Badminton is a fast-paced sport that requires a strategic combination of spatial, temporal, and technical tactics. To gain a competitive edge at high-level competitions, badminton professionals frequently analyze match videos to gain insights and develop game strategies. However, the current process for analyzing matches is time-consuming and relies heavily on manual note-taking, due to the lack of automatic data collection and appropriate visualization tools. As a result, there is a gap in effectively analyzing matches and communicating insights among badminton coaches and players. This work proposes an end-to-end immersive match analysis pipeline designed in close collaboration with badminton professionals, including Olympic and national coaches and players. We present VIRD, a VR Bird (i.e., shuttle) immersive analysis tool, that supports interactive badminton game analysis in an immersive environment based on 3D reconstructed game views of the match video. We propose a top-down analytic workflow that allows users to seamlessly move from a high-level match overview to a detailed game view of individual rallies and shots, using situated 3D visualizations and video. We collect 3D spatial and dynamic shot data and player poses with computer vision models and visualize them in VR. Through immersive visualizations, coaches can interactively analyze situated spatial data (player positions, poses, and shot trajectories) with flexible viewpoints while navigating between shots and rallies effectively with embodied interaction. We evaluated the usefulness of VIRD with Olympic and national-level coaches and players in real matches. Results show that immersive analytics supports effective badminton match analysis with reduced context-switching costs and enhances spatial understanding with a high sense of presence.

翻译：羽毛球是一项快节奏运动，需要空间、时间和技战术策略的有机结合。为在高水平竞赛中获得竞争优势，羽毛球专业人士经常分析比赛视频以获取洞见并制定比赛策略。然而，由于缺乏自动数据采集和适当的可视化工具，当前比赛分析过程耗时且严重依赖人工笔记。这导致教练和运动员之间在有效分析比赛和沟通见解方面存在差距。本研究提出了一种与羽毛球专业人士（包括奥运及国家队教练和运动员）紧密合作设计的端到端沉浸式比赛分析流水线。我们提出VIRD——一款VR羽毛球（即羽球）沉浸式分析工具，该工具基于比赛视频的3D重建视角，在沉浸式环境中支持交互式羽毛球比赛分析。我们提出了一种自上而下的分析工作流，允许用户利用情境化3D可视化与视频，从比赛全局概览无缝过渡到单个回合和击球的详细比赛视角。我们采用计算机视觉模型收集3D空间及动态击球数据与运动员姿态，并在VR中可视化。通过沉浸式可视化，教练可借助灵活视点交互式分析情境化空间数据（运动员位置、姿态和击球轨迹），同时通过具身交互在击球和回合间高效导航。我们联合奥运及国家队教练与运动员在实际比赛中评估了VIRD的有效性。结果表明，沉浸式分析支持有效的羽毛球比赛分析，降低了上下文切换成本，并通过高临场感增强了空间理解。