How to read CT sequence images and process them

Question

XF 2019-4-14

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https://ww2.mathworks.cn/matlabcentral/answers/456294-how-to-read-ct-sequence-images-and-process-them

回答： Stan Hopkins 2020-1-23

Hi, I am new in matlab, and I have about 200 CT slices ,name as 1.tif,2.tif...600.tif in a folder (C:\Users\Documents\matlab\CT images). I want to imread them and process them by for loop,for example binarize and segment them, what I should do? Could you please give me a code for reference, thank you very much!

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XF 2019-4-14

@Image Analyst Hi, thank you much for your explanation! You mean I just imread and binarize the particular slice? Actually, I have 200 images in the same folder, name as 1.tif, 2.tif, 3.tif...200.tif, and they are all grayImage already. I want to imbinarize all of them, could you please tell what should I do ? This the code I use:

myFolder = 'C:\Users\XF\Documents\CT images';

filePattern = fullfile(myFolder, '*.tif);

theFiles = dir(filePattern);

for k = 1 :200

baseFileName = theFiles(k).name;

fullFileName = fullfile(myFolder, baseFileName);

fprintf(1, 'Now reading %s\n', fullFileName);

image = imread(fullFileName);

imageBw=imbinarize(image)

end

Image Analyst 2019-4-14

在 MATLAB Online 中打开

That looks about right, but don't use image as the name of your variable since that's already the name of a built-in function. Call it thisImage or something.

You may also want to do

for k = 1 : length(theFiles)

if you want to process every file in the list. Right now you process 200 so if the number is less, you'll get an error and if the number is more than 200, you'll only process the first 200.

Also isn't there anything you want to do with the binary image? Right now you just create it and then ignore it.

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