matlab gui

i am acquiring live video data from the webcam. i capture the images and want to save those images in some other file. but when i save an image, the previously saved image is being replaced by the newly saved image. whereas i want to save all the images which i capture. my code goes like this:

[filename,pathname]=uiputfile('*.*','Save file as'); if(filename~=0) vidobj1=handles.vidobj; snapshot = getsnapshot(vidobj1); snapshot=imresize(snapshot, [256, 256]); imwrite(snapshot,'.JPG'); end

can anyone tell me what modifications i will have to make to this code such that the images are not overwritten.

Answer 1

[Voss]

You'd have to tell imwrite() to write to the file just selected:

[filename,pathname]=uiputfile('*.*','Save file as');
if(filename~=0)
    vidobj1=handles.vidobj;
    snapshot = getsnapshot(vidobj1);
    snapshot=imresize(snapshot, [256, 256]);
%     imwrite(snapshot,'.JPG');
    imwrite(snapshot,fullfile(pathname,filename),'jpg');
end