BUAA AUDR at ImageCLEF 2012 photo annotation task

This paper presents the participation of the BUAA AUDR group at ImageCLEF 2012 in the Photo Annotation and Retrieval task. We selected Flickr photos as data set to perform visual concept detection, annotation and retrieval. In this task, we had proposed multi-modal approaches that considered visual information and Flickr user tag information. We presented our visual-based and tag-based photo annotation methods, and also proposed Annotation Refining Algorithm (ARA), which attempted to make use of the relation between concepts to improve the annotation result. It was our first time to participate the Photo Annotation and Retrieval task. We submitted 3 runs totally and the purely visual submission using the global visual features and BoW features get better performance.