Reading in images in a folder withouth knowing the exact names

Question

I have a folder full of images. I want to use them to compute the optical flow with OpenCV. What is a good cross-platform way to read in all the images without having to know the exact file names?

I could rename the images to 1.png, 2.png, and so on, if that helps.

@user1095108: Looks good, but I'd prefer a way without more external libraries. — gartenriese, Jun 27 '14 at 08:13
Look at: http://stackoverflow.com/questions/612097/how-can-i-get-a-list-of-files-in-a-directory-using-c-or-c — PiotrNycz, Jun 27 '14 at 08:14
cross platform today means using external libraries. boost.filesystem v3 should be part of the standard soon, so you'd be on the safe side by using it today — Dmitry Ledentsov, Jun 27 '14 at 08:23

score 1 · Accepted Answer · answered Jun 27 '14 at 08:25

1

there's a hidden gem in core/utility.hpp:

void glob(String pattern, std::vector<String>& result, bool recursive = false);

(takes a dir or similar, returns a vector of filenames)

answered Jun 27 '14 at 08:25

berak

39,159
9
91
89

That's part of OpenCV, right? That would be awesome! – gartenriese Jun 27 '14 at 08:29
3

Where is that core/utility.hpp? STL? Boost? Linux? Windows? – nwp Jun 27 '14 at 08:30
yes, opencv (sorry, question lost the opencv tag while writing this) – berak Jun 27 '14 at 08:31
1

Note: only in OpenCV >= 2.4.9 – Яois Jun 27 '14 at 09:03

Reading in images in a folder withouth knowing the exact names

1 Answers1