Problem with imwrite

Dear Sir,

i am trying to use imwrite to save some images i selected from my database to put them in a new folder

i used this : image2= imread(['C:\Database\',num2str(x(i)),'.jpg']);

imwrite(image2,fullfile(cd, strcat('C:\Results\',image2,'.jpg')));

would you guide me to solve this?

Thank you

[Jan]

You forgot to explain the problem.

Answer 1

[Andrei Bobrov]

try

fullfile(cd, strcat('Results\',num2str(x(i)),'.jpg'))

[Jessica]

yes i just tried it and gave me so:

Can't open file

"C:\Results\104\.jpg"

for writing.

You may not have write permission.

Error in ==> Retrieval3 at 135

imwrite(image2,fullfile(cd,

'C:\Results\',

num2str(x(i)),'.jpg'));

[Jan]

Does "You may not have write permissions" reveal the source of the problem already?!

[Jessica]

yes what andrei told me to do worked but now i have the error above

[Walter Roberson]

You missed the strcat() step, Jessica.

Answer 2

[Jan]

This is not valid:

fullfile(cd, strcat('C:\Results\',image2,'.jpg'))

While cd is the current directory, you cannot append the path 'C:\...'. Most likely you want:

fullfile('C:', 'Results', [image2, '.jpg'])

or directly:

['C:\Results\', image2, '.jpg']

to construct the file name.

[Image Analyst]

Or (my favorite) use sprintf() to construct your base filename:

baseFileName = sprintf('Results %d.PNG', imageNumber);

fullFileName = fullfile(folder, baseFileName);

Note that I use PNG for lossless compression and better saved image quality, rather than JPG.