How do I read an image from a different folder into my .m file using Matlab in Ubuntu?

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Deepa Nair 2015-4-24

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回答： sruthi N 2017-12-13

I am able to access images from a folder using Matlab in Windows. I use Matlab 2010a with Ubuntu 14.04. How do I read an image from a folder which is outside the current folder into my .m file?

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Answer 1

Sreeram Mohan 2015-4-24

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Hi Deepa,

Did you try adding the folder that your image exists into path and try out ?

You could programatically add the folder to the MATLAB path as well using

>> addpath(folderName);

hope this helps !!

Thanks,

Sreeram Mohan

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Deepa Nair 2015-4-24

在 MATLAB Online 中打开

Thank you Sreeram. I tried with addpath also. This is the code I tried..

InputImg= dir(fullfile('home\Deepa\Documents\reading_DB\images\*.jpg')); InputDir ='home\nit\Documents\After_compre\reading_DB\images\';

InputN = {InputImg.name};

for Imagenum = 1:length(InputImg) filename = InputImg(Imagenum); name = strcat(InputDir,filename);

    In_img = imread(filename);
    figure()
    imshow(In_img,[]);
    title('Input Image');

end

In the work space, it still shows inputN as a 0x0 cell.

Deepa Nair 2015-4-24

A correction: both path in the program are the same InputImg= dir(fullfile('home\Deepa\Documents\reading_DB\images\*.jpg')); InputDir ='home\Deepa\Document\reading_DB\images\';

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Answer 2

Michael Haderlein 2015-4-24

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Possibly the file separator you use is wrong? In Unix systems you use "/" while in Windows you use "\". However, you write "dir(fullfile('home\Deepa\Documents\reading_DB\images\*.jpg'))", so I guess you have chosen the wrong one. You can use filesep to get the correct separator.

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Deepa Nair 2015-4-27

Thank you for the tip, Michael. I tried /, it didnt work.

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Answer 3

Sreeram Mohan 2015-4-28

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Hi Deepa,

First off could you please first reduce the problem to a simple one so that we can see what is the real issue ?

1) Could you please copy 1 jpg file into the present working directory wherever the script is being run and then verify without path if imread and the imshow work ? 2) Next once that is working could you please try putting the image in a location that is smaller in length and try ? may be less than 64 characters ? If even this work then proceed to 3rd step 3) Try using a longer path name and see if that works !

Hope this will give a better insight into where the issue is popping in from ?

--sreeram

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Deepa Nair 2015-4-29

Thanks a lot for your help, Sreeram. It worked.

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Answer 4

sruthi N 2017-12-13

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