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
Advanced animation and rendering techniques
Advanced animation and rendering techniques
Pipeline rendering: interaction and realism through hardware-based multi-pass rendering
Pipeline rendering: interaction and realism through hardware-based multi-pass rendering
ACM Transactions on Computer-Human Interaction (TOCHI)
Shadow volume reconstruction from depth maps
ACM Transactions on Graphics (TOG)
OpenGL Programming Guide: The Official Guide to Learning OpenGL, Version 1.2
OpenGL Programming Guide: The Official Guide to Learning OpenGL, Version 1.2
Shadow algorithms for computer graphics
SIGGRAPH '77 Proceedings of the 4th annual conference on Computer graphics and interactive techniques
Approximate soft shadows on arbitrary surfaces using penumbra wedges
EGRW '02 Proceedings of the 13th Eurographics workshop on Rendering
Modeling the interaction of light between diffuse surfaces
SIGGRAPH '84 Proceedings of the 11th annual conference on Computer graphics and interactive techniques
The Cg Tutorial: The Definitive Guide to Programmable Real-Time Graphics
The Cg Tutorial: The Definitive Guide to Programmable Real-Time Graphics
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Authors who create interactive 3D-applications mostly suffer under the absences of an easy real-time shadow creation. Even new description languages like MPEG-4 do not support any shadow descriptions as yet. The general lack of existing shadow description possibilities was the inspiration of our research work. We present a novel approach, which enables a simple, flexible and universal solution for the shadow description and management with scene graph based applications. We introduce a new theory we call the "Theory of Shadow Relationships", where shadows are represented by relationships formed by several syntactical and semantical descriptions. The result is a basis for the shadow description itself and the shadow management. The visual rendering of shadows is independent of our solution. The results of our research are used for the development of a new MPEG-4 tool - the "Shadow Node". We show the use of the "Theory of Shadow Relationships" compliant to the MPEG-4 standard.