Probabilistic Visibility Evaluation for Direct Illumination
نویسندگان
چکیده
منابع مشابه
Probabilistic Visibility Evaluation for Direct Illumination
The efficient evaluation of visibility in a three-dimensional scene is a longstanding problem in computer graphics. Visibility evaluations come in many different forms: figuring out what object is visible in a pixel; determining whether a point is visible to a light source; or evaluating the mutual visibility between 2 surface points. This paper provides a new, experimental view on visibility, ...
متن کاملProbabilistic visibility evaluation using geometry proxies
Evaluating the visibility between two points is a fundamental problem for ray-tracing and path-tracing algorithms. Ideally, visibility computations are organized such that a minimum number of geometric primitives need to be checked for each ray. Replacing complex geometric shapes by a simpler set of primitives is one strategy to control the amount of intersection calculations. However, approxim...
متن کاملProgressive Visibility Caching for Fast Indirect Illumination
Rendering realistic images requires exploring the vast space of all possible paths that light can take between emitters and receivers. Thanks to the advances in rendering we can tackle this problem using different algorithms; but in general, we will likely be evaluating many expensive visibility queries. In this paper, we leverage the observation that certain kinds of visibility calculations do...
متن کاملVisibility based probabilistic roadmaps
This paper presents a variant of probabilistic roadmap algorithms that recently appeared as a promising approach to motion planning. We exploit a free-space structuring of the connguration space into visibility domains in order to produce small roadmaps. The algorithm has been implemented within a software platform allowing to address a large class of mechanical systems. Experiments show the ee...
متن کاملModeling Peripheral Visibility under Headlamp Illumination
Undoubtedly, the detection of peripheral objects and pedestrians while driving is an important visual task. However, there are few data that describe the impact of parameters such as headlamp illumination, peripheral angle and target reflectance upon the speed and accuracy with which one can detect peripheral targets. The present paper outlines a framework for the development of a model that pr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Computer Graphics Forum
سال: 2013
ISSN: 0167-7055
DOI: 10.1111/cgf.12149