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Digital image metadata plays a crucial role in managing digital image repositories. It lets us catalog and maintain large image collections as well as search for and find relevant information. Moreover, describing a digital image with defined metadata schemes lets multiple systems with different platforms and interfaces access and process image metadata. Metadata's wide use in commercial, academic, and educational domains as well as on the Web has propelled the development of new standards for digital image data schemes. The Japan Electronics and Information Technology Industries Association has proposed the Exchangeable Image File Format (EXIF) as a standard for storing administrative metadata in digital image files during acquisition. The International Press Telecommunications Council (IPTC) has developed a standard for storing descriptive metadata information within digital images. These metadata schemas, as well as other emerging standards, provide a standard format for creating, processing, and exchanging digital image metadata and enable image management, analysis, indexing, and search applications.