Geometric feature extraction by a multimarked point process

  • Lafarge F
  • Gimel'Farb G
  • Descombes X
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This paper presents a new stochastic marked point process for describing images in terms of a finite library of geometric objects. Image analysis based on conventional marked point processes has already produced convincing results but at the expense of easy parameter tuning, short computing time, and unspecific models. Our more general multi-marked point process has simpler parametric setting, yields notably shorter computing times and can be applied to a variety of applications. Both linear and areal primitives extracted from a library of geometric objects are matched to a given image using a probabilistic Gibbs model, and a Jump- Diffusion process is performed to search for the optimal object configuration. Experiments with remotely sensed images and natural textures show the proposed approach has good potential. We conclude with a discussion about the insertion of more complex object interactions in the model by studying the compromise between model complexity and efficiency

Author-supplied keywords

  • Monte Carlo simulations.
  • Object extraction
  • remote sensing
  • stochastic models
  • texture analysis

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  • Florent Lafarge

  • Georgy Gimel'Farb

  • Xavier Descombes

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