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Emgu CV is a cross platform .Net wrapper to the OpenCV image processing library. Allowing OpenCV functions to be called from .NET compatible languages such as C#, VB, VC++, IronPython etc. The wrapper can be compiled by Visual Studio, Xamarin Studio and Unity, it can run on Windows, Linux, Mac OS X, iOS, Android and Windows Phone.

Latest News

• 2020-01-26 Emgu.CV-4.2.0 release is available in github and nuget. See change log and known issues. Emgu.CV.dll is now defaulted to .NetStandard 2.0 and the nuget package installation will require an Emgu.CV.runtime.{platform} package that contains the native binary for the specific platforms, on top of the Emgu.CV nuget package, that contains only the .Net Standard 2.0 dll.
• 2019-10-06 Emgu.CV-4.1.1 release is available in github and nuget. See change log and known issues.
• 2019-05-25 Emgu.CV-4.1.0 release is available in github and nuget. See change log and known issues.
• 2019-04-16 Emgu.CV-4.0.1 release is available in github and nuget. See change log and known issues.
• 2018-10-26 Emgu.CV-3.4.3 release is available in sourceforge. See change log and known issues.
• 2018-04-15 Emgu.CV-3.4.1 release is available in sourceforge. See change log and known issues.
• 2017-11-04 Emgu.CV-3.3.0 release is available in sourceforge. For Mac OS, only Visual Studio for Mac is supported, we have dropped support for Xamarin Studio. See change log and known issues.
• 2017-05-08 Emgu.CV-3.2.0 release is available in sourceforge. Our Emgu CV for Mac OS commercial release now includes pre-compiled binary & demo for Xamarin.Mac and Xamarin.Forms for Mac. It is compatible with Xamarin Studio and Visual Studio for Mac. See change log and known issues.
• 2017-03-06 We had a few inquiries asking if the 3.1.0-r16.12 UWP / Windows Phone release can be run on XBox One. The answer is YES, our demo program can run on an XBox One under Dev Mode!
• 2017-01-08 The git repository has been moved from Sourceforge to GitHub . We will use Github for bug tracking in the future. Due to the overwhelming amount of Spam on the Discussion forum, if you are a new user making a first post, you will need to wait for our approval before it can appear on the forum. Sorry for the inconvenience.
• 2016-12-17 Emgu.CV-3.1.0-r16.12 release is available in sourceforge. This version added UWP support for Windows Phone commercial license. See change log and known issues.
• 2016-05-01 Emgu.CV-3.1.0 for Xamarin is now also available to be purchased in Xamarin Component Store. Demo version that supports Android x86 and iOS simulator can be downloaded for free.
• 2016-02-06 Emgu.CV-3.1.0 final release is available in sourceforge. This version added 64 bit Android (x86_64, arm64_v8) support for Xamarin. See change log and known issues.
• 2015-07-12 Emgu.CV-3.0.0 final release is available in sourceforge. This is the first stable release based on Open CV 3.0 final. See change log and known issues.
• 2015-05-17 Emgu.CV-3.0.0-rc1 is available in sourceforge. This version adds support for Windows Phone (8.1 is required) and Unity 5.0. See change log and known issues.
• 2015-03-08 Added support for Raspberry Pi 2. Build instruction is available here. Happy hacking with this credit card size quad-core computer for only $35 !!!
• 2015-01-17 Added 64bit iOS support (through Xamarin iOS unified SDK). The iOS packages (2.4.10-unified & 3.0.0-beta-unified) are available for download for Emgu CV iOS commercial license owners.
• 2014-12-06 Emgu.CV-3.0.0-alpha is available in sourceforge. See change log and known issues.
• 2014-12-06 Emgu.CV-2.4.10 is available in sourceforge. See change log and known issues.
• 2013-08-31 Added support to Windows 8 Store App (x86, x64) as part of Windows commercial release. Android version is now stable for commercial release.
• 2012-09-16 Emgu.CV-2.4.2 is available in sourceforge. See change log and known issues.
• 2012-05-26 Emgu.CV-2.4.0 is available in sourceforge. This version adds support for iOS and Android. See change log and known issues.
• 2011-08-20 Emgu.CV-2.3.0 is available in sourceforge. See change log and known issues.
• 2011-02-05 Emgu.CV-2.2.1.1150 is available in sourceforge. See change log and known issues.
• 2010-12-15 Emgu.CV-2.2.0.1010 is available in sourceforge. See change log and known issues.
• 2010-04-06 Emgu.CV-2.1.0.0 is available in sourceforge. It is released on the same day as OpenCV 2.1! In this release we have keep up our cross platform promise and release binaries for 64-bit windows, as well as 32 & 64 bit debian package for Unbuntu and 32 bit rpm package for Fedora 12! See change log and known issues.

• 2009-10-25 Emgu.CV-2.0.1.0 is available in sourceforge. Welcome to the first .NET wrapper that is compatible with OpenCV 2.0! See change log and known issues.

• 2009-07-12 Emgu.CV-2.0.0.0 Alpha is available in sourceforge. This version is built with OpenCV SVN 1918 and is not recommend for production environment. See change log and known issues.

• 2009-02-25 Emgu.CV-1.5.0.0 is available in sourceforge. See change log and known issues.

• 2008-11-24 Emgu.CV-1.4.0.0 is available in sourceforge. See change log and known issues.

• 2008-09-02 Emgu.CV-1.3.0.0 is available in sourceforge. See change log.

