Joo Beom Eom

Abstract We report on a method to determine whether alcohol has been consumed using camera-based, non-contact imaging photoplethysmography (IPPG) technology. IPPG signals were collected using a visible-band CMOS camera and a 520 nm light-emitting diode (LED). The light source was set to a uniform light output of 2.8 mW/cm², and images were captured at 150 frames per second.

Abstract We report a non-contact burn severity assessment system using the image-based photoplethysmography (IPPG) technique by fabricating a multi-wavelength imaging system. In this burn assessment system, four wavelengths (visible light wavelengths of 405 nm, 520 nm, 660 nm, and near-infrared wavelength of 940 nm) were used, and burn severity was identified based on the fact that each wavelength has different penetration depths.

CONFLICT OF INTEREST STATEMENT The authors declare no conflicts of interest. Supporting Information Filename Description lsm23743-sup-0001-Video_1.avi124.3 MB Video 1. A video of bubble dynamics and stone retropulsion when the duration of the first pulse was 200 μs and its energy was 200 mJ. lsm23743-sup-0002-Video_2.avi124.3 MB Video 2. A video of bubble dynamics and stone retropulsion when the duration of the first pulse was 300 μs and its energy was 200 mJ. REFERENCES 1, , , , , , et al.