SIGGRAPH '86 Proceedings of the 13th annual conference on Computer graphics and interactive techniques
Efficient algorithms for local and global accessibility shading
SIGGRAPH '94 Proceedings of the 21st annual conference on Computer graphics and interactive techniques
Proceedings of the 25th annual conference on Computer graphics and interactive techniques
Interactive technical illustration
I3D '99 Proceedings of the 1999 symposium on Interactive 3D graphics
A microfacet-based BRDF generator
Proceedings of the 27th annual conference on Computer graphics and interactive techniques
Proceedings of the 27th annual conference on Computer graphics and interactive techniques
Digital Image Processing
Suggestive contours for conveying shape
ACM SIGGRAPH 2003 Papers
Interactive rendering of suggestive contours with temporal coherence
Proceedings of the 3rd international symposium on Non-photorealistic animation and rendering
GI '04 Proceedings of the 2004 Graphics Interface Conference
Ridge-valley lines on meshes via implicit surface fitting
ACM SIGGRAPH 2004 Papers
Estimating Curvatures and Their Derivatives on Triangle Meshes
3DPVT '04 Proceedings of the 3D Data Processing, Visualization, and Transmission, 2nd International Symposium
Curvature-Based Transfer Functions for Direct Volume Rendering: Methods and Applications
Proceedings of the 14th IEEE Visualization 2003 (VIS'03)
IEEE Transactions on Visualization and Computer Graphics
A first-order analysis of lighting, shading, and shadows
ACM Transactions on Graphics (TOG)
Isophote distance: a shading approach to artistic stroke thickness
Proceedings of the 5th international symposium on Non-photorealistic animation and rendering
Highlight lines for conveying shape
Proceedings of the 5th international symposium on Non-photorealistic animation and rendering
Line drawings via abstracted shading
ACM SIGGRAPH 2007 papers
Apparent ridges for line drawing
ACM SIGGRAPH 2007 papers
3D unsharp masking for scene coherent enhancement
ACM SIGGRAPH 2008 papers
Discrete laplace operator on meshed surfaces
Proceedings of the twenty-fourth annual symposium on Computational geometry
Apparent relief: a shape descriptor for stylized shading
NPAR '08 Proceedings of the 6th international symposium on Non-photorealistic animation and rendering
Demarcating curves for shape illustration
ACM SIGGRAPH Asia 2008 papers
Laplacian lines for real-time shape illustration
Proceedings of the 2009 symposium on Interactive 3D graphics and games
Light warping for enhanced surface depiction
ACM SIGGRAPH 2009 papers
Radiance Scaling for versatile surface enhancement
Proceedings of the 2010 ACM SIGGRAPH symposium on Interactive 3D Graphics and Games
Perceptually-motivated shape exaggeration
The Visual Computer: International Journal of Computer Graphics
Improving Shape Depiction under Arbitrary Rendering
IEEE Transactions on Visualization and Computer Graphics
Surface flows for image-based shading design
ACM Transactions on Graphics (TOG) - SIGGRAPH 2012 Conference Proceedings
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Enhancement can exaggerate visual details in both image processing and 3D rendering. In this paper, we adapt the gradient enhancement technique from image processing to 3D rendering through differentiating the rendering result with respect to the image space coordinates under point lighting. In this way, we can achieve 3D enhancement taking into account the gradient of geometry, projection transform, visibility and highlight. We also propose a tunable shape descriptor for users to achieve rendering results in different enhancement extent. Moreover, we extend this method to the environment lighting with some simplifications. Finally, we demonstrate that our method can handle the grazing angle area and the edges of sharp slope better than the previous method due to the gradient of the projection transform.