Hi,
Hope this will help you. This is very simple by configuring JCE editor profile.
In JCE profile setting, Editor & Praram/File system,
Set value for "File Directory Path" is "images/$id" with "$id" will be replace by user id.
After click on image icon on tool panel, File Browser of JCE will load exactly user image folder.
This is help my problem is user only see their uploaded image.
BR.