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

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?

Answer 1

[Sreeram Mohan]

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

[Deepa Nair]

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]

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\';

Answer 2

[Michael Haderlein]

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.

[Deepa Nair]

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

Answer 3

[Sreeram Mohan]

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

[Deepa Nair]

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

Answer 4

[sruthi N]

In image processing i have real time image. but its read only the specific software like that Radiant Dicom viewer, so how will i read the image from this software in m.file