A Voxel-based Rendering Pipeline for Large 3D Line Sets

by   Mathias Kanzler, et al.

We present a voxel-based rendering pipeline for large 3D line sets that employs GPU ray-casting to achieve scalable rendering including transparency and global illumination effects that cannot be achieved with GPU rasterization. Even for opaque lines we demonstrate superior rendering performance compared to GPU rasterization of lines, and when transparency is used we can interactively render large amounts of lines that are infeasible to be rendered via rasterization. To achieve this, we propose a direction-preserving encoding of lines into a regular voxel grid, along with the quantization of directions using face-to-face connectivity in this grid. On the regular grid structure, parallel GPU ray-casting is used to determine visible fragments in correct visibility order. To enable interactive rendering of global illumination effects like low-frequency shadows and ambient occlusions, illumination simulation is performed during ray-casting on a level-of-detail (LoD) line representation that considers the number of lines and their lengths per voxel. In this way we can render effects which are very difficult to render via GPU rasterization. A detailed performance and quality evaluation compares our approach to rasterization-based rendering of lines.



page 4

page 5

page 7

page 8

page 9

page 12

page 13

page 14


A Comparison of Rendering Techniques for Large 3D Line Sets with Transparency

This paper presents a comprehensive study of interactive rendering techn...

Interactive Focus+Context Rendering for Hexahedral Mesh Inspection

The visual inspection of a hexahedral mesh with respect to element quali...

Interactive volume illumination of slice-based ray casting

Volume rendering always plays an important role in the field of medical ...

Real-Time Global Illumination Using OpenGL And Voxel Cone Tracing

Building systems capable of replicating global illumination models with ...

LOCALIS: Locally-adaptive Line Simplification for GPU-based Geographic Vector Data Visualization

Vector data is abundant in many fields such as geography and cartography...

3D-TSV: The 3D Trajectory-based Stress Visualizer

We present the 3D Trajectory-based Stress Visualizer (3D-TSV), a visual ...

Slope-Dependent Rendering of Parallel Coordinates to Reduce Density Distortion and Ghost Clusters

Parallel coordinates are a popular technique to visualize multi-dimensio...
This week in AI

Get the week's most popular data science and artificial intelligence research sent straight to your inbox every Saturday.