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Author Weiskopf, Daniel ♦ Hauser, Helwig
Source CiteSeerX
Content type Text
File Format PDF
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Cycle Shading ♦ Easy-to-control Pattern ♦ Higher-order Discontinuity ♦ Surface Quality ♦ Visualization Approach ♦ Isolated Part ♦ Shape Assessment ♦ Vector Field Visualization ♦ User Study ♦ Parameter Control ♦ New Local Shading Technique ♦ Natural Surface Highlight ♦ Hatched Cycle ♦ Efficient Gpu Implementation ♦ Phong Illumination ♦ Small Surface Variation ♦ Mesh Connectivity
Abstract In this paper we propose cycle shading and hatched cycle shading as new local shading techniques for shape assessment and visualization. Natural surface highlights are extended to not only appear in isolated parts of a surface, but to reappear throughout the surface in a regular and easy-to-control pattern. Thereby even small surface variations become visible, wherever they are located on the surface. We further extend (hatched) cycle shading to curves in 3D, i.e., to shapes of higher codimension. We demonstrate how (hatched) cycle shading improves 3D vector field visualization by showing higher-order discontinuities of streamlines, pathlines, or streaklines. Our visualization approach is generic, simple, efficient, and can readily be used where Phong illumination is applicable because information on curvature or mesh connectivity is not required. The effectiveness of cycle shading for the assessment of surface quality is demonstrated by a user study. Finally, this paper addresses issues of anti-aliasing, parameter control, applications, and efficient GPU implementations.
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study
Learning Resource Type Article