A signal processing approach to fair surface design
SIGGRAPH '95 Proceedings of the 22nd annual conference on Computer graphics and interactive techniques
Interactive rendering of suggestive contours with temporal coherence
Proceedings of the 3rd international symposium on Non-photorealistic animation and rendering
Comparative Study of Unsharp Masking Methods for Image Enhancement
ICIG '04 Proceedings of the Third International Conference on Image and Graphics
Exaggerated shading for depicting shape and detail
ACM SIGGRAPH 2006 Papers
Image enhancement by unsharp masking the depth buffer
ACM SIGGRAPH 2006 Papers
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ACM SIGGRAPH 2006 Courses
Ambient Occlusion and Edge Cueing for Enhancing Real Time Molecular Visualization
IEEE Transactions on Visualization and Computer Graphics
Proceedings of the 5th international symposium on Non-photorealistic animation and rendering
Enhancing Depth-Perception with Flexible Volumetric Halos
IEEE Transactions on Visualization and Computer Graphics
High Dynamic Range Imaging: Acquisition, Display, and Image-Based Lighting (The Morgan Kaufmann Series in Computer Graphics)
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
Dynamic shading enhancement for reflectance transformation imaging
Journal on Computing and Cultural Heritage (JOCCH)
Multidimensional image retargeting
SIGGRAPH Asia 2011 Courses
Unsharp Masking, Countershading and Halos: Enhancements or Artifacts?
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Interactive volume illustration using intensity filtering
Computational Aesthetics'10 Proceedings of the Sixth international conference on Computational Aesthetics in Graphics, Visualization and Imaging
Color enhancement for rapid prototyping
VAST'08 Proceedings of the 9th International conference on Virtual Reality, Archaeology and Cultural Heritage
Computer Assisted Relief Generation—A Survey
Computer Graphics Forum
Image recoloring using linear template mapping
Multimedia Tools and Applications
The Visual Computer: International Journal of Computer Graphics
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We present a new approach for enhancing local scene contrast by unsharp masking over arbitrary surfaces under any form of illumination. Our adaptation of a well-known 2D technique to 3D interactive scenarios is designed to aid viewers in tasks like understanding complex or detailed geometric models, medical visualization and navigation in virtual environments. Our holistic approach enhances the depiction of various visual cues, including gradients from surface shading, surface reflectance, shadows, and highlights, to ease estimation of viewpoint, lighting conditions, shapes of objects and their world-space organization. Motivated by recent perceptual findings on 3D aspects of the Cornsweet illusion, we create scene coherent enhancements by treating cues in terms of their 3D context; doing so has a stronger effect than approaches that operate in a 2D image context and also achieves temporal coherence. We validate our unsharp masking in 3D with psychophysical experiments showing that the enhanced images are perceived to have better contrast and are preferred over unenhanced originals. Our operator runs at real-time rates on a GPU and the effect is easily controlled interactively within the rendering pipeline.