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Jointly Optimizing 3D Model Fitting and Fine-Grained Classification

  • Yen-Liang Lin
  • Vlad I. Morariu
  • Winston Hsu
  • Larry S. Davis
Part of the Lecture Notes in Computer Science book series (LNCS, volume 8692)

Abstract

3D object modeling and fine-grained classification are often treated as separate tasks. We propose to optimize 3D model fitting and fine-grained classification jointly. Detailed 3D object representations encode more information (e.g., precise part locations and viewpoint) than traditional 2D-based approaches, and can therefore improve fine-grained classification performance. Meanwhile, the predicted class label can also improve 3D model fitting accuracy, e.g., by providing more detailed class-specific shape models. We evaluate our method on a new fine-grained 3D car dataset (FG3DCar), demonstrating our method outperforms several state-of-the-art approaches. Furthermore, we also conduct a series of analyses to explore the dependence between fine-grained classification performance and 3D models.

Keywords

Active Shape Model Landmark Location Fisher Vector Pickup Truck Deformable Part Model 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Yen-Liang Lin
    • 1
  • Vlad I. Morariu
    • 2
  • Winston Hsu
    • 1
  • Larry S. Davis
    • 2
  1. 1.National Taiwan UniversityTaipeiTaiwan
  2. 2.University of MarylandCollege ParkUSA

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