save image in a folder with original name

i use to resize the image and then save it back into with the original name. for example the first image name is signature3, then after resize the image i want to save it into the bmp image with the name signature3. i am going to process many image with different name..

J=imread('Signature3.jpg');

I=im2double(J);

figure(1),imshow(I);

title('original')

I2=imresize(I,[128 ,128]);

figure(2),imshow(I2);

data=I2;

pathname = 'D:\matlab\trying\data\';

imwrite(data,[pathname,('J'),'.bmp']);

the result of this code just name the file with j. can anyone help me. i am new in matlab.

Answer 1

[Image Analyst]

Please refer to the FAQ for some code examples: http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F

I prefer to use sprintf() to build the base filename, and then use fullfile() to construct the full file name from the folder and base file name. You're putting your images in the current folder, same as your m-file scripts. The current folder is pwd.

Also, please use better variable names than I (which looks a lot like 1 and l) and J. Use longer, more descriptive names that will help explain what you are trying to do. Also make sure you put comments into your code.

Answer 2

[Salma Hassan]

https://stackoverflow.com/questions/32430643/saving-with-original-names-in-matlab

[Stephen23]

Note that using fullfile is preferred over string concatenation.