imager

Overview

About

Maintained by Aaron RobothamFirst published 2015-08-2631 releasesCRAN page ↗GitHub ↗

Fast image processing for images in up to 4 dimensions (two spatial dimensions, one time/depth dimension, one colour dimension). Provides most traditional image processing tools (filtering, morphology, transformations, etc.) as well as various functions for easily analysing image data using R. The package wraps 'CImg', https://cimg.eu, a simple, modern C++ library for image processing.

Install

R (CRAN)pak (dev)Ubuntu (r2u)

install.packages("imager", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("asgr/imager")

Development version from asgr/imager. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-imager

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

bspm (used by r2u) also needs make: sudo apt install make

Health

CRAN checks

2NOTE11OK

Failing flavors

NOTE r-devel-linux-x86_64-debian-clang
NOTE r-devel-linux-x86_64-debian-gcc

Slowest check: 12.2 min · r-oldrel-macos-x86_64

Code health

Yes

Tests · ratio 0.02

2.7%

Coverage · measured lines

99%

Documentation · exports

11

Dependencies · direct

Check history

NOTE2026-07-11
12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-04-25
12 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-04-22
11 OK · 3 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-18
10 OK · 3 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
NOTE2026-03-10
11 OK · 3 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 100%
Return-value docs: 54%
References docs: 2%

Downloads

141.3K

CRAN downloads in the past year

Rank #1,492 · ~387/day · ~11.8K/mo

Releases R versions

Daily download trend is not available in this view yet.

5.4K30 days

19.6K90 days

141.3K1 year

Compare downloads with other packages →

Also on2.4K r2u5.2K conda_forge

Repository

GitHub ↗ asgr/imager

19Stars

9Forks

4Open issues

1Open PRs

0Releases

669Commits

18Contributors

License LGPL-3.0 · 669 commits · Last activity 2026-03-30 · 0% stars, 30d

Stars over time

2024-08-11 · 172026-07-07 · 19

Repository practices

Upstream repositoryBeta

2 development-tooling and community-health practices detected across 1 family in the upstream repository

Checks run against github.com/asgr/imager on 2026-07-26.

Continuous integration (2)

GitHub ActionsTravis CI

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

21 external dependencies (excludes base and recommended)

Depends (2)

R >= 4.0.0magrittr

Imports (10)

Rcppmethodsstringr png jpeg readbitmapgrDevicespurrr downloader igraph

LinkingTo (1)

Rcpp

Suggests (11)

Cairo dplyr ggplot2 knitr magick raster rmarkdown scales testthat spatstat.geom webp

Enhances (0)

none

Dependency license breakdown →

People & History

People (7)

Maintainer (1)

Aaron Robotham

Maintainer · added in 0.45.2

Authors (1)

Simon Barthelme

Author

Contributors (5)

Haz Edine Assemlal

Contributor · added in 0.41.0

Shota Ochi

Contributor · added in 0.42.1

Rodrigo Tobar

Contributor · added in 0.45.2

David Tschumperle

Contributor · added in 0.41.0

Jan Wijffels

Contributor · added in 0.41.0

Listed in earlier versions (1)

Antoine Cecchi

no longer listed · 0.13 to 0.31

Package Timeline

31 releases. Pick two to compare their code metrics. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
1.0.8Latest
2025-12-23 · current release · diff ↗
1.0.5
2025-08-02 · diff ↗
R
R 4.5.0 released · 2025-04-11
1.0.3
2025-03-25 · diff ↗
1.0.2
2024-05-13 · diff ↗
1.0.1
2024-04-26 · diff ↗
R
R 4.4.0 released · 2024-04-24
0.45.8
2024-02-20 · diff ↗
0.45.2
2023-05-10 · diff ↗
R
R 4.3.0 released · 2023-04-21
0.42.19
2023-03-25 · diff ↗
0.42.18
2023-02-02 · diff ↗
0.42.16
2022-12-19 · diff ↗
0.42.15
2022-12-18 · diff ↗
0.42.14
2022-12-16 · diff ↗

Show 29 earlier events

R
R 4.2.0 released · 2022-04-22
0.42.13
2022-03-07 · diff ↗
0.42.11
2021-11-18 · diff ↗
0.42.10
2021-06-10 · diff ↗
R
R 4.1.0 released · 2021-05-18
0.42.8
2021-03-16 · diff ↗
0.42.7
2021-02-23 · diff ↗
0.42.3
2020-05-11 · diff ↗
R
R 4.0.0 released · 2020-04-24
0.42.1
2020-02-17 · diff ↗
unarchivedReturned to CRAN
2020-02-17
R
R 3.6.0 released · 2019-04-26
0.41.2
2019-01-23 · diff ↗
orphanedOrphaned by its maintainer
2019-01-23
no response to request to fix check issues
0.41.1
2018-05-30 · diff ↗
0.41.0
2018-05-22 · diff ↗
R
R 3.5.0 released · 2018-04-23
0.40.2
2017-04-24 · diff ↗
R
R 3.4.0 released · 2017-04-21
0.40.1
2017-03-13 · diff ↗
0.40
2017-03-10 · diff ↗
0.31
2016-09-12 · diff ↗
0.30
2016-09-05 · diff ↗
R
R 3.3.0 released · 2016-05-03
0.20
2016-04-28 · diff ↗
0.15
2016-01-07 · diff ↗
0.14
2015-09-18 · diff ↗
0.13
2015-08-26
R
R 3.2.0 released · 2015-04-16

Package metadata

First published: 2015-08-26
Total releases: 31 / 11 yrs
License: LGPL-3 OSI
Minimum R: ≥ 4.0.0
Bundled data: 988 KB / 1 file
Download size: 4.3 MB
Installed size: not tracked yet
With dependencies: not tracked yet

Overview

Install

Health

Documentation

Downloads

Repository

Repository practices

Dependencies

Code & Tests

People & History

Package metadata