i want to read a folder of images and do my code on the images then obtain some features from every image and save them in a vector. how can i do that? i wrote this code but it has an error to read the folder.

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ramin asadi 2015-12-11

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/259936-i-want-to-read-a-folder-of-images-and-do-my-code-on-the-images-then-obtain-some-features-from-every

回答： Image Analyst 2015-12-12

I1=rgb2gray(I);
>BW=edge(I1,'sobel');
>D=bwdist(BW);
>u=D(480,:);
>Z=sum(u)/720;

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Star Strider 2015-12-11

See also: how can I save the results of every run in a vector?

Walter Roberson 2015-12-11

That code has nothing in it that would read an image?

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Answer 1

Image Analyst 2015-12-12

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/259936-i-want-to-read-a-folder-of-images-and-do-my-code-on-the-images-then-obtain-some-features-from-every#answer_203016

在 MATLAB Online 中打开

See the FAQ for code to process a bunch of files: http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F

In the middle of the loop, just save your result:

for k = 1 : numberOfImages
    % code to read in imageArray......
    % Now analyze it.
    result(k) = AnalyzeSingleImage(imageArray);
end

where AnalyzeSingleImage is the function that you write to make your measurement and returns a single number.

If it returns an array of numbers, like a feature vector, then use a 2D array to store the results:

allResults = zeros(numberOfImages, 10); 
for k = 1 : numberOfImages
    % Get results, an array of 10 measurements we've made.
    results = AnalyzeSingleImage(imageArray);
    allResults(k,:) = results;
end

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i want to read a folder of images and do my code on the images then obtain some features from every image and save them in a vector. how can i do that? i wrote this code but it has an error to read the folder.

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i want to read a folder of images and do my code on the images then obtain some features from every image and save them in a vector. how can i do that? i wrote this code but it has an error to read the folder.

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