Reverse image search

Reverse image search is a (CBIR) query technique that involves providing the CBIR system with a sample image that it will then base its search upon; in terms of information retrieval, the sample image is very useful. In particular, reverse image search is characterized by a lack of search terms. This effectively removes the need for a user to guess at keywords or terms that may or may not return a correct result. Reverse image search also allows users to discover content that is related to a specific sample image or the popularity of an image, and to discover manipulated versions and derivative works. A visual search engine is a search engine designed to search for information on the World Wide Web through a reverse image search. Information may consist of web pages, locations, other images and other types of documents. This type of search engines is mostly used to search on the mobile Internet through an image of an unknown object (unknown search query). Examples are buildings in a foreign city. These search engines often use techniques for Content Based Image Retrieval. A visual search engine searches images, patterns based on an algorithm which it could and gives relative information based on the selective or apply pattern match technique. Reverse image search may be used to: Locate the source of an image. Find higher resolution versions. Discover webpages where the image appears. Find the content creator. Get information about an image. Commonly used reverse image search algorithms include: Scale-invariant feature transform - to extract local features of an image Maximally stable extremal regions Vocabulary tree An is a search engine that is designed to find an image. The search can be based on keywords, a picture, or a web link to a picture. The results depend on the search criterion, such as metadata, distribution of color, shape, etc., and the search technique which the browser uses. Two techniques currently used in image search: Search by metadata: Image search is based on comparison of metadata associated with the image as keywords, text, etc.