Description
Turning a photo into a marker drawing in a normal editor means a stack of layers, filters and masks, twenty steps deep in somebody's tutorial — and the next photo starts from zero. In G'MIC that effect is one entry called Marker Drawing: pick it from a list of 600-plus filters and tune a column of sliders with the preview updating as you drag.
It is not another paint program, it is an image-processing framework. The same filters run as a plug-in inside GIMP, Krita, Paint.NET and Photoshop, as a command-line tool over a whole directory, or as a C++ library inside your own code. It comes out of academia — the GREYC lab in France — so the denoising, anisotropic smoothing and texture-synthesis algorithms are the real published ones rather than a preset with a nice name.
600+ filters, grouped: artistic, deformations, details, repair and denoising, pattern generation and more, with a search box over the tree so "sketch", "halftone" or "painting" is one keystroke away.
Live parameter preview: every filter exposes sliders and dropdowns on the right while the centre pane refreshes as you change them, zoomable to 100% — no undo-redo loop to judge a setting.
Runs as a plug-in: G'MIC-Qt plugs into GIMP, Krita, Paint.NET, Photoshop and Affinity, writing results back to the active layer with input and output modes (in place, new layer, new window) you choose.
Command-line batching: the gmic binary applies the same pipeline across a directory and chains operations together, which is what makes it scriptable.
Research-grade denoising: anisotropic smoothing and non-local means are built in, holding edges on high-ISO noise far better than a generic noise-reduction slider.
More than 2D images: the data model covers 1D signals through 3D volumetric and multi-spectral sequences, so medical and scientific data fit too.
Filters update online: tick Internet in the interface and new community filters arrive without waiting for a release.
CeCILL licensed: free software, LGPL-compatible, source available, with builds for Windows, macOS and Linux.
It is not another paint program, it is an image-processing framework. The same filters run as a plug-in inside GIMP, Krita, Paint.NET and Photoshop, as a command-line tool over a whole directory, or as a C++ library inside your own code. It comes out of academia — the GREYC lab in France — so the denoising, anisotropic smoothing and texture-synthesis algorithms are the real published ones rather than a preset with a nice name.
Features
600+ filters, grouped: artistic, deformations, details, repair and denoising, pattern generation and more, with a search box over the tree so "sketch", "halftone" or "painting" is one keystroke away.
Live parameter preview: every filter exposes sliders and dropdowns on the right while the centre pane refreshes as you change them, zoomable to 100% — no undo-redo loop to judge a setting.
Runs as a plug-in: G'MIC-Qt plugs into GIMP, Krita, Paint.NET, Photoshop and Affinity, writing results back to the active layer with input and output modes (in place, new layer, new window) you choose.
Command-line batching: the gmic binary applies the same pipeline across a directory and chains operations together, which is what makes it scriptable.
Research-grade denoising: anisotropic smoothing and non-local means are built in, holding edges on high-ISO noise far better than a generic noise-reduction slider.
More than 2D images: the data model covers 1D signals through 3D volumetric and multi-spectral sequences, so medical and scientific data fit too.
Filters update online: tick Internet in the interface and new community filters arrive without waiting for a release.
CeCILL licensed: free software, LGPL-compatible, source available, with builds for Windows, macOS and Linux.
