Comparing Hierarchical Data Structures for Sparse Volume Rendering with Empty Space Skipping

Efficient Space Skipping and Adaptive Sampling of Unstructured Volumes Using Hardware Accelerated Ray Tracing

Sample based ray marching is an effective method for direct volume rendering of unstructured meshes. However, sampling such meshes remains expensive, and strategies to reduce the number of samples taken have received relatively little attention. In this paper, we introduce a method for rendering unstructured meshes using a combination of a coarse spatial acceleration structure and hardware-accelerated ray tracing. Our approach enables efficient empty space skipping and adaptive sampling of unstructured meshes, and outperforms a reference ray marcher by up to 7x.

加速基于距离图的体绘制的传递函数更新

Accelerating Transfer Function Update for Distance Map based Volume Rendering

针对基于距离图的体绘制在传递函数变化时更新代价高的问题，提出分区距离图，将距离图计算加速最高 30 倍，从而支持频繁交互下的高帧率空区域跳过。

Hash-Based Ray Path Prediction: Skipping BVH Traversal Computation by Exploiting Ray Locality

State-of-the-art ray tracing techniques operate on hierarchical acceleration structures such as BVH trees which wrap objects in a scene into bounding volumes of decreasing sizes. Acceleration structures reduce the amount of ray-scene intersections that a ray has to perform to find the intersecting object. However, we observe a large amount of redundancy when rays are traversing these acceleration structures. While modern acceleration structures explore the spatial organization of the scene, they neglect similarities between rays that traverse the structures and thereby cause redundant traversa…

驻留八叉树：一种用于可扩展的基于Web的多体绘制的混合方法

Residency Octree: A Hybrid Approach for Scalable Web-Based Multi-Volume Rendering

本研究提出基于新型驻留八叉树的混合多体绘制方法，解耦缓存驻留与空间细分，兼具八叉树与页表优势，还实现了基于WebGPU和WebAssembly的纯客户端Web渲染器，性能优于现有方法。

Ray Tracing Structured AMR Data Using ExaBricks

Structured Adaptive Mesh Refinement (Structured AMR) enables simulations to adapt the domain resolution to save computation and storage, and has become one of the dominant data representations used by scientific simulations; however, efficiently rendering such data remains a challenge. We present an efficient approach for volume- and iso-surface ray tracing of Structured AMR data on GPU-equipped workstations, using a combination of two different data structures. Together, these data structures allow a ray tracing based renderer to quickly determine which segments along the ray need to be integ…

体积表面：用分层网格表示模糊几何体

Volumetric Surfaces: Representing Fuzzy Geometries with Layered Meshes

本文提出一种基于半透明多层网格的新表示方法，通过SDF壳层和固定顺序渲染，实现模糊几何体的实时高质量视图合成，支持低功耗设备。