Here you can add image information (author, data, time, comments, image type, subject view) and keep track of the image source as every image is assigned unique id number.
All objects linked to a selected image can also be checked from image library.
You can also use image library to preload all the images you intend to use and when assigning the to the item just select 'Load from library'.
To load large amount of images from selected directory and export large amount of images from image library use Import/export