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https://github.com/dtschump/CImg

The CImg Library is a small and open-source C++ toolkit for image processing
https://github.com/dtschump/CImg

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The CImg Library is a small and open-source C++ toolkit for image processing

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![Logo](http://cimg.eu/img/logo_header.jpg)

##### http://cimg.eu



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![Build](https://github.com/GreycLab/CImg/workflows/Build%20then%20test/badge.svg)

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The **CImg Library** is a **small** and **open-source** **C++ library** for **image processing**, designed with these properties in mind:



![Usefulness](http://cimg.eu/img/item_usefulness.jpg) **CImg** defines *classes* and *methods* to manage images in your own C++ code. You can use **CImg** to load/save various file formats, access pixel values, display/transform/filter images, draw primitives (text, faces, curves, 3d objects, ...), compute statistics, manage user interactions on images, and so on...



![Genericity](http://cimg.eu/img/item_genericity.jpg) **CImg** defines a single image class able to represent datasets having up to *4-dimensions* (from 1d scalar signals to 3d hyperspectral volumetric images), with *template pixel types* (`bool,char,int,float,...`). It also handles image *collections* and *sequences*.



![Portability](http://cimg.eu/img/item_portability.jpg) **CImg** is *self-contained*, *thread-safe* and *highly portable*. It fully works on *different operating systems* (`Unix,Windows,MacOS X,*BSD,...`) and is compatible with *various C++ compilers* (`Visual C++,g++,clang++,icc,...`).



![Simplicity](http://cimg.eu/img/item_simplicity.jpg) **CImg** is *lightweight*. It is made of a single header file [`CImg.h`](https://github.com/GreycLab/CImg/raw/master/CImg.h) that must be included in your C++ source. It defines only *four* different classes, encapsulated in the namespace `cimg_library`. It can be compiled using a minimal set of standard C++ and system libraries only. *No need for exotic or complex dependencies*.



![Extensibility](http://cimg.eu/img/item_extensibility.jpg) Although not mandatory, **CImg** can use functionalities of external tools/libraries such as [Board](http://libboard.sourceforge.net/), [FFMPEG](http://ffmpeg.mplayerhq.hu/), [FFTW3](http://www.fftw.org/), [GraphicsMagick](http://www.graphicsmagick.org/), [ImageMagick](http://www.imagemagick.org/), [Lapack](http://www.netlib.org/lapack/), [libcurl](http://curl.haxx.se/libcurl/), [libjpeg](http://www.ijg.org/), [libpng](http://www.libpng.org/pub/png/libpng.html), [libtiff](http://www.libtiff.org/), [Magick++](http://www.imagemagick.org/Magick++/), [OpenEXR](http://www.openexr.com/), [OpenCV](http://http://opencv.willowgarage.com/wiki/), [OpenMP](http://www.openmp.org/) or [XMedCon](http://xmedcon.sourceforge.net/). Moreover, a simple *plug-in* mechanism allows any user to directly enhance the library capabilities according to their needs.



![Freedom](http://cimg.eu/img/item_freedom.jpg) **CImg** is a *free, open-source library* distributed under the [*CeCILL-C*](http://www.cecill.info/licences/Licence_CeCILL-C_V1-en.txt) (close to the GNU LGPL) or [CeCILL](http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt) (compatible with the GNU GPL) licenses. It can be used in commercial applications.



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> **CImg** stands for **Cool Image** : It is _easy to use_, _efficient_ and is intended to be a very pleasant toolbox to design image processing algorithms in C++. Due to its generic conception, it can cover a wide range of image processing applications.



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