Toolglass and magic lenses: the see-through interface
SIGGRAPH '93 Proceedings of the 20th annual conference on Computer graphics and interactive techniques
Computer-generated pen-and-ink illustration
SIGGRAPH '94 Proceedings of the 21st annual conference on Computer graphics and interactive techniques
Computer graphics (2nd ed. in C): principles and practice
Computer graphics (2nd ed. in C): principles and practice
Proceedings of the 9th annual ACM symposium on User interface software and technology
Proceedings of the 26th annual conference on Computer graphics and interactive techniques
Observer dependent deformations in illustration
NPAR '00 Proceedings of the 1st international symposium on Non-photorealistic animation and rendering
A framework for unifying presentation space
Proceedings of the 14th annual ACM symposium on User interface software and technology
Non-photorealistic computer graphics: modeling, rendering, and animation
Non-photorealistic computer graphics: modeling, rendering, and animation
Non-Photorealistic Rendering
WYSIWYG NPR: drawing strokes directly on 3D models
Proceedings of the 29th annual conference on Computer graphics and interactive techniques
3D Illustrative Effects for Animating Line Drawings
IV '00 Proceedings of the International Conference on Information Visualisation
PG '03 Proceedings of the 11th Pacific Conference on Computer Graphics and Applications
Ryan: rendering your animation nonlinearly projected
Proceedings of the 3rd international symposium on Non-photorealistic animation and rendering
Computer Animation, Second Edition: Algorithms and Techniques
Computer Animation, Second Edition: Algorithms and Techniques
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NPR Lenses is an interactive technique for producing expressive non-photorealistic renderings. It provides an intuitive visual interaction tool for illustrators, allowing them to seamlessly apply a large variety of emphasis techniques. Advantages of 3D scene manipulation are combined with the capabilities of viewer-aligned lenses by inserting 2D lens controls into the 3D rendering pipeline. By using lenses that are spatially explicit and constrained we enable object-independent adjustments in 3D. Regions of emphasis can be easily created by adjusting lens parameters and any combination of line style, type, shape, and position of computer-generated lines. NPR Lenses support the creation of effects similar to those found in many existing hand-drawn illustrations and allow creative freedom through interactive control at the same time.