ABSTRACT
Human vision takes time to adapt to large changes in scene intensity, and these transient adjustments have a profound effect on visual appearance. This paper offers a new operator to include these appearance changes in animations or interactive real-time simulations, and to match a user's visual responses to those the user would experience in a real-world scene.
Large, abrupt changes in scene intensities can cause dramatic compression of visual responses, followed by a gradual recovery of normal vision. Asymmetric mechanisms govern these time-dependent adjustments, and offer adaptation to increased light that is much more rapid than adjustment to darkness. We derive a new tone reproduction operator that simulates these mechanisms. The operator accepts a stream of scene intensity frames and creates a stream of color display images.
All operator components are derived from published quantitative measurements from physiology, psychophysics, color science, and photography. ept intentionally simple to allow fast computation, the operator is meant for use with real-time walk-through renderings, high dynamic range video cameras, and other interactive applications. We demonstrate its performance on both synthetically generated and acquired “real-world” scenes with large dynamic variations of illumination and contrast.
Index Terms
- Time-dependent visual adaptation for fast realistic image display
Recommendations
Fast, Realistic Lighting for Video Games
Global lighting effects produced by diffuse interreflections are typically simulated using global illumination methods such as radiosity or ray tracing. Although diffuse interreflections are crucial to produce realistic images, radiosity like methods ...
Interactive Display of Isosurfaces with Global Illumination
In many applications, volumetric data sets are examined by displaying isosurfaces, surfaces where the data, or some function of the data, takes on a given value. Interactive applications typically use local lighting models to render such surfaces. This ...
A fast relighting engine for interactive cinematic lighting design
SIGGRAPH '00: Proceedings of the 27th annual conference on Computer graphics and interactive techniquesWe present new techniques for interactive cinematic lighting design of complex scenes that use procedural shaders. Deep-framebuffers are used to store the geometric and optical information of the visible surfaces of an image. The geometric information ...
Comments