G’MIC (全稱 GREYC’s Magic Image Converter)是一款圖像編輯軟件，可與 GIMP 配合使用，也可作為一個獨立的應用程序，跨平台可用於 Linux 和Windows 兩個系統。G’mic提供了一個窗口，超過 500 種過濾器，為照片添加一些其他的風格。
G’mic 配備不同的接口：一個命令行工具，攝像頭的操作界面，內置QT庫和GIMP插件。可用的最新版本 G’mic 1.6.0.4，最近已發布，有很多的變化，包括：
- Command -array3d duplicates a 3d object along the X,Y and Z axes [backported].
- Command -size3d returns the bounding box size of a 3d object [backported].
- Command -imagegrid_hexagonal and related filter Arrays & tiles / Grid [hexagonal] are able to create colored hexagonal grids from images [backported].
- New plug-in filter Arrays & Tiles / Ministeck which transforms an image into it ‘Ministeck’ representation [backported].
- New plug-in filter Patterns / Crystal which does linear interpolation of pixels located on image edges [backported].
- New command -delaunay3d which computes the delaunay triangulation of a 2d or 3d point cloud [backported].
- New plug-in filter Artistic / Polygonize [delaunay] which makes your image look like a triangulation [backported].
- Filters of the G’MIC plug-in for GIMP can now set the blending mode and opacity of their output layers, as well as their X,Y positions.
- G’MIC can now be compiled with default pixel type ‘double’ instead of ‘float’. Use this to get more precision during computation (but beware, it takes twice as much memory for storing images).
一個變化的完整列表，請參閱發行說明。
安裝，因為有PPA可用（支持 Ubuntu 15.04、14.10、14.04、12.04 及衍生系統用戶），安裝很方便，打開終端，輸入以下命令：
sudo add-apt-repository ppa:otto-kesselgulasch/gimp
sudo apt-get update
sudo apt-get install gmic gimp-gmic
卸載 gmic 與 gimp-gmic 輸入：
sudo apt-get remove gmic gimp-gmic
更多Ubuntu相關信息見Ubuntu 專題頁面 http://www.linuxidc.com/topicnews.aspx?tid=2
