how to access images from sub folders?
7 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
sidra Rafique
am 14 Sep. 2018
Bearbeitet: Stephen23
am 1 Okt. 2018
hi. i have a folder F1 and then in this folder i have S1 and S2 afterwards in each S1 and S2 i have E1 and E2 finally in these folders i have images named as frame_0000.jpeg till frame_2000.jpeg. for better understanding i am attaching a pic of my hierarchy.
after accessing each image i have to convert them from rgb2gray, apply my required preprocessing and then make excel file of each images in 'E' folders. Please help me accessing these images. waiting for your kind response.
0 Kommentare
Akzeptierte Antwort
Stephen23
am 29 Sep. 2018
Bearbeitet: Stephen23
am 29 Sep. 2018
Using dir:
D = 'path to directory F1';
S = dir(fullfile(D,'S*'));
for ii = 1:numel(S)
E = dir(fullfile(D,S(ii).name,'E*'));
for jj = 1:numel(E)
F = dir(fullfile(D,S(ii).name,E(jj).name,'frame*.jpg'));
for kk = 1:numel(F)
N = fullfile(D,S(ii).name,E(jj).name,F(kk).name);
im = imread(N);
end
end
end
Using cell arrays and sprintf:
F = 'path to directory F1';
S = {'S1','S2'};
E = {'E1','E2'};
V = 0:2000;
for ii = 1:numel(S)
for jj = 1:numel(E)
for kk = 1:numel(F)
N = fullfile(D,S{ii},E{jj},sprintf('frame_%04d.jpg',V(kk)));
im = imread(N);
end
end
end
See also:
10 Kommentare
Stephen23
am 1 Okt. 2018
Bearbeitet: Stephen23
am 1 Okt. 2018
@sidra Rafique: it seems that you want to use the S loop to define the filename, and the E loop to define the sheet name, something like this:
D = 'path to directory F1'; S = dir(fullfile(D,'S*')); for ii = 1:numel(S) fnm = sprintf('%s.xlsx',matrix,S(ii).name); E = dir(fullfile(D,S(ii).name,'E*')); for jj = 1:numel(E) sht = E(jj).name; F = dir(fullfile(D,S(ii).name,E(jj).name,'frame*.jpg')); out = cell(1,numel(F)) for kk = 1:numel(F) N = fullfile(D,S{ii},E{jj},sprintf('frame_%04d.jpg',V(kk))); im = imread(N); out{kk} = ... whatever data you want to save end mat = vertcat(out{:}); xlswrite(fnm,mat,sht,...) end end
Weitere Antworten (1)
KSSV
am 14 Sep. 2018
A simple google will give you lot of links to this question. This question is discussed and asked lot many times.
4 Kommentare
Image Analyst
am 30 Sep. 2018
Looks like this doesn't apply anymore since you accepted the other answer.
Siehe auch
Kategorien
Mehr zu File Operations finden Sie in Help Center und File Exchange
Produkte
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!