Exploiting Partial Visibility for Optimised Crowd Scene Rendering
نویسنده
چکیده
This paper presents a new approach to optimising the rendering of large crowded scenes for use in virtual environment walk-through applications. We combine an existing impostor rendering technique with new approximated visibility techniques to display scenes populated with large numbers of virtual humans.
منابع مشابه
Efficient From-Point Visibility for Global Illumination in Virtual Scenes with Participating Media
Visibility determination is one of the fundamental building blocks of photorealistic image synthesis. Light reflected at a shading point depends on light reflected from the visible scene surfaces and on the visible light sources in the environment. However, computing visibility is computational highly demanding and global illumination algorithms, such as final gathering and bias compensation fo...
متن کاملHierarchical Techniques for Visibility Computations
Visibility computation is crucial for computer graphics from its very beginning. The first visibility algorithms aimed to determine visible lines or surfaces in a synthesized image of a 3D scene. Nowadays there is a plethora of visibility algorithms for various applications. The thesis proposes a taxonomy of visibility problems based on the dimension of the problem-relevant line set, i.e. set o...
متن کاملImportance Caching for Complex Illumination
Realistic rendering requires computing the global illumination in the scene, and Monte Carlo integration is the best-known method for doing that. The key to good performance is to carefully select the costly integration samples, which is usually achieved via importance sampling. Unfortunately, visibility is difficult to factor into the importance distribution, which can greatly increase varianc...
متن کاملDesign of a flexible visibility library
The whole process of realtime-rendering is usually structured into several parts, like rendering scenegraph, visibility processing and interaction device handling. Ideally each parts function-ality should be offered in an efficient and reusable C++-library. For the visibility processing we discuss requirements and design options for the library. The discussion is based on the OpenSG scenegraph ...
متن کاملAggressive Visibility for Rendering Extremely Complex Foliage Scenes
This paper introduces a method to accelerate the rendering of extremely complex scenes by representing large portions of the scene with simplified representations. The method uses aggressive visibility to tag large and mostly occluded portions of the scene as background. The background scene is rendered by low cost imposters. The method masks any parallax errors that might be introduced by the ...
متن کامل