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Table 1 Descriptions of the video clips in each category

From: Measurement of heart rate variability using off-the-shelf smart phones

Categories

Clip names

Descriptions

Static subjects

Static_1

The subject kept the body relaxed and static

Static_2

There was desk light illuminated on the face

Static_3

The subject kept smile during video recording

Static_4

The subject kept making facial expression

Static subject with makeup

static_M1

The subject put the CC cream on her face

Static_M2

The subject in static_M1 put additional powder foundation on her face

Static_M3

The subject in static_M2 put additional blush powder on her face

Occasional motion

Motion_O1

The subject shook the head three times

Motion_O2

The subject moved away from camera and then moved back

Motion_O3

The subject turned the head, talking, then turned back, twice

Frequent motion

Motion_F1

The subject kept shaking his head

Motion_F2

The subject rotated his head, move the body, or moved the camera several times