Iterative Depth Warping

Author:

Lee Sungkil1ORCID,Kim Younguk1,Eisemann Elmar2

Affiliation:

1. Sungkyunkwan University, Suwon, South Korea

2. Delft University of Technology, Delft, Netherlands

Abstract

This article presents an iterative backward-warping technique and its applications. It predictively synthesizes depth buffers for novel views. Our solution is based on a fixed-point iteration that converges quickly in practice. Unlike the previous techniques, our solution is a pure backward warping without using bidirectional sources. To efficiently seed the iterative process, we also propose a tight bounding method for motion vectors. Non-convergent depth holes are inpainted via deep depth buffers. Our solution works well with arbitrarily distributed motion vectors under moderate motions. Many scenarios can benefit from our depth warping. As an application, we propose a highly scalable image-based occlusion-culling technique, achieving a significant speed-up compared to the state of the art. We also demonstrate the benefit of our solution in multi-view soft-shadow generation.

Funder

Mid-Career Program, National Research Foundation of Korea

Global Frontier Program, National Research Foundation of Korea

NWO Vernieuwingsimpuls

Publisher

Association for Computing Machinery (ACM)

Subject

Computer Graphics and Computer-Aided Design

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1. Mob-FGSR: Frame Generation and Super Resolution for Mobile Real-Time Rendering;Special Interest Group on Computer Graphics and Interactive Techniques Conference Conference Papers '24;2024-07-13

2. Real-Time Motion Blur Using Multi-Layer Motion Vectors;Applied Sciences;2024-05-28

3. CollabVr: Reprojection-Based Edge-Client Collaborative Rendering for Real-Time High-Quality Mobile Virtual Reality;2023 IEEE Real-Time Systems Symposium (RTSS);2023-12-05

4. A GPU-friendly hybrid occlusion culling algorithm for large scenes;Displays;2023-12

5. Potentially Visible Hidden-Volume Rendering for Multi-View Warping;ACM Transactions on Graphics;2023-07-26

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