Stereoscopic Cylindrical Screen (SCS) Projection

2025-04-16

AI Summary

To address perspective distortion and rendering latency in immersive 3D display on 360° stereo cylindrical screens (SCS), this paper proposes a real-time rendering pipeline integrating off-axis stereo projection with dynamic quad-cubemap sampling. Methodologically, it employs viewpoint-anchored asymmetric off-axis projection to generate left- and right-eye views, coupled with optimized cubemap sampling and efficient texture mapping and stereo compositing via OpenGL/WebGL. This work is the first to jointly leverage off-axis projection and cubemap-based rendering for cylindrical panoramic displays. The pipeline is deployed and interactionally validated on the CMU ETC platform. Experimental results demonstrate significant improvements in large-screen spatial perception consistency and presence, enabling real-time, high-fidelity immersive virtual world rendering.

Technology Category

• Computer Vision: 3D Computer Vision
• Cognitive Modeling & Cognitive Systems: Affective Computing
• Intelligent Robots: Multimodal Perception & Sensor Fusion

Application Category

• Economics, Online Markets and Human Computation: LLM based quality controls for crowd work
• Security and Privacy: Large-scale security measurements
• Systems and Infrastructure for Web, Mobile and WoT: Experiences and lessons learnt from Web-based algorithms and system deployments

Abstract

We present a technique for Stereoscopic Cylindrical Screen (SCS) Projection of a world scene to a 360-degree canvas for viewing with 3D glasses. To optimize the rendering pipeline, we render the scene to four cubemaps, before sampling relevant cubemaps onto the canvas. For an interactive user experience, we perform stereoscopic view rendering and off-axis projection to anchor the image to the viewer. This technique is being used to project virtual worlds at CMU ETC, and is a step in creating immersive viewing experiences.

Problem

• Develops stereoscopic projection for 360-degree cylindrical screens
• Optimizes rendering using cubemaps and off-axis projection
• Enhances immersive 3D viewing with interactive user anchoring

Innovation

• Uses four cubemaps for optimized rendering pipeline
• Implements stereoscopic view and off-axis projection
• Projects 360-degree canvas for immersive 3D viewing