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Whittle maximum likelihood estimator for isotropic fractional Brownian images

  • Rachid Harba
  • , Gerard Jacquet
  • , Carlos Wilches
  • , Martha Zequera
  • , Luis Vilcahuaman

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Fractional Brownian motion (fBm) of H parameter is a stochastic fractal process that can be used to create virtual landscapes or to model 2D physical phenomenon. In this communication, we explore the Whittle maximum likelihood estimator (WMLE) to assess the H parameter of isotropic fBm images. We have compared a 1D estimator assessed from the lines increments of the image, to a 2D estimator of the 2D increments of the image. These 2 estimators were tested on 2D fBm generated using the exact Stein method. Results are of high quality. The mean H values are very close to the true ones for both estimators. The standard deviations of the 2D estimates are 2 times smaller than in 1D and should be preferred for practical application as for example texture analysis.

Original languageEnglish
Title of host publication2014 IEEE International Symposium on Signal Processing and Information Technology, ISSPIT 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479918126
DOIs
StatePublished - 19 Oct 2015
EventIEEE International Symposium on Signal Processing and Information Technology, ISSPIT 2014 - Noida, India
Duration: 15 Dec 201417 Dec 2014

Publication series

Name2014 IEEE International Symposium on Signal Processing and Information Technology, ISSPIT 2014

Conference

ConferenceIEEE International Symposium on Signal Processing and Information Technology, ISSPIT 2014
Country/TerritoryIndia
CityNoida
Period15/12/1417/12/14

Keywords

  • 2D Fractional Brownian motion
  • Whittle estimator
  • image synthesis
  • periodic embedding

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