基于切片的光线投射的交互式体照明
Interactive volume illumination of slice-based ray casting
摘要：
体渲染在医学成像和工业设计领域一直扮演着重要的角色。近年来，基于全局光照的真实感交互式体渲染可以提高体数据集的形状和深度感知能力。本文提出了一种新的基于切片的光线投射方法，用于实现体照明效果，如体阴影和其他散射效果。这得益于光源视角下整个几何切片的基于切片的照明衰减缓冲区以及光线投射中每个样本的高效阴影或散射系数计算。实验表明，与光线投射体渲染中的局部体照明或其他类似的基于切片的全局体照明相比，该方法可以获得更好的体照明效果和更高的可扩展性。
英文摘要：
Volume rendering always plays an important role in the field of medical imaging and industrial design. In recent years, the realistic and interactive volume rendering of the global illumination can improve the perception of shape and depth of volumetric datasets. In this paper, a novel and flexible performance method of slice-based ray casting is proposed to implement the volume illumination effects, such as volume shadow and other scattering effects. This benefits from the slice-based illumination attenuation buffers of the whole geometry slices at the viewpoint of the light source and the high-efficiency shadow or scattering coefficient calculation per sample in ray casting. These tests show the method can obtain much better volume illumination effects and more scalable performance in contrast to the local volume illumination in ray casting volume rendering or other similar slice-based global volume illumination.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
