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This package was approved by moderator ferventcoder on 2/19/2016.

Pass the package argument /InstallationPath to set where OpenCV will unzip itself. Left alone, it will unzip in the root C: drive. Remember, it will always unzip itself to a new folder called \opencv in the directory you chose.
Pass the package argument /Environment to add OpenCV to your user environment variables, which may or may not be necessary. Check the installation guide on OpenCV's website to determine the precise directory stucture you want to add to your path. The OPENCVDIR variable will be created/replaced, and Path will be appended with %OPENCVDIR%\bin.

OpenCV is released under a BSD license and hence it's free for both academic and commercial use. It has C++, C, Python and Java interfaces and supports Windows, Linux, Mac OS, iOS and Android. OpenCV was designed for computational efficiency and with a strong focus on real-time applications. Written in optimized C/C++, the library can take advantage of multi-core processing. Enabled with OpenCL, it can take advantage of the hardware acceleration of the underlying heterogeneous compute platform. Adopted all around the world, OpenCV has more than 47 thousand people of user community and estimated number of downloads exceeding 9 million. Usage ranges from interactive art, to mines inspection, stitching maps on the web or through advanced robotics.

To install OpenCV, run the following command from the command line or from PowerShell:

C:\> choco install opencv --version 3.1.0

To upgrade OpenCV, run the following command from the command line or from PowerShell:

C:\> choco upgrade opencv --version 3.1.0


  • tools\chocolateyinstall.ps1 Show
    $arguments = @{}
    $packageParameters = $env:chocolateyPackageParameters
    $ErrorActionPreference = 'Stop';
    $packageName= 'OpenCV'
    $toolsDir   = "$(Split-Path -parent $MyInvocation.MyCommand.Definition)"
    $url        = ''
    $installationPath = "C:\"
    if ($packageParameters) {
        $match_pattern = "\/(?<option>([a-zA-Z]+)):(?<value>([`"'])?([a-zA-Z0-9- _\\:\.]+)([`"'])?)|\/(?<option>([a-zA-Z]+))"
        $option_name = 'option'
        $value_name = 'value'
        if ($packageParameters -match $match_pattern ) {
            $results = $packageParameters | Select-String $match_pattern -AllMatches
            $results.matches | % {
        else {
            Throw "Package Parameters were found but were invalid (REGEX Failure)"
        if ($arguments.ContainsKey("InstallationPath")) {
            Write-Host "You chose to unzip OpenCV in" $arguments["InstallationPath"]
            $installationPath = $arguments["InstallationPath"]
        else {
    		Write-Host "No directory specified, installing to" $installationPath
        if ($arguments.ContainsKey("Environment")) {
            Write-Host "Creating OPENCV_DIR environment variable."
            $newpath = [environment]::GetEnvironmentVariable("Path","User") + ";%OPENCV_DIR%\bin"
        else {
            Write-Host "You will need to manually create an OPENCV_DIR environment variable then add %OPENCV_DIR%\bin to your PATH.  Read the OpenCV documentation for more details."
    else {
    	Write-Host "No directory specified, installing to" $installationPath"."
    	Write-Host "To install to a specific directory, pass '/InstallationPath:C:\path\to'. OpenCV will create its own folder within the directory you passed."
    	Write-Host "You will need to manually create an OPENCV_DIR environment variable then add %OPENCV_DIR%\bin to your PATH."
        Write-Host "Alternately, you can rerun this and pass '/Environment:C:\path\to' Follow the OpenCV instructions on their website to figure out which directory you would want."
    $packageArgs = @{
    		packageName   = $packageName
    		unzipLocation = $installationPath
    		fileType      = 'EXE'
    		url           = $url
    Install-ChocolateyZipPackage @packageArgs

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This package has no dependencies.

Package Maintainer(s)

Software Author(s)

  • Itseez


Release Notes

This is the first stabilization update in 3.x series. It shall be reminded that since OpenCV 3.0 we�ve changed the version enumeration scheme, so that 3.1 is the same sort of update to 3.0 as 2.4.1 was to 2.4.0.

Version History

Version Downloads Last updated Status
OpenCV 3.4.1 1578 Sunday, March 11, 2018 approved
OpenCV 3.4.0 763 Tuesday, January 9, 2018 approved
OpenCV 3.3.1 563 Wednesday, November 29, 2017 approved
OpenCV 3.3.0 1013 Thursday, November 9, 2017 approved
OpenCV 3.2.0 3111 Thursday, March 9, 2017 approved
OpenCV 1821 Saturday, July 2, 2016 approved
OpenCV 3.1.0 453 Thursday, February 18, 2016 approved
OpenCV 101 Sunday, March 11, 2018 approved
OpenCV 95 Thursday, January 18, 2018 approved
Show More

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