Package: SITSAR
Title: Information Theory, Geometry and Statistics for Synthetic
        Aperture Radar Data
Version: 1.0.0
Authors@R: c(
    person("Jodavid", "Ferreira", , "jodavid@protonmail.com", role = c("aut", "cre"),
           comment = c(ORCID = "0000-0002-2131-6464")),
    person("Abraao", "Nascimento", , "abraao@de.ufpe.br", role = "aut",
           comment = c(ORCID = "0000-0003-2673-219X"))
  )
Description: Statistical models, information-theoretic measures and image
    analysis tools for Synthetic Aperture Radar (SAR) and polarimetric SAR
    (PolSAR) data. It implements intensity models (Gamma, generalized Gamma
    and G0I) and matrix models (scaled complex Wishart, G0 polarimetric and
    the compound truncated Poisson and compound geometric complex Wishart
    laws), maximum likelihood and expectation-maximization estimation,
    closed-form Shannon entropies with their asymptotic variances,
    entropy-based hypothesis tests and change detection, entropy-based
    image segmentation by (stochastic) expectation-maximization, stochastic
    distances and a family of divergence-based classifiers (Kullback-Leibler,
    Jeffreys, Bhattacharyya and Renyi) for Gaussian vector features and
    complex Wishart matrix features. The main tools are 'R6' classes and the
    classifiers are available as a 'parsnip' model, so they can be used
    inside 'tidymodels' workflows. Methods are described in Ferreira,
    Coelho and Nascimento (2021) <doi:10.1080/01431161.2020.1826060>,
    Ferreira and Nascimento (2020) <doi:10.1109/JSTARS.2020.2997666>,
    Ferreira, Nascimento and Frery (2022) <doi:10.3390/rs14205083> and
    Nascimento, Ferreira and Frery (2023) <doi:10.1007/s11222-023-10298-0>.
License: MIT + file LICENSE
URL: https://github.com/jodavid/SITSAR,
        https://jodavid.github.io/SITSAR/
BugReports: https://github.com/jodavid/SITSAR/issues
Depends: R (>= 4.1.0)
Imports: generics, graphics, grDevices, parsnip (>= 1.0.0), R6 (>=
        2.5.0), rlang, stats, tibble, utils
Suggests: dials, knitr, recipes, rmarkdown, rsample, testthat (>=
        3.0.0), tune, workflows, yardstick
VignetteBuilder: knitr
Config/testthat/edition: 3
Encoding: UTF-8
Language: en-US
LazyData: true
LazyDataCompression: xz
Config/roxygen2/version: 8.1.0
NeedsCompilation: no
Packaged: 2026-10-22 21:11:02 UTC; jodavid
Author: Jodavid Ferreira [aut, cre] (ORCID:
    <https://orcid.org/0000-0002-2131-6464>),
  Abraao Nascimento [aut] (ORCID:
    <https://orcid.org/0000-0003-2673-219X>)
Maintainer: Jodavid Ferreira <jodavid@protonmail.com>
Repository: CRAN
Date/Publication: 2026-11-06 16:20:02 UTC
Built: R 4.5.3; ; 2026-11-06 16:41:32 UTC; windows
