3Dイベント表現によるイベントベース人体姿勢推定の探求
Exploring Event-based Human Pose Estimation with 3D Event Representations
イベントカメラの非同期性を活かすため、2つの3Dイベント表現（RasEPCとDEV）を提案し、屋外シーン向けの合成データセットEV-3DPWを構築して、イベントベース人体姿勢推定の精度を向上させた。
著者: Xiaoting Yin, Hao Shi, Jiaan Chen, Ze Wang, Yaozu Ye, Kailun Yang, Kaiwei Wang
分類: cs.CV, cs.MM, cs.RO, eess.IV
原文アブストラクト
Human pose estimation is a fundamental and appealing task in computer vision. Although traditional cameras are commonly applied, their reliability decreases in scenarios under high dynamic range or heavy motion blur, where event cameras offer a robust solution. Predominant event-based methods accumulate events into frames, ignoring the asynchronous and high temporal resolution that is crucial for distinguishing distinct actions. To address this issue and to unlock the 3D potential of event information, we introduce two 3D event representations: the Rasterized Event Point Cloud (RasEPC) and the Decoupled Event Voxel (DEV). The RasEPC aggregates events within concise temporal slices at identical positions, preserving their 3D attributes along with statistical information, thereby significantly reducing memory and computational demands. Meanwhile, the DEV representation discretizes events into voxels and projects them across three orthogonal planes, utilizing decoupled event attention to retrieve 3D cues from the 2D planes. Furthermore, we develop and release EV-3DPW, a synthetic event-based dataset crafted to facilitate training and quantitative analysis in outdoor scenes. Our methods are tested on the DHP19 public dataset, MMHPSD dataset, and our EV-3DPW dataset, with further qualitative validation via a derived driving scene dataset EV-JAAD and an outdoor collection vehicle. Our code and dataset have been made publicly available at https://github.com/MasterHow/EventPointPose.
