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  • Autor
    • Knöbelreiter, Patrick
    • Reinbacher, Christian
    • Shekhovtsov, Alexander
    • Pock, Thomas
  • TitelEnd-to-End Training of Hybrid CNN-CRF Models for Stereo
  • Volltext
  • Persistent Identifier
  • Erschienen inarXiv.org e-Print archive
  • Erscheinungsjahr2016
  • LicenceCC-BY
  • ZugriffsrechteCC-BY
  • Download Statistik13
  • Peer ReviewJa
  • AbstractWe propose a novel method for stereo estimation, combining advantages of convolutional neural networks (CNNs) and optimization-based approaches. The optimization, posed as a conditional random field (CRF), takes local matching costs and consistency-enforcing (smoothness) costs as inputs, both estimated by CNN blocks. To perform the inference in the CRF we use an approach based on linear programming relaxation with a fixed number of iterations. We address the challenging problem of training this hybrid model end-to-end. We show that in the discriminative formulation (structured support vector machine) the training is practically feasible. The trained hybrid model with shallow CNNs is comparable to state-of-the-art deep models in both time and performance. The optimization part efficiently replaces sophisticated and not jointly trainable (but commonly applied) post-processing steps by a trainable, well-understood model.