Spectral-Temporal Fusion Representation for Person-in-Bed Detection
This addresses bed occupancy detection for healthcare monitoring, with incremental improvements in feature representation and loss optimization.
The study tackled the problem of detecting whether a person is in bed using accelerometer signals, achieving detection scores of 100.00% and 95.55% in two tracks of a challenge.
This study is based on the ICASSP 2025 Signal Processing Grand Challenge's Accelerometer-Based Person-in-Bed Detection Challenge, which aims to determine bed occupancy using accelerometer signals. The task is divided into two tracks: "in bed" and "not in bed" segmented detection, and streaming detection, facing challenges such as individual differences, posture variations, and external disturbances. We propose a spectral-temporal fusion-based feature representation method with mixup data augmentation, and adopt Intersection over Union (IoU) loss to optimize detection accuracy. In the two tracks, our method achieved outstanding results of 100.00% and 95.55% in detection scores, securing first place and third place, respectively.