標題: Image Sensor-Based Heart Rate Evaluation From Face Reflectance Using Hilbert-Huang Transform
作者: Chen, Duan-Yu
Wang, Jun-Jhe
Lin, Kuan-Yi
Chang, Hen-Hong
Wu, Han-Kuei
Chen, Yung-Sheng
Lee, Suh-Yin
資訊工程學系
Department of Computer Science
關鍵字: Computer vision;biomedical signal processing
公開日期: 1-Jan-2015
摘要: Monitoring heart rates using conventional electrocardiogram equipment requires patients to wear adhesive gel patches or chest straps that can cause skin irritation and discomfort. Commercially available pulse oximetry sensors that attach to the fingertips or earlobes also cause inconvenience for patients and the spring-loaded clips can be painful to use. Therefore, a novel robust face-based heart rate monitoring technique is proposed to allow for the evaluation of heart rate variation without physical contact with the patient. Face reflectance is first decomposed from a single image and then heart rate evaluation is conducted from consecutive frames according to the periodic variation of reflectance strength resulting from changes to hemoglobin absorptivity across the visible light spectrum as heartbeats cause changes to blood volume in the blood vessels in the face. To achieve a robust evaluation, ensemble empirical mode decomposition of the Hilbert-Huang transform is used to acquire the primary heart rate signal while reducing the effect of ambient light changes. Our proposed approach is found to outperform the current state of the art, providing greater measurement accuracy with smaller variance and is shown to be feasible in real-world environments.
URI: http://dx.doi.org/10.1109/JSEN.2014.2347397
http://hdl.handle.net/11536/123852
ISSN: 1530-437X
DOI: 10.1109/JSEN.2014.2347397
期刊: IEEE SENSORS JOURNAL
Volume: 15
起始頁: 618
結束頁: 627
Appears in Collections:Articles