multitoner - libre graphics meeting · 2014-11-11 · we need multitone: what does it do? what’s...
TRANSCRIPT
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https://github.com/graphicore/multitoner
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I:
http://graphicore.de
Lasse Fisterweb application developer graphic designer, typographer
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We:
https://silber-und-blei.com
Annette Karg & Lasse Fister
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Mission Statement:We make valuable[photography] Booksusing exclusively FLOSS.
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Research:black-and-white photography book
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We need Multitone:What does it do?What’s it good for?
“Multitone color systems use a single-componentimage to specify multiple color components.
In a duotone, for example, a single-componentimage can be used to specify both the blackcomponent and a spot color component. […]”
— PostScript Language Reference
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Image Workflow:Source camera RAW or scanned
Darktable, etc.—RAW processing
Gimp—image-retouching
???—multitone magic
ConTeXt—layout, typesetting
Result: PDF for the print shop
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There was no FLOSS to createmultitone images.But we are on a mission!Turns out EPS can represent this.
(Thanks for the hint, Photoshop.)
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Preparations:learn (some) PostScriptenhance python-ghostscript
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Made with Love and:• Python 2.7• Gtk+ 3 via PyGObjet• Cairo via Pycairo• Ghostscript via python-ghostscript• SciPy and NumPy
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Live Demo
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What’s missing?color management for previewsGhostscript bug is blocking :-((option -sDeviceNProfile)
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Adopt Color Management:InterfacesData Structure…
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Color Profile Sourcing:Help is appreciated!Do you know an interested andcapable print shop?
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Go Printing!Version 1.0
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from __future__ import:• color profile library• better previews without ICC-Profile• automatic best fit curves• “component” based separations• automatic best separations• high-fidelity color e.g. Hexachrome
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Contribute:• support other Operating Systems• packaging• write documentation• start a Libre Printing Project• code, of course
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Thank Youhttps://github.com/graphicore/multitonerhttps://silber-und-blei.comhttp://[email protected]: @silberundbleihttps://www.facebook.com/silberundbleiLasse Fister <[email protected]>twitter: @lassefister