• 2008-05-24 Emgu.CV-1.2.2.0 is available in sourceforge. See change log.

• 2008-05-10 Emgu CV Discussion Forum is available at http://www.emgu.com/forum

Platform Features

Windows

Name	Emgu CV (Open Source)	Emgu CV for Windows (Commercial Optimized)		Emgu CV for Unity
Development tools	Visual Studio 2012 and up	Visual Studio 2012 and up	Visual Studio 2013 and up	Unity 3D Pro v5.5 and up
Platform	Windows	Windows	UWP / Windows 8.1 Store app	Windows Desktop Standalone
Supported CPU Architecture	i386, x64	i386, x64	i386, x64	i386 (Editor & Standalone), x64 (Standalone)
CUDA GPU Processing	$\checkmark$	$\checkmark$	X	X
OpenCL (GPU&CPU)	$\checkmark$	$\checkmark$	X	$\checkmark$
Tesseract OCR	$\checkmark$	$\checkmark$	$\checkmark$	$\checkmark$
Compiled with Intel C++ Compiler,TBB & IPP	X	$\checkmark$	X	X
Exception Handling	$\checkmark$	$\checkmark$	$\checkmark$	$\checkmark$
Debugger Visualizer	$\checkmark$	$\checkmark$	X	X
Emgu.CV.UI	$\checkmark$	$\checkmark$	X	X
License	GPL	Commercial License		Commercial License

• Windows Store App version is included in the Windows Commercial release
• Windows Phone is no longer supported

Mobile Devices

Name	Emgu CV for Xamarin iOS	Emgu CV for Xamarin Android	Emgu CV for UWP and Windows Phone	Emgu CV for Unity
Requirement	Xamarin Studio Community+ or Visual Studio for Mac is required, optional Visual Studio 2015 Community+	Visual Studio 2015 Community+ or Xamarin Studio Community+ or Visual Studio for Mac	Visual Studio 2013+	Unity 3D v5 Pro / Free version
Platform	iOS (iPhone, IPad, IPod Touch)	Android	UWP and Windows Phone 8.1	iOS (iPhone, IPad, IPod Touch)	Android	Windows Phone 8.1	Windows UWP
Supported Device	armv7, armv7a, arm64	armeabi, armeabi-v7a, arm64-v8a, x86, x86_64	arm, x86, x64	armv7, armv7a, arm64	armeabi-v7a, x86	arm	arm, x86, x86_64
Supported Simulator	i386, x64	armeabi, armeabi-v7a, arm64-v8a, x86, x86_64	x86	i386	armeabi-v7a, x86	x86	x86, x86_64
CUDA GPU Processing	X	X	X	X	X	X	X
OpenCL 1.2 (GPU&CPU)	X	$\checkmark$ (on supported devices)	X	X	$\checkmark$ (on supported devices)	X	X
Tesseract OCR	$\checkmark$	$\checkmark$	$\checkmark$	$\checkmark$	$\checkmark$	$\checkmark$	$\checkmark$
Exception Handling	$\checkmark$	$\checkmark$	$\checkmark$	$\checkmark$	$\checkmark$	$\checkmark$	$\checkmark$
License	Commercial License	Commercial License	Commercial License	Commercial License

OSX, Linux, Unix

The commercial release include prebuild binary for OSX. For Linux and Unix platform, you need to compile the binary from source.

Name	Emgu CV (Open Source)	Emgu CV for OSX, Linux Unix(Commercial License)	Emgu CV for Unity
Development Tools	Xamarin Studio or MonoDevelop	Visual Studio for Mac or Xamarin Studio	Unity 3D Pro v5.1
OSX	$\checkmark$	$\checkmark$	x86 & x64 (Editor & Standalone)
Linux, Unix	$\checkmark$	$\checkmark$	X
CUDA GPU Processing	X	X	X
OpenCL (GPU&CPU)	$\checkmark$	$\checkmark$	$\checkmark$
Tesseract OCR	$\checkmark$	$\checkmark$	$\checkmark$
Exception Handling	$\checkmark$	$\checkmark$	$\checkmark$
License	GPL	Commercial License	Commercial License

Advantage of Emgu CV

Cross Platform

Emgu CV is written entirely in C#. The benefit is that it can be compiled in Mono and therefore is able to run on any platform Mono supports, including iOS, Android, Windows Phone, Mac OS X and Linux. A lot of efforts has been spent to have a pure C# implementation since the headers have to be ported, compared with managed C++ implementation where header files can simply be included. But it is well worth it if you see Emgu CV running on Fedora 10! Plus it always gives you the comfort knowing that your code is cross-platform.

Cross Language and comes with example code

Emgu CV can be used from several different languages, including C#, VB.NET, C++ and IronPython. On this wiki, we provide examples for all those languages, which are available from the Examples section on Tutorial page. Our Discussion Forum is also available if you have any questions related to your favourite programming language.

Other Advantages

• Image class with Generic Color and Depth
• Automatic garbage collection
• XML Serializable Image
• XML Documentation and intellisense support
• The choice to either use the Image class or direct invoke functions from OpenCV
• Generic operations on image pixels

Architecture Overview

Emgu CV has two layers of wrapper as shown below

• The basic layer (layer 1) contains function, structure and enumeration mappings which directly reflect those in OpenCV.
• The second layer (layer 2) contains classes that mix in advantanges from the .NET world.