Computer-generated pen-and-ink illustration
SIGGRAPH '94 Proceedings of the 21st annual conference on Computer graphics and interactive techniques
Proceedings of the 24th annual conference on Computer graphics and interactive techniques
A non-photorealistic lighting model for automatic technical illustration
Proceedings of the 25th annual conference on Computer graphics and interactive techniques
Painterly rendering with curved brush strokes of multiple sizes
Proceedings of the 25th annual conference on Computer graphics and interactive techniques
Lumo: illumination for cel animation
NPAR '02 Proceedings of the 2nd international symposium on Non-photorealistic animation and rendering
The lit sphere: a model for capturing NPR shading from art
GRIN'01 No description on Graphics interface 2001
SIGGRAPH '84 Proceedings of the 11th annual conference on Computer graphics and interactive techniques
Stylized Highlights for Cartoon Rendering and Animation
IEEE Computer Graphics and Applications
X-toon: an extended toon shader
Proceedings of the 4th international symposium on Non-photorealistic animation and rendering
Image vectorization using optimized gradient meshes
ACM SIGGRAPH 2007 papers
Diffusion curves: a vector representation for smooth-shaded images
ACM SIGGRAPH 2008 papers
Line-art illustration of dynamic and specular surfaces
ACM SIGGRAPH Asia 2008 papers
Automatic and topology-preserving gradient mesh generation for image vectorization
ACM SIGGRAPH 2009 papers
Programmable rendering of line drawing from 3D scenes
ACM Transactions on Graphics (TOG)
Diffusion constraints for vector graphics
NPAR '10 Proceedings of the 8th International Symposium on Non-Photorealistic Animation and Rendering
Freeform vector graphics with controlled thin-plate splines
Proceedings of the 2011 SIGGRAPH Asia Conference
A vectorial solver for free-form vector gradients
ACM Transactions on Graphics (TOG) - Proceedings of ACM SIGGRAPH Asia 2012
A Subdivision-Based Representation for Vector Image Editing
IEEE Transactions on Visualization and Computer Graphics
Stylized vector art from 3D models with region support
EGSR'08 Proceedings of the Nineteenth Eurographics conference on Rendering
Optimizing environment maps for material depiction
EGSR'11 Proceedings of the Twenty-second Eurographics conference on Rendering
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Vector graphics represent images with compact, editable and scalable primitives. Skillful vector artists employ these primitives to produce vivid depictions of material appearance and lighting. However, such stylized imagery often requires building complex multi-layered combinations of colored fills and gradient meshes. We facilitate this task by introducing vector shade trees that bring to vector graphics the flexibility of modular shading representations as known in the 3D rendering community. In contrast to traditional shade trees that combine pixel and vertex shaders, our shade nodes encapsulate the creation and blending of vector primitives that vector artists routinely use. We propose a set of basic shade nodes that we design to respect the traditional guidelines on material depiction described in drawing books and tutorials. We integrate our representation as an Adobe Illustrator plug-in that allows even inexperienced users to take a line drawing, apply a few clicks and obtain a fully colored illustration. More experienced artists can easily refine the illustration, adding more details and visual features, while using all the vector drawing tools they are already familiar with. We demonstrate the power of our representation by quickly generating illustrations of complex objects and materials.