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
Display of the earth taking into account atmospheric scattering
SIGGRAPH '93 Proceedings of the 20th annual conference on Computer graphics and interactive techniques
Display of clouds taking into account multiple anisotropic scattering and sky light
SIGGRAPH '96 Proceedings of the 23rd annual conference on Computer graphics and interactive techniques
A simple, efficient method for realistic animation of clouds
Proceedings of the 27th annual conference on Computer graphics and interactive techniques
Interactive Rendering Method for Displaying Shafts of Light
PG '00 Proceedings of the 8th Pacific Conference on Computer Graphics and Applications
A practical analytic single scattering model for real time rendering
ACM SIGGRAPH 2005 Papers
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Realistic rendering of sky scene is important in virtual environment. Traditional methods are mostly based on skybox, thus failing to realistically simulate the change of sky scene under different weathers and conditions. In this paper, a new sky light model under different weathers for virtual environment is proposed. We first analyze the atmosphere characters of sky scene, and calculate the light path and light intensity into eyes through the atmosphere considering atmospheric scattering and refraction. Then for different weathers, by adapting a path tracing algorithm, the intensity distribution of sky light is gained. we also adopt the scattered volume model and GPU techniques to accelerate the calculation. Finally, various sky scenes in sunny day, foggy day, raining day and that with rainbow under different conditions are realistically rendered in real time.