Title: GPU Volume Rendering with Hierarchical Compression Using VDB Show Chinese title

Title: 使用VDB的分层压缩GPU体积渲染

Abstract: We propose a compression-based approach to GPU rendering of large volumetric data using OpenVDB and NanoVDB. We use OpenVDB to create a lossy, fixed-rate compressed representation of the volume on the host, and use NanoVDB to perform fast, low-overhead, and on-the-fly decompression during rendering. We show that this approach is fast, works well even in a (incoherent) Monte Carlo path tracing context, can significantly reduce the memory requirements of volume rendering, and can be used as an almost drop-in replacement into existing 3D texture-based renderers. Show Chinese abstract

Abstract: 我们提出了一种基于压缩的方法，用于使用 OpenVDB 和 NanoVDB 对大规模体数据进行 GPU 渲染。我们在主机上使用 OpenVDB 创建体积的有损固定速率压缩表示，并在渲染过程中使用 NanoVDB 进行快速、低开销且实时的解压缩。我们证明这种方法速度快，即使在（非相干）蒙特卡洛路径追踪上下文中也能很好地工作，能够显著减少体积渲染的内存需求，并可用作几乎可以直接替换到现有基于 3D 纹理的渲染器中的替代方案。