How to put name of images files on workspace ?

i have this code to store the number of white pixels that multiple images have. i store it in count variable and it worked but i also want it to also put the file name of images on workspace instead of only showing the data of number of white pixels in variable count so i could see which number of white pixels each image have.

folder_nrml = ('/Users/*/Documents/MATLAB/regionbased_seg/cv/NORMAL');

file_nrml = dir(fullfile(folder_nrml, '*jpg'));

jumlah_file_nrml = numel(file_nrml);

training_data_nrml = zeros(jumlah_file_nrml);

count = [];

for k = 1:jumlah_file_nrml

I = imread(fullfile(folder_nrml, file_nrml(k).name));

BW1 = edge(I, 'canny');

%%imshow(BW1);

[m,n]= size(BW1);

%%count = [];

calc = 0;

for i = 1 : m

for j = 1 : n

if BW1(i,j) == 1

calc = calc+1;

%%else

end

end

end

count = [count;calc];

imwrite(BW1,sprintf('/Users/*/Documents/MATLAB/regionbased_seg/final/NORMAL/MASK_0%d.jpg',k));

end

here is how the data store on count variable :

[MarKf]

Is this is an extension to the question you just asked? Or was my answer not what you were asking?

This is anyway another basic matlab operations question, so do take some time to look at the resources, I assure you it'd save time, and I do mean yours.

The name you want to add next to the numbers is a string, so you'd need a different kind of variable than double (just numbers). You could make a cell ( cell_count(k,:) = {file_nrml(k).name, calc}; no need to preallocate) or a table or fprintf what you need

[fayza nayla]

thank you for your answer Marco Fusca, iam just started to learn matlab a week ago so basic operations is already hard enough for me but thank you so much for both of your answers

Answer 1

[cr]

Initialise

count = {};

instead of count = [];

then replace the count update before imwrite() as

count(end+1,:) = {file_nrml(k).name,calc};

[fayza nayla]

thank you

Answer 2

[Mathieu NOE]

hello

I have not the Image Processing Tbx , so I cannot fully use your code , but I believe my suggestions should work

first suggestion, no need for the two inner for loops to find the number of white pixel

this can be done in one line without any for loop

the second suggestio is to store the filename and the count result in a cell array so you have both infos

folder_nrml = ('/Users/*/Documents/MATLAB/regionbased_seg/cv/NORMAL');
file_nrml = dir(fullfile(folder_nrml, '*jpg'));
jumlah_file_nrml = numel(file_nrml);
training_data_nrml = zeros(jumlah_file_nrml);
count = [];
for k = 1:jumlah_file_nrml
    filename = file_nrml(k).name;
    I = imread(fullfile(folder_nrml, file_nrml(k).name));
    BW1 = edge(I, 'canny');
%     %%imshow(BW1);
%     [m,n]= size(BW1);
    
    %%count = [];
%     calc = 0;
%     for i = 1 : m
%         for j = 1 : n
%             if BW1(i,j) == 1
%                 calc = calc+1;
%             %%else
%             end
%         end

    calc = numel(find(BW1>0)); % or == 1 ?
    out{k,1} = filename;
    out{k,2} = calc;
    imwrite(BW1,sprintf('/Users/*/Documents/MATLAB/regionbased_seg/final/NORMAL/MASK_0%d.jpg',k));
end

[fayza nayla]

thank you