期刊
IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING
卷 60, 期 5, 页码 1280-1289出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TBME.2012.2232927
关键词
Facial tracking; matte; sleep studies; stress studies; thermal imaging
资金
- Defense Academy for Credibility Assessment
- National Science Foundation (NSF) [IIS-0812526]
Accurate tracking of facial tissue in thermal infrared imaging is challenging because it is affected not only by positional but also physiological (functional) changes. This paper presents a particle filter tracker driven by a probabilistic template function with both spatial and temporal smoothing components, which is capable of adapting to abrupt positional and physiological changes. The method was tested on tracking facial regions of subjects under varying physiological and environmental conditions in 25 thermal clips. It demonstrated robustness and accuracy, outperforming other strategies. This new method promises improved performance in a number of biomedical applications that involve physiological measurements on the face, such as unobtrusive sleep and stress studies.
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