Noncontact Heart Rate Measurement Using a Webcam, Based on Joint Blind Source Separation and a Skin Reflection Model: For a Wide Range of Imaging Conditions

<div>Schematic of the illumination variation experiment. (a) Timing of the color temperature changes, where the color temperature of the LED lamp was switched between 3300 kelvin and 5600 kelvin every 10 seconds. (b) Experimental setup.</div>

Journal of Sensors

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Figure 9

Figure 9: Noncontact Heart Rate Measurement Using a Webcam, Based on Joint Blind Source Separation and a Skin Reflection Model: For a Wide Range of Imaging Conditions 

Figure 9 | Noncontact Heart Rate Measurement Using a Webcam, Based on Joint Blind Source Separation and a Skin Reflection Model: For a Wide Range of Imaging Conditions 