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.

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

[Star Strider]

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

[Walter Roberson]

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

Answer 1

[Image Analyst]

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