A non-photorealistic lighting model for automatic technical illustration
Proceedings of the 25th annual conference on Computer graphics and interactive techniques
NPAR '02 Proceedings of the 2nd international symposium on Non-photorealistic animation and rendering
Models of light reflection for computer synthesized pictures
SIGGRAPH '77 Proceedings of the 4th annual conference on Computer graphics and interactive techniques
The lit sphere: a model for capturing NPR shading from art
GRIN'01 No description on Graphics interface 2001
Using Texture Synthesis for Non-Photorealistic Shading from Paint Samples
PG '03 Proceedings of the 11th Pacific Conference on Computer Graphics and Applications
IMPaSTo: a realistic, interactive model for paint
Proceedings of the 3rd international symposium on Non-photorealistic animation and rendering
ACM Transactions on Graphics (TOG)
Proceedings of the 4th international symposium on Non-photorealistic animation and rendering
Proceedings of the 4th international symposium on Non-photorealistic animation and rendering
Illustration of complex real-world objects using images with normals
Proceedings of the 5th international symposium on Non-photorealistic animation and rendering
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Real paintings are not truly flat but change subtly with variations in viewing direction. The pigments and painting layers also interact with the lighting environment, producing changes that range from subtle to quite dramatic. These effects are lacking in digital images. This paper describes a system that allows an artist to introduce, and control, a variety of lighting and viewing effects, such as specular reflection and refraction, through the use of additional images.