R Observatory: Metrics for opencv version 0.5.2

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

opencv

0.5.2

Bindings to 'OpenCV' Computer Vision Library

2packages depend

20.7Kdownloads / year

21.6%test coverage

12/12checks pass

Overview

About

Maintained by Jeroen OomsFirst published 2019-04-0112 releasesCRAN page ↗GitHub ↗

Exposes some of the available 'OpenCV' https://opencv.org/ algorithms, such as a QR code scanner, and edge, body or face detection. These can either be applied to analyze static images, or to filter live video footage from a camera device.

Install

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

install.packages("opencv", 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("ropensci/opencv")

Development version from ropensci/opencv. 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-opencv

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

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-opencv

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

Health

CRAN checks

12OK

Slowest check: 13.5 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 0.03

21.6%

Coverage · measured lines

97%

Documentation · exports

2

Dependencies · direct

Check history

OK2026-08-05
12 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-08-01
11 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-04-25
11 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-04-22
10 OK · 3 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-18
9 OK · 3 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE

Show 1 earlier snapshots

NOTE2026-03-10
10 OK · 3 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesNopkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 100%
Return-value docs: 25%
References docs: 0%

Downloads

20.7K

CRAN downloads in the past year

Rank #5,022 · ~57/day · ~1.7K/mo

Releases R versions

Daily download trend is not available in this view yet.

42230 days

1.5K90 days

20.7K1 year

Compare downloads with other packages →

Also on407 r2u

Repository

GitHub ↗ ropensci/opencv

141Stars

29Forks

12Open issues

3Open PRs

5Releases

213Commits

4Contributors

unconf18opencvopencv-libraryrr-packagerstatsunconf

213 commits · Last activity 2026-02-21 · 0% stars, 30d

Stars over time

2025-07-14 · 1402026-07-07 · 141

Repository practices

Upstream repositoryBeta

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

Checks run against github.com/ropensci/opencv on 2026-08-23.

Continuous integration (1)

GitHub Actions

Lint, format, editor (1)

RStudio project

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

Dependencies

Declared dependencies

5 external dependencies (excludes base and recommended)

Depends (0)

none

Imports (2)

Rcpp magrittr

LinkingTo (1)

Rcpp

Suggests (3)

grDevicesqrcode testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

2direct

0indirect

qrcode recogito

Code & Tests

People & History

People (2)

Maintainer (1)

Jeroen Ooms

Author, Maintainer

Authors (2)

Jeroen Ooms

Author, Maintainer

Jan Wijffels

Author · added in 0.2.0

Package Timeline

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

R
R 4.6.0 released · 2026-04-24
0.5.2Latest
2026-02-22 · current release · diff ↗
R
R 4.5.0 released · 2025-04-11
0.5.1
2025-03-31 · diff ↗
0.5.0
2025-03-06 · diff ↗
0.4.1
2024-10-04 · diff ↗
R
R 4.4.0 released · 2024-04-24
0.4.0
2023-10-29 · diff ↗
0.3.1
2023-10-16 · diff ↗
0.3.0
2023-09-25 · diff ↗
R
R 4.3.0 released · 2023-04-21
0.2.3
2022-10-16 · diff ↗
0.2.2
2022-04-28 · diff ↗
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
0.2.1
2021-05-04 · diff ↗

Show 5 earlier events

0.2.0
2020-09-24 · diff ↗
R
R 4.0.0 released · 2020-04-24
R
R 3.6.0 released · 2019-04-26
0.1
2019-04-01
R
R 3.5.0 released · 2018-04-23

Package metadata

First published: 2019-04-01
Total releases: 12 / 7 yrs
License: MIT + file LICENSE OSI
Download size: 214 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("opencv")

Format

Ooms, J., & Wijffels, J. (2026). opencv: Bindings to 'OpenCV' Computer Vision Library (Version 0.5.2) [Computer software]. https://doi.org/10.32614/CRAN.package.opencv

This is what citation() produces when a package has no citation file of its own. If it prints something else, use that.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for opencv version 0.5.2 [Data set]. HJJB, LLC. Data release v2026-08-23. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-23, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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