Journal: Biomedical Optics Express

Article Title: Spatiotemporal monitoring of changes in oxy/deoxy-hemoglobin concentration and blood pulsation on human skin using smartphone-enabled remote multispectral photoplethysmography

doi: 10.1364/BOE.423160

Figure Lengend Snippet: (A) Schematic of the smartphone remote PPG (SP-rmPPG) system setup for video recording of the subject. (B) Spectral power distribution of the built-in flashlight in the smartphone (iPhone 8, Apple Inc, USA). (C) Spectral sensitivity of R, G and B channels of the smartphone camera used to record videos. (D) Photograph of the standard color checker used to calibrate the smartphone for multispectral imaging.

Article Snippet: U1 (Minimum/Average lux) and U2 (Minimum /Maximum lux) were assessed to be 0.99 and 0.92, respectively, indicating that the illumination is relatively uniform across the sample target. fig ft0 fig mode=article f1 fig/graphic|fig/alternatives/graphic mode="anchored" m1 Open in a separate window Fig. 1. caption a7 (A) Schematic of the smartphone remote PPG (SP-rmPPG) system setup for video recording of the subject. (B) Spectral power distribution of the built-in flashlight in the smartphone (iPhone 8, Apple Inc, USA). (C) Spectral sensitivity of R, G and B channels of the smartphone camera used to record videos. (D) Photograph of the standard color checker used to calibrate the smartphone for multispectral imaging.

Techniques: Imaging