ABSTRACT
With the rapid development of modern science and technology, the application of infrared (IR) optical thin films is increasingly widespread, including in aerospace, autonomous driving, military development, and the fight against Coronavirus Disease 2019 (COVID-19), in which thin film devices play an important role. Similarly, with the improvement of user requirements, the precision requirements for the preparation of optical films are also developing and improving. In this paper, the IR optical thickness monitoring system is studied with the noble algorithm introducing the phase-locked amplifier current and single film reflectivity coefficient. An optical control system is developed to monitor the IR thin film accurately, which aids the IR narrow-band filter film research.
ABSTRACT
Telecare has become of increasing importance during the COVID-19 pandemic, and the precise measurement of plethysmography has been shown to be highly effective. We propose a plethysmography measurement method using skin images captured by a combination of RGB and a narrowband filter (NBF) camera. For precise measurement, we introduce an independent component analysis score combined with the moving images. Our experimental results showed that the proposed method resulted in a better reproduction of plethysmography than that of individual images and also ICA scores only from RGB moving images. © 2022 IEEE.