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  • Research Article
  • Open Access

Generalized Method for Sampling Spatially Correlated Heterogeneous Speckled Imagery

EURASIP Journal on Advances in Signal Processing20012001:726342

  • Received: 10 January 2000
  • Published:


This paper presents a general result for the simulation of correlated heterogeneous targets, which are present in images corrupted by speckle noise. This technique is based on the use of a correlation mask and Gaussian random variables, in order to obtain spatially dependent Gamma deviates. These Gamma random variables, in turn, allow the obtainment of correlated deviates with specified correlation structure. The theoretical properties of the procedure are presented, along with the corresponding algorithm.


  • image modelling
  • speckle noise
  • spatial correlation
  • stochastic simulation

Authors’ Affiliations

Facultad de Matemática Astronomía y Física, Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba, 5000, Argentina
Centro de Informática, Universidade Federal de Pernambuco, CP 7851, Recife, PE, 54310-070, Brazil


© Bustos et al. 2001