Editing Content-based image retrieval (section)

==Comparison with metadata searching==
An [[image meta search]] requires humans to have manually annotated images by entering keywords or metadata in a large database, which can be time-consuming and may not capture the keywords desired to describe the image.  The evaluation of the effectiveness of keyword image search is subjective and has not been well-defined.  In the same regard, CBIR systems have similar challenges in defining success.<ref name="Eakins">{{cite web |url=http://www.jisc.ac.uk/uploaded_documents/jtap-039.doc |title=Content-based Image Retrieval |author=Eakins, John |author2=Graham, Margaret |publisher=University of Northumbria at Newcastle |access-date=2014-03-10 |url-status=dead |archive-url=https://web.archive.org/web/20120205153636/http://www.jisc.ac.uk/uploaded_documents/jtap-039.doc |archive-date=2012-02-05 }}</ref> "Keywords also limit the scope of queries to the set of predetermined criteria." and, "having been set up" are less reliable than using the content itself.<ref name=IW.1996/>