發明
中華民國
109125868
I 741708
非接觸式呼吸檢測方法及其系統
國立雲林科技大學
2021/10/01
本發明提供一種非接觸式呼吸檢測方法,其用以檢測受測者之呼吸率,且非接觸式呼吸檢測方法包含拍攝步驟、擷取步驟、運算步驟以及轉換步驟。拍攝步驟係提供攝像機拍攝受測者,以產生臉部影像。擷取步驟係提供處理器模組擷取臉部影像而產生複數特徵 點。運算步驟係驅動處理器模組依據光流法運算特徵 點而產生複數呼吸訊號 。轉換步驟係驅動處理器模組轉換各呼吸訊號而產生功率頻譜,並依據功率頻譜計算而產生索引值,然後依據索引值推算得呼吸率。藉此,利用電腦視覺和攝影機以非接觸的方式,進而 檢測受測者的呼吸率 。 A contactless breathing detection method is for detecting a breathe rate of a subject. The contactless breathing detection method includes a photographing step, a capturing step, a calculating step, and a converting step. The photographing step provides a camera to photograph the subject to generate a facial image. The capturing step provides a processor module to capture the facial image to generate a plurality of feature points. The calculating step drives the processor module to calculate the feature points according to a Lucas-Kanade method to generate a plurality of breath signals. The converting step drives the processor module to convert each of the breath signals to generate a power spectrum and generate an index value based on the calculation of the power spectrums, and the breathe rate is extrapolated according to the index value. Therefore, it is favorable for using the computer vision and the camera to detect the breath rate of the subject in a contactless manner.
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