As you are aware, when you create your post with images and publish them on your website, sooner or later they will appear on Google.
Your article will land in Search Results and images will be shown in Google Images.
Sometimes you are taking a lot of effort into your images and restricting their use by providing specific disclaimers or copyright information on your website.
The problem is that Google does not always know that and when you search for an image, that is sourced from your website, the image may be copyright restricted.
The user, who is searching through, will not know that as well and he may come into trouble. This may result in a fine that may need to be paid to the rightful owner.