How to get an image into Google's Image Library?

One of the ways to get an image into Google's Image Library is by embedding Meta Tags into the images prior to inserting them on a webpage.

So why is it beneficial for SEO Rankings to have website images included in the Google Image Library? The answer is that since images in the Google Image Library are linked to the website they reside-in, these links can actually help the Rankings.

If images are Meta-Tagged, they will be indexed and shown for searches in the Image Library, which can boost visits to the website, ergo - more traffic and a potential resulting boost in SEO Rankings.

So what are the various parameters associated with website images that are considered by the Google algorithms?

The following image parameters are used by Google to determine what search phrases are relevant for Indexing purposes, namely:

1. Image name
2. Text surrounding the image
3. The "Alt-Tag" of the image
4. The "Meta-Tags" embedded into an image within the "XMP" file, such as:
   1. Image Title
   2. Image Description
   3. Multiple Search Phrases