Non-contact human respiration and heart beat signal detection method based on infrared sequence image
A technology of sequential images and heart rate signals, applied in diagnostic recording/measurement, medical science, sensors, etc., can solve problems such as confusion and mode confusion, and achieve the effect of convenient implementation and simple operation
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[0025] Method flow chart of the present invention is as figure 1 As shown, the details are as follows:
[0026] 1. Build an infrared dynamic image acquisition system
[0027] The infrared dynamic image acquisition system consists of the following three parts: 1. FLIR infrared long-wave sensor (NETD<90mk at30℃), 2. Daheng image acquisition card (VT140), 3. Computer workstation (DELL precision T5500).
[0028] 2. Acquisition of infrared sequence images
[0029] The infrared video adopts PAL format, the frame rate is 25 frames per second, and the storage format is 8bit grayscale image. The grayscale value is linearly related to the measured temperature, and the resolution is 768pixel*576pixel. Before being tested, the subjects must rest in the examination room for more than 15 minutes to adapt to the ambient temperature and reach thermal equilibrium. Then the subject sits calmly on the chair, and at the same time, the subject is required not to turn his head arbitrarily during...
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