Improved Computational Methods for Ray Tracing
ACM Transactions on Graphics (TOG)
An improved illumination model for shaded display
Communications of the ACM
Illumination for computer generated pictures
Communications of the ACM
Realistic image synthesis using photon mapping
Realistic image synthesis using photon mapping
Modeling the interaction of light between diffuse surfaces
SIGGRAPH '84 Proceedings of the 11th annual conference on Computer graphics and interactive techniques
Photon mapping on programmable graphics hardware
Proceedings of the ACM SIGGRAPH/EUROGRAPHICS conference on Graphics hardware
Physically Based Rendering: From Theory to Implementation
Physically Based Rendering: From Theory to Implementation
Lpics: a hybrid hardware-accelerated relighting engine for computer cinematography
ACM SIGGRAPH 2005 Papers
Packet-based whitted and distribution ray tracing
GI '07 Proceedings of Graphics Interface 2007
An efficient GPU-based approach for interactive global illumination
ACM SIGGRAPH 2009 papers
Hardware-accelerated global illumination by image space photon mapping
Proceedings of the Conference on High Performance Graphics 2009
Stochastic progressive photon mapping
ACM SIGGRAPH Asia 2009 papers
Yet Faster Ray-Triangle Intersection (Using SSE4)
IEEE Transactions on Visualization and Computer Graphics
An irradiance atlas for global illumination in complex production scenes
EGSR'04 Proceedings of the Fifteenth Eurographics conference on Rendering Techniques
Instant ray tracing: the bounding interval hierarchy
EGSR'06 Proceedings of the 17th Eurographics conference on Rendering Techniques
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In this work we present an improved rendering algorithm for the planning of stage lighting using photon mapping, since existing software implements algorithms that do not suit the lighting workflow in a theatre adequately. During theatre lighting, positional changes of light sources are occuring rarely compared to intensity and color changes: Once a light is positioned and aimed correctly, many intensity and color values are tested. Thus, intensity and color changes must be recomputed very fast whereas positional changes may take longer to be rendered. The algorithm we present provides such fast recalculations and furthermore balances idle times of user and renderer. In our algorithm image synthesis is split into a rendering and a real-time updating process. Additionally the wellknown concept of splitting the photon map into a global and a caustic map is consequently refined to light-specific photon maps and intensity buffers. The presented prototypic system utilizes general purpose API to get further insight into and proof of the concepts. Results indicate that the proposed algorithm can efficiently be used to plan and simulate stage lighting in a theatre.