Multispectral image sensor attachable to low-cost microcomputers

被引：0

作者：

Ohtera, Yasuo ^{[1
]}

Sato, Airi ^{[1
]}

Kawashima, Takayuki ^{[2
]}

Takaya, Tomohisa ^{[1
]}

Okura, Yuki ^{[1
]}

机构：

[1] Toyama Prefectural Univ, Kurokawa 5180, Imizu, Toyama 9390398, Japan

[2] Photon Lattice Inc, Sendai, Miyagi 9893204, Japan

来源：

OPTICAL REVIEW | 2022年 / 29卷 / 02期

关键词：

Multi-spectral imaging; Raspberry Pi; Spectral encoding; Autocloning;

D O I：

10.1007/s10043-022-00726-3

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Multi-spectral filter array composed of a wavy alternating dielectric multilayer was integrated on a CMOS image sensor of the Raspberry Pi HQ Camera. The filter array consists of 16-channel elementary filters exhibiting pseudo-random transmission characteristics. Each filter covers 20 x 20 CMOS pixels. The incoming spectrum is encoded as a set of 16 grayscale intensities and passed to principal component analysis (PCA) to classify the states of the target spectral characteristic. Preliminary demonstration for blood flow state identification in human peripheral revealed proposed device's potential ability as a real-time monitoring tool in the near infrared.

引用

页码：140 / 152

页数：13

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