that. Please help me to overcome this problem.

close all;
I=imread('CT6.jpg');
I=im2double(I);
I=rgb2gray(I);
figure,imshow(I);
hold on;
[y x]=getpts;
n=length(x);
hold off;
J=zeros(10,10);
for i=1:n-1 
    x(i)=round(x(i));
    y(i)=round(y(i));
    J = regiongrowing(I,x(i),y(i),0.1); 
    %J=(J,J);
    K=imadd(J,J)
    figure,imshow(J);
end
figure,imshow(J);

5 个评论
显示 3更早的评论隐藏 3更早的评论

Geoff Hayes 2014-10-13

@Image Analyst - I think that Jhilam means to add/layer all images on top of one another using imadd.

Image Analyst 2014-10-13

I added another answer after you pointed that out. See below.

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Image Analyst 2014-10-13

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/158325-addition-of-more-than-one-image-is-no-not-possible-in-for-loop#answer_155007

编辑：Image Analyst 2014-10-13

在 MATLAB Online 中打开

Try adding J to the prior K rather than to J (itself).

if i == 1
  K = double(J);
else
  K = K + J;
end
imshow(K, []);
drawnow;

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Jhilam Mukherjee 2014-10-13

Yes, My problem is solved. I get my desire output.

请先登录，再进行评论。

Answer 2

Image Analyst 2014-10-12

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/158325-addition-of-more-than-one-image-is-no-not-possible-in-for-loop#answer_154870

在 MATLAB Online 中打开

Try using subplot() instead of using figure:

close all;
I=imread('CT6.jpg');
I=im2double(I);
I=rgb2gray(I);
figure,imshow(I);
hold on;
[y x]=getpts;
n=length(x);
hold off;
subPlotRows = ceil(sqrt(n));
J=zeros(10,10);
for i=1:n-1 
    x(i)=round(x(i));
    y(i)=round(y(i));
    J = regiongrowing(I,x(i),y(i),0.1); 
    %J=(J,J);
    K=imadd(J,J)
    subplot(subPlotRows, subPlotRows, i)
    imshow(J);
end