Estimation of Finger Force by Nail Color Change and Measurement of Capillary Refilling by Finger Pressure

Takumi Nagasawa; Raquel Pantojo de Souza; Kazuki Iwata; Keiko Ogawa-Ochiai; Norimichi Tsumura; George C. Cardoso

doi:10.1364/CLEOPR.2022.CThP17F_03

Proceedings of the 2022 Conference on Lasers and Electro-Optics Pacific Rim
Technical Digest Series (Optica Publishing Group, 2022),
paper CThP17F_03
•https://doi.org/10.1364/CLEOPR.2022.CThP17F_03

Estimation of Finger Force by Nail Color Change and Measurement of Capillary Refilling by Finger Pressure

Takumi Nagasawa, Raquel Pantojo de Souza, Kazuki Iwata, Keiko Ogawa-Ochiai, Norimichi Tsumura, and George C. Cardoso

Conference on Lasers and Electro-Optics/Pacific Rim 2022

Sapporo Japan
31 August–5 September 2022
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Biomedical Sensors and Systems II (CThP17F)

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T. Nagasawa, R. P. de Souza, K. Iwata, K. Ogawa-Ochiai, N. Tsumura, and G. C. Cardoso, "Estimation of Finger Force by Nail Color Change and Measurement of Capillary Refilling by Finger Pressure," in Proceedings of the 2022 Conference on Lasers and Electro-Optics Pacific Rim, Technical Digest Series (Optica Publishing Group, 2022), paper CThP17F_03.

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Abstract

We propose a method for measuring capillary refill time based on skin color changes after releasing finger pressure on the forearm using an RGB camera. We also estimate the finger force from the fingernail color.

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