Comparison of video-based methods for respiration rhythm measurement

Publication date: May 2019Source: Biomedical Signal Processing and Control, Volume 51Author(s): M. Mateu-Mateus, F. Guede-Fernández, V. Ferrer-Mileo, M.A. García-González, J. Ramos-Castro, M. Fernández-ChimenoAbstractThe aim of this work is to characterize the differences in the respiratory rhythm obtained through three video based methods by comparing the obtained respiratory signals with the one obtained with the gold standard method in adult population. The analysed methods are an RGB camera, a depth camera and a thermal camera while the gold standard is an inductive thorax plethysmography system (Respiband system from BioSignals Plux).21 healthy subjects where measured, performing 4 tests for each subject. The respiratory rhythm and its variability was obtained from the four respiratory signals (3 video methods and gold standard). The signal acquisition was performed with custom and proprietary algorithms. To characterize the respiratory rhythm and its variability obtained with the different video sources and gold standard, the instantaneous frequency, Bland-Altman plots and standard deviation of the error between video methods and the gold standard have been computed.The depth and RGB camera present high agreement with no statistical differences between them, with errors when comparing with the gold standard in the range of mHz. The thermal camera performs poorly if compared with the two other methods, nevertheless it cannot be discarded directly because some errors ...
Source: Biomedical Signal Processing and Control - Category: Biomedical Science Source Type: research