Preprocessing cropping script throws error?

[AjayTalati]

Hello, I'm getting a tedious error running the cropping script for preprocessing the Celeb-A dataset,

ajay@ajay-h8-1170uk:~/TorchProjects/dcgan$ DATA_ROOT=celebA th data/crop_celebA.lua
/usr/local/bin/luajit: /usr/local/share/lua/5.1/image/init.lua:339: attempt to concatenate local 'ext' (a nil value)
stack traceback:
    /usr/local/share/lua/5.1/image/init.lua:339: in function 'load'
    data/crop_celebA.lua:7: in main chunk

I tried to run the script line by line from TREPL using,

data = '/home/ajay/TorchProjects/dcgan/celebA/img_align_celeba'
for f in paths.files(data, function(nm) return nm:find('.jpg') end) do
    f2 = paths.concat(data, f)
    print(f2)
    im = image.load(f2)
end

and got a similar error,

/home/ajay/TorchProjects/dcgan/celebA/img_align_celeba  
/usr/local/share/lua/5.1/image/init.lua:339: attempt to concatenate local 'ext' (a nil value)
stack traceback:
    /usr/local/share/lua/5.1/image/init.lua:339: in function 'load'
    [string "for f in paths.files(data, function(nm) retur..."]:4: in main chunk

Sorry about this I've been away from coding for a while?

[soumith]

@AjayTalati could you try reinstalling image? ( luarocks install image )

[AjayTalati]

@soumith Great, that did it! Just needed to clean and reinstall Torch, it's training nicely now.

Thanks a lot mate 👍