8.7. Conclusion
In this chapter, we presented an overview on the theory, techniques, and applications of content-based image retrieval. We took patterns of use and computation as the pivotal building blocks of our survey.
From a scientific perspective, the following trends can be distinguished. First, large-scale image databases are being created. Obviously, large-scale data sets provide different image mining problems than do small, narrow-domain data sets. Second, research is directed toward the integration of different information modalities such as text, pictorial, and motion. Third, relevance feedback was and still is an important issue. Finally, invariance is necessary to get to general-purpose image retrieval.
From a societal/commercial ...
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