The PRA and AmILAB at ImageCLEF 2012 Photo Flickr Annotation Task

PIRAS, LUCA;TRONCI, ROBERTO;Murgia G;GIACINTO, GIORGIO

2012-01-01

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Abstract

This paper presents the first participation of the Pattern Recognition and Application Group (PRA Group), and the Ambient Intelligence Lab (AmILAB) at the ImageCLEF 2012 Photo Flickr Concept Annotation Task. In this task, the teams’ goal is to detect the presence of 94 concepts in the images, and to provide a confidence score related to the confidence of the decision of each concept detector. We faced the challenge by relying on visual information only, combining different image descriptors by means of different score combination techniques. Experimental results show that just combining concept detectors not specifically designed for handling the large variety of concepts does not allow reaching satisfactory results.