Proc ACM Comput Graph Interact Tech

Stereo-consistent screen-space ambient occlusion

Peiteng Shi, Markus Billeter, and Elmar Eisemann

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Screen-space ambient occlusion (SSAO) shows high efficiency and is widely used in real-time 3D applications. However, using SSAO algorithms in stereo rendering can lead to inconsistencies due to the differences in the screen-space information captured by the left and right eye. This will affect the perception of the scene and may be a source of viewer discomfort. In this paper, we show that the raw obscurance estimation part and subsequent filtering are both sources of inconsistencies. We developed a screen-space method involving both views in conjunction, leading to a stereo-aware raw obscurance estimation method and a stereo-aware bilateral filter. The results show that our method reduces stereo inconsistencies to a level comparable to geometry-based AO solutions, while maintaining the performance benefits of a screen-space approach. Please download the video file and watch it using VLC player.

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@article{bib:shi:2022,
    author       = { Shi, Peiteng and Billeter, Markus and Eisemann, Elmar },    
    title        = { Stereo-consistent screen-space ambient occlusion },
    journal      = { Proc ACM Comput Graph Interact Tech },
    volume       = { 5 },
    year         = { 2022 },
    pages        = { 2:1--2:12 },
    doi          = { 10.1145/3522614 },
    pubmedid     = { 26505203 },
    dblp         = { journals/pacmcgit/ShiBE22 },
    url          = { https://publications.graphics.tudelft.nl/papers/51 },
}