SSIMmap: The Structural Similarity Index Measure for Maps

Computes the Structural Similarity Index Measure (SSIM) and its components for raster images and irregular polygon maps. The raster method follows Wang et al. (2004) <doi:10.1109/TIP.2003.819861>. The polygon method uses geographically weighted summary statistics described by Brunsdon et al. (2002) <doi:10.1016/S0198-9715(01)00009-6> with an adaptive nearest-neighbor kernel. Provides bandwidth selection, value transformations, permutation-based inference, Fire Weather Index rasters, and Toronto census-derived example data.

Package details

AuthorHui Jeong (Hailyee) Ha [aut, cre] (ORCID: <https://orcid.org/0000-0002-5229-4528>), Jed Long [aut] (ORCID: <https://orcid.org/0000-0003-3961-3085>)
MaintainerHui Jeong (Hailyee) Ha <hha24@uwo.ca>
LicenseMIT + file LICENSE
Version0.4.3
URL https://github.com/Hailyee-Ha/SSIMmap 
Package repositoryView on CRAN
Installation Install the latest version of this package by entering the following in R:
install.packages("SSIMmap")

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SSIMmap documentation built on Nov. 13, 2026, 5:09 p.m.