Design of experiments for performance evaluation and parameter tuning of a road image processing chain

  • Authors:
  • Yves Lucas;Antonio Domingues;Driss Driouchi;Sylvie Treuillet

  • Affiliations:
  • Laboratoire Vision et Robotique, IUT Mesures Physiques, Université d'Orléans, Bourges cedex, France;Laboratoire Vision et Robotique, ENSIB, Lahitolle, Bourges, France;Laboratoire de Statistiques Théoriques et Appliquées, Université Pierre & Marie Curie, rue du Chevaleret, Paris, France;Laboratoire Vision et Robotique, Polytech Orléans, rue de Blois BP, Orleans, France

  • Venue:
  • EURASIP Journal on Applied Signal Processing
  • Year:
  • 2006

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Abstract

Tuning a complete image processing chain (IPC) is not a straightforward task. The first problem to overcome is the evaluation of the whole process. Until now researchers have focused on the evaluation of single algorithms based on a small number of test images and ad hoc tuning independent of input data. In this paper, we explain how the design of experiments applied on a large image database enables statistical modeling for IPC significant parameter identification. The second problem is then considered: how can we find the relevant tuning and continuously adapt image processing to input data? After the tuning of the IPC on a typical subset of the image database using numerical optimization, we develop an adaptive IPC based on a neural network working on input image descriptors. By testing this approach on an IPC dedicated-to-road obstacle detection, we demonstrate that this experimental methodology and software architecture can ensure continuous efficiency. The reason is simple: the IPC is globally optimized, from a large number of real images and with adaptive processing of input data.