我们推出 Ego-OSCAR,这是一款开源硬件、低成本的头戴式立体惯性采集设备,用于在真实环境中采集第一人称视角(egocentric)数据。Ego-OSCAR 将硬件同步的全局快门立体相机与 6 轴 IMU、用于设备端视频编码的嵌入式 Linux 单板计算机(SBC),以及用于用户反馈和看门狗功能的实时微控制器相结合。整套物料清单(BOM)成本低于每台 200 美元,仅使用市售组件和 3D 打印部件。除设备本身外,我们还发布了完整的软件栈(硬件加速录制流水线、IMU 采样守护进程、时间同步工具和看门狗固件),以及由分布式贡献者网络在日常室内环境中采集的、每台相机约 550 小时、带同步 IMU 的第一人称视角立体视频。该数据集发布的是带标注而非原始数据:自由形式的动作描述以开放词汇覆盖了几乎全部录制时间线,并且每帧 3D 手部重建与每次会话的立体标定数据一并提供。Ego-OSCAR 的目标并非在单台设备保真度上对标 Project Aria 等研究级系统;它的目标是成为众包第一人称视角采集最廉价且可靠的底层平台,并降低任何团队大规模采集第一人称视角数据的启动门槛。所有硬件设计、软件和数据集均已开源。
We present Ego-OSCAR, an open-hardware, low-cost, head-mounted stereo-inertial capture device for egocentric data collection in the wild. EgoOSCAR pairs a hardware-synchronized global-shutter stereo camera with a 6- axis IMU, an embedded Linux SBC for on-device video encoding, and a realtime microcontroller for user feedback and watchdog functions. The complete bill of materials is under USD 200 per unit, using only commercially available components and 3D-printed parts. Alongside the device, we release a complete software stack (hardware-accelerated recording pipeline, IMU sampling daemon, time-synchronization tooling, and watchdog firmware) and roughly 550 hours of egocentric stereo video per camera with synchronized IMU, collected by a distributed contributor network across everyday indoor environments. The release is annotated rather than raw: free-form action captions cover essentially the entire recorded timeline with an open vocabulary, and per-frame 3D hand reconstructions ship alongside per-session stereo calibration. Ego-OSCAR does not aim to match the per-unit fidelity of research-grade systems such as Project Aria; it aims to be the cheapest defensible substrate for crowdsourced egocentric capture, and to lower the activation energy for any team that wants to collect egocentric data at scale. All hardware designs, software, and the dataset are open-sourced