Partial image matching by measures from connected color regions

Color information is widely used in content-based image indexing and retrieval, but the information is global, which means that it is computed over an entire image. Thus it is not proper to use it in image indexing where local information is needed. As a method of providing local information, we introduce measures computed from connected color regions. In a connected color region, the color density and maximum co-occurrence color probability are calculated. The measures are used in retrieving an image that contains a partial image which is given as a query.

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