Image created but not of supported file type

I am encrypting an image and displaying the encrypted image and also saving it in the default directory with a .jpeg extension. It displays the image fine and even reads the image using imread() but if I try to open the file that got saved I get a message that the format is not supported. Why is this happening?

[Jan]

Please reveal any details: How did you save the file? How do you try to "open" the file?

[fiona rozario]

I am saving the file like this -

if true
encrimage=cat(3,shuffle1red,shuffle1green,shuffle1blue);
figure, imshow(encrimage), title('Encrypted Image');
imwrite(encrimage,'eimage.jpeg','mode','lossless');
end

To open the file outside of Matlab I am double clicking on the file in the Matlab folder where it is saved.

[Jan]

This means, that the default application to display JPEG files on your computer cannot handle Matlab's 'lossless' JPEG format. We do not know which application you have installed, but the solution is to use another one.

Answer 1

[Astarag Chattopadhyay]

Hi,

You can refer to the following link which answers the same query as above:

 https://in.mathworks.com/matlabcentral/answers/99125-why-can-i-not-open-a-jpeg-image-written-using-lossless-compression-outside-of-matlab

[fiona rozario]

Thank you...that worked.