courbe de progression du pixel

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Amal Felhi 2021-4-7

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/795602-courbe-de-progression-du-pixel

评论： Rik 2021-4-10

采纳的回答： Rik

Bonjour à tous j'ai en entrée 25 images IRM(dicom).

je metsen un point fixe (x,y) et je garde l'emplacement de ce pixel pour les autres images.

je veux tracer la courbe de progression de ce pixel. comment programmer ça?

Hello everyone, I have 25 MRI images (dicom) as input. I put a fixed point (x, y) and I keep the location of this pixel for the other images. I want to plot the progression curve of this pixel. how to program that?

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Amal Felhi 2021-4-8

在 MATLAB Online 中打开

i load the 25 images with this codes:

rep = uigetdir;
Imgs = dir(rep);
thisname = Imgs(3).name;
[path,name,ext]=fileparts(thisname);
ext=strcat('*',ext);
chemin = fullfile(rep,ext);
list = dir(chemin);
nbr_images= numel(list);
for n=1:numel(list) 
k=dicomread(fullfile(rep, list(n).name));
end;
IM=double(img);
figure(1),subplot(5,5,1),imshow(IM,[]);
figure(1),subplot(5,5,2),imshow(IM,[]);
figure(1),subplot(5,5,3),imshow(IM,[]);
figure(1),subplot(5,5,4),imshow(IM,[]);
figure(1),subplot(5,5,5),imshow(IM,[]);
figure(1),subplot(5,5,6),imshow(IM,[]);
figure(1),subplot(5,5,7),imshow(IM,[]);
figure(1),subplot(5,5,8),imshow(IM,[]);
figure(1),subplot(5,5,9),imshow(IM,[]);
figure(1),subplot(5,5,10),imshow(IM,[]);
figure(1),subplot(5,5,11),imshow(IM,[]);
figure(1),subplot(5,5,12),imshow(IM,[]);
figure(1),subplot(5,5,13),imshow(IM,[]);
figure(1),subplot(5,5,14),imshow(IM,[]);
figure(1),subplot(5,5,15),imshow(IM,[]);
figure(1),subplot(5,5,16),imshow(IM,[]);
figure(1),subplot(5,5,17),imshow(IM,[]);
figure(1),subplot(5,5,18),imshow(IM,[]);
figure(1),subplot(5,5,19),imshow(IM,[]);
figure(1),subplot(5,5,20),imshow(IM,[]);
figure(1),subplot(5,5,21),imshow(IM,[]);
figure(1),subplot(5,5,22),imshow(IM,[]);
figure(1),subplot(5,5,23),imshow(IM,[]);
figure(1),subplot(5,5,24),imshow(IM,[]);
figure(1),subplot(5,5,25),imshow(IM,[]);

on this zip files you will find the 25 images

Amal Felhi 2021-4-9

my problem the update of the 25 images on the popmenu.

can you send to me the code of the update?

Rik 2021-4-10

You can either use imshow (use the axes object handle), or you can set the CData property of an image object (which is the output of the imshow function).

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采纳的回答

Rik 2021-4-7

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/795602-courbe-de-progression-du-pixel#answer_669712

在 MATLAB Online 中打开

%load an example image

S=load('mri');

I=squeeze(S.D);

x=randi(size(I,1));y=randi(size(I,2));

intensity=squeeze(I(x,y,:));

plot(intensity)

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Amal Felhi 2021-4-7

votre code me donne ce resultat:

Rik 2021-4-7

You should put in your own image and coordinates. It can happen that an x-y-combination is 0 for all z values. This will happen around the edge. Unfortunately, this example image is about half edge, so if you want to use random coordinates, you will get this line about half the time.

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