Indexing pictorial documents by their content: a survey of current techniques

摘要

To efficiently solve the image retrieval problem in an image database, many techniques have been devised addressing the require- ments of different applications. Present information management system exploit these techniques to allow querying of pictorial documents archives. To do this, the first step is to extract relevant keys from the image content itself, so that images are not treated as illustrative appendices of textual documents. Even more important, the search process is mot restricted to external attributes such as the storing date or the archive number.