A Fast Rendering Method for Refractive and Reflective Caustics Due to Water Surfaces
A Fast Rendering Method for Refractive and Reflective Caustics Due to Water Surfaces
复制标题
水面折射和反射焦散的快速渲染方法
DOI：
10.1111/1467-8659.t01-2-00708
复制
发表时间：
2003
影响因子：
2.5
通讯作者：
T. Nishita
中科院分区：
文献类型：
--
作者：
Kei Iwasaki;Y. Dobashi;T. Nishita
为了合成包含水面的场景的逼真图像，需要对水面上的波浪所产生的焦散、反射等光学效果进行渲染。然而，使腐蚀相当复杂和耗时。近年来，图形硬件的性能有了显著的进步。这一事实促使研究人员对真实感图像合成的加速进行研究。本文提出了一种快速绘制水面折射焦散和反射焦散的方法。在该方法中，对象由一组纹理映射切片表示。我们使用切片计算物体上焦散的强度，并将强度存储为纹理。这使得使用图形硬件以交互速率呈现焦散量成为可能。此外，我们通过使用这些切片的反射/折射映射来渲染由于水面而反射和折射的物体。
In order to synthesize realistic images of scenes that include water surfaces, the rendering of optical effectscaused by waves on the water surface, such as caustics and reflection, is necessary. However, rendering causticsis quite complex and time‐consuming. In recent years, the performance of graphics hardware has made significantprogress. This fact encourages researchers to study the acceleration of realistic image synthesis. We present herea method for the fast rendering of refractive and reflective caustics due to water surfaces. In the proposed method,an object is expressed by a set of texture mapped slices. We calculate the intensities of the caustics on the objectby using the slices and store the intensities as textures. This makes it possible to render caustics at interactive rateby using graphics hardware. Moreover, we render objects that are reflected and refracted due to the water surfaceby using reflection/refraction mapping of these slices.