Researchers launch first iPhone field guide using visual search

Columbia University, the University of Maryland and the Smithsonian Institution have pooled their expertise to create the world's first plant identification mobile app using visual search -- Leafsnap. This electronic field guide allows users to identify tree species simply by taking a photograph of the tree's leaves. In addition to the species name, Leafsnap provides high-resolution photographs and information about the tree's flowers, fruit, seeds and bark—giving the user a comprehensive understanding of the species.

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