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The CLEF 2011 Plant Images Classification Task

. ImageCLEF’ plant identiﬁcation task provides a testbed for the system-oriented evaluation of tree species identiﬁcation based on leaf images. The aim is to investigate image retrieval approaches in the con-text of crowdsourced images of leaves collected in a collaborative manner. This paper presents an overview of the resources and assessments of the plant identiﬁcation task at ImageCLEF 2011, summarizes the retrieval approaches employed by the participating groups, and provides an analysis of the main evaluation results.