A montage method: the overlaying of the computer generated images onto a background photograph
SIGGRAPH '86 Proceedings of the 13th annual conference on Computer graphics and interactive techniques
Shading models for point and linear sources
ACM Transactions on Graphics (TOG)
SIGGRAPH '85 Proceedings of the 12th annual conference on Computer graphics and interactive techniques
The hemi-cube: a radiosity solution for complex environments
SIGGRAPH '85 Proceedings of the 12th annual conference on Computer graphics and interactive techniques
SIGGRAPH '85 Proceedings of the 12th annual conference on Computer graphics and interactive techniques
A Reflectance Model for Computer Graphics
ACM Transactions on Graphics (TOG)
Computer rendering of stochastic models
Communications of the ACM
Texture and reflection in computer generated images
Communications of the ACM
Simulation of natural scenes using textured quadric surfaces
SIGGRAPH '84 Proceedings of the 11th annual conference on Computer graphics and interactive techniques
Modeling the interaction of light between diffuse surfaces
SIGGRAPH '84 Proceedings of the 11th annual conference on Computer graphics and interactive techniques
SIGGRAPH '84 Proceedings of the 11th annual conference on Computer graphics and interactive techniques
Extending the radiosity method to include specularly reflecting and translucent materials
ACM Transactions on Graphics (TOG)
Accurate rendering technique based on colorimetric conception
SIGGRAPH '90 Proceedings of the 17th annual conference on Computer graphics and interactive techniques
A lighting model aiming at drive simulators
SIGGRAPH '90 Proceedings of the 17th 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
Frequency domain volume rendering
SIGGRAPH '93 Proceedings of the 20th annual conference on Computer graphics and interactive techniques
Method of displaying optical effects within water using accumulation buffer
SIGGRAPH '94 Proceedings of the 21st annual conference on Computer graphics and interactive techniques
ACM Transactions on Graphics (TOG)
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
Recovering photometric properties of architectural scenes from photographs
Proceedings of the 25th annual conference on Computer graphics and interactive techniques
A physically-based night sky model
Proceedings of the 28th annual conference on Computer graphics and interactive techniques
Approximate shading for the re-illumination of synthetic images
Proceedings of the conference on Visualization '01
Compositing 3D Images with Antialiasing and Various Shading Effects
IEEE Computer Graphics and Applications
IEEE Computer Graphics and Applications
MPEG-4 based real-time shadows
Proceedings of the 12th annual ACM international conference on Multimedia
Direct HDR capture of the sun and sky
AFRIGRAPH '04 Proceedings of the 3rd international conference on Computer graphics, virtual reality, visualisation and interaction in Africa
Direct HDR capture of the sun and sky
ACM SIGGRAPH 2006 Courses
Real-time rendering of daylight sky scene for virtual environment
ICEC'07 Proceedings of the 6th international conference on Entertainment Computing
Hi-index | 0.00 |
Natural lighting models to date have been limited to calculation of direct sunlight. However, this paper proposes an improved model for natural lighting calculations that adequately considers both direct sunlight and scattered light caused by clouds and other forms of water vapor in the air. Such indirect natural light is termed skylight and can be an important factor when attempting to render realistic looking images as they might appear under overcast skies.In the proposed natural lighting model, the sky is considered to be a hemisphere with a large radius (called the sky dome) that acts as a source of diffuse light with nonuniform intensity. In order to adequately take into account the nonuniform intensity of such skylight, the sky dome is subdivided into bands. The light intensity within individual bands can be assumed to be transversely uniform and longitudinally nonuniform and therefore the total luminance emanating from each band can be calculated more accurately.The proposed method significantly improves the realism of natural lighting effects. Its advantages are particularly apparent when simulating lighting under an overcast sky or when rendering surfaces that fall within a shadow cast by an obstruction lit by direct sunlight.