Enhancement of signal-to-noise ratio for fluorescence endoscope image based on fast digital lock-in algorithm Article Swipe

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Huiquan Wang , Meng Hu , Xia Fang , Meng Guo , Shengzhao Zhang , Zhe Zhao , Guang Han , Jinhai Wang ·

YOU? · · 2021 · Open Access · · DOI: https://doi.org/10.1098/rsos.200779

In this paper, the signal-to-noise ratios (SNR) of two image channels were enhanced with the fast digital lock-in algorithm. In order to simultaneously improve the quality of white and fluorescence images obtained by fluorescence endoscope, and improve the SNR to achieve a better image processing effect, two sources of white light and near-infrared light of a fluorescence endoscope were modulated, then the acquired images were demodulated into white and fluorescence images. A fluorescent endoscope experimental platform was setup to acquire endoscopic images of a target dyed by indocyanine green. The experimental results showed that the SNR of white and fluorescent images without the lock-in algorithm were 36.56 dB and 33.47 dB, respectively. However, with the lock-in algorithm, the SNR of white and fluorescent images were 39.54 dB and 35.70 dB, respectively. The SNR of white and fluorescent images was increased by 8.2% and 6.7%, respectively, by appling the digital lock-in algorithm. Therefore, this novel fluorescence endoscope based on the fast digital lock-in algorithm can rapidly and simultaneously obtain two-channel images of white light and fluorescence, effectively enhance the SNR of white and fluorescent images, and improve the imaging quality.

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Fluorescence Endoscope Image quality Signal-to-noise ratio (imaging) Optics White noise Computer science SIGNAL (programming language) Digital camera Computer vision Lock (firearm) Artificial intelligence Materials science Physics Image (mathematics) Engineering Telecommunications Medicine Mechanical engineering Programming language Radiology

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Type: article
Language: en
Landing Page: https://doi.org/10.1098/rsos.200779
OA Status: gold
Cited By: 5
References: 18
Related Works: 10
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DOI: https://doi.org/10.1098/rsos.200779

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Title: Enhancement of signal-to-noise ratio for fluorescence endoscope image based on fast digital lock-in algorithm

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Language: en

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Publication year: 2021

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Publication date: 2021-03-01

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Authors: Huiquan Wang, Meng Hu, Xia Fang, Meng Guo, Shengzhao Zhang, Zhe Zhao, Guang Han, Jinhai Wang

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Landing page: https://doi.org/10.1098/rsos.200779

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Concepts: Fluorescence, Endoscope, Image quality, Signal-to-noise ratio (imaging), Optics, White noise, Computer science, SIGNAL (programming language), Digital camera, Computer vision, Lock (firearm), Artificial intelligence, Materials science, Physics, Image (mathematics), Engineering, Telecommunications, Medicine, Mechanical engineering, Programming language, Radiology

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Cited by: 5

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