An improved illumination model for shaded display
Communications of the ACM
Illumination for computer generated pictures
Communications of the ACM
Shadow algorithms for computer graphics
SIGGRAPH '77 Proceedings of the 4th annual conference on Computer graphics and interactive techniques
Lighting controls for synthetic images
SIGGRAPH '83 Proceedings of the 10th annual conference on Computer graphics and interactive techniques
The notion of quantitative invisibility and the machine rendering of solids
ACM '67 Proceedings of the 1967 22nd national conference
Casting curved shadows on curved surfaces
SIGGRAPH '78 Proceedings of the 5th annual conference on Computer graphics and interactive techniques
SIGGRAPH '78 Proceedings of the 5th annual conference on Computer graphics and interactive techniques
Atmospheric illumination and shadows
SIGGRAPH '86 Proceedings of the 13th annual conference on Computer graphics and interactive techniques
Continuous tone representation of three-dimensional objects illuminated by sky light
SIGGRAPH '86 Proceedings of the 13th annual conference on Computer graphics and interactive techniques
Rendering antialiased shadows with depth maps
SIGGRAPH '87 Proceedings of the 14th annual conference on Computer graphics and interactive techniques
SIGGRAPH '87 Proceedings of the 14th annual conference on Computer graphics and interactive techniques
Near real-time shadow generation using BSP trees
SIGGRAPH '89 Proceedings of the 16th annual conference on Computer graphics and interactive techniques
Three dimensional Terrain modeling and display for environmental assessment
SIGGRAPH '89 Proceedings of the 16th annual conference on Computer graphics and interactive techniques
Rendering fur with three dimensional textures
SIGGRAPH '89 Proceedings of the 16th annual conference on Computer graphics and interactive techniques
Adaptive mesh generation for global diffuse illumination
SIGGRAPH '90 Proceedings of the 17th annual conference on Computer graphics and interactive techniques
Design and simulation of opera lighting and projection effects
Proceedings of the 18th annual conference on Computer graphics and interactive techniques
SIGGRAPH '85 Proceedings of the 12th annual conference on Computer graphics and interactive techniques
ACM Transactions on Graphics (TOG)
Compositing 3D Images with Antialiasing and Various Shading Effects
IEEE Computer Graphics and Applications
IEEE Computer Graphics and Applications
Linear light source reflectometry
ACM SIGGRAPH 2003 Papers
Shadow penumbras for complex objects by depth-dependent filtering of multi-layer depth images
EGWR'99 Proceedings of the 10th Eurographics conference on Rendering
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The degree of realism of the shaded image of a tree-dimensional scene depends on the successful simulation of shading effects. The shading model has two main ingredients, properties of the surface and properties of the illumination falling on it. Most previous work has concentrated on the former rather than the latter.This paper presents an improved version for generating scenes illuminated by point and linear light sources. The procedure can include intensity distributions for point light sources and output both umbrae and penumbrae for linear light sources, assuming thr environment is composed of convex polyhedra. This paper generalizes Crow's procedure for computing shadow volumes caused by the end points of the linear source results in an easy determination of the reions of penumbrae and umbrae on the face prior to shading calculation.This paper also discusses a method for displaying illuminance distribution on a shaded image aby using colored isolux contours.