How can I restrict access/view images of other user uploaded using CK Editor

I am using CK Editor, in my application every user have his separate email templates. I want to store images to user specific and user should not view othe开发者_JAVA百科r user uploaded images when browse to Server to upload images

Thanks

One way of doing it is point different user to to different image folder

for example: root/<%=UserId%>/Image