Reference TypeConference Proceedings
Citation KeySilvaCribFrer:2007:ImInGA
Author1 Silva, Michel Ferreira da
2 Cribari-Neto, Francisco
3 Frery, Alejandro
Affiliation1 Universidade Federal de Minas Gerais
2 Universidade Federal de Pernambuco
3 Universidade Federal de Alagoas
TitleImproved Inference for the GA0 Distribution
Conference NameBrazilian Symposium on Computer Graphics and Image Processing, 20 (SIBGRAPI)
EditorGonçalves, Luiz
Wu, Shin Ting
Book TitleProceedings
DateOct. 7-10, 2007
Publisher CityPorto Alegre
PublisherSociedade Brasileira de Computação
Conference LocationBelo Horizonte
Keywordsadjusted profile likelihoods, GA0 distribution, maximum likelihood estimation, roughness parameter, SAR images, signalized likelihood ratio test.
AbstractThis paper presents adjusted profile likelihoods for alpha, the roughness parameter of GA0(alpha, gamma, L) distribution. This distribution has been widely used in the modelling of data corrupted by speckle noise (SAR images). We focus on point estimation and on signalized likelihood ratio tests. As far as point estimation is concerned, the numerical evidence presented in the paper favors the Cox and Reid's adjustment (1987), and in what concerns signalized likelihood ratio tests, the results favor the approximation to Barndorff-Nielsen's adjustment based on the results in Fraser and Reid (1995). An application to real synthetic aperture radar imagery is presented.
Tertiary TypeTechnical Poster
Size33 KiB
Number of Files1
Target File33925.pdf
Last Update2007: administrator
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