Overview of the ImageCLEF 2012 robot vision task

This article describes the RobotVision@ImageCLEF 2012 challenge, which addresses the problem of multimodal place classification. Participants of the challenge were asked to classify rooms on the basis of image sequences captured by cameras mounted on a mobile robot. The proposals of the participants had to answer the question \where are you?" (I am in the elevator, in the toilet, etc) when presented with a test sequence, acquired within the same building and oor but with different lighting conditions than the training sequence. The 2012 edition of the challenge introduced the use of depth images in addition to visual images. Moreover, several techniques for feature extraction and cue integration were also proposed. As in previous editions, two different tasks were proposed: task 1 and task 2. In task 1 (mandatory) participants were asked to classify the frames separately, while the temporal continuity of the image sequence could only be exploited in task 2 (optional). Eight different groups participated to the 2012 edition of the Robot Vision challenge. The winner in both tasks was the Centro de Investigación en Informatica para la Ingeniería (CIII), from the Universidad Tecnológica Nacional, Argentina (CIII UTN FRC). This participant obtained an overall score of 2071 (84.70% of the maximum score) in task 1 and 3930 (96.35% of the maximum score) in task 2.