Google launched Search by Image last year, and then updated algorithms for it almost every week since, but now the search engine will use its Knowledge Graph to power the popular feature.
Search by Image allows users input an image, and then Google offers images and search results related to that image. Users select an image through the ‘ole drag-and-drop, and then uploading, or even inputting a URL. Meanwhile, the Knowledge Graph is new technology that allows Google to provide search results for concepts linked between words, rather than showing results for just the query term.
Software Engineer Sean O’Malley explained the inclusion on Google’s Inside Search blog today:
With the recent launch of the Knowledge Graph, Google is starting to understand the world the way people do. Instead of treating webpages as strings of letters like “dog” or “kitten,” we can understand the concepts behind these words. Search by Image now uses the Knowledge Graph: if you search with an image that we’re able to recognize, you may see an extra panel of information along with your normal search results so you can learn more. This could be a biography of a famous person, information about a plant or animal, or much more.
Google wants to improve its image search. When a user uploads an image of a specific type of flower, for instance, Google would previously give general flower search results. Now, Google will try to guess the exact type of flower. Google will also show the most recent content in search results, which is helpful for news images.