Cited by 69Cell Image Analysis TechniquesRemote-Sensing Image ClassificationDigital Holography and Microscopy

Trends in digital image processing of isolated microalgae by incorporating classification algorithm

Chong, Jun Wei Roy, Khoo, Kuan Shiong, Chew, Kit Wayne, Ting, Huong-Yong, Show, Pau Loke·2023·Biotechnology Advances

Abstract

Identification of microalgae species is of importance due to the uprising of harmful algae blooms affecting both the aquatic habitat and human health. Despite this occurence, microalgae have been identified as a green biomass and alternative source due to its promising bioactive compounds accumulation that play a significant role in many industrial applications. Recently, microalgae species identification has been conducted through DNA analysis and various microscopy techniques such as light, scanning electron, transmission electron, and atomic force -microscopy. The aforementioned procedures have encouraged researchers to consider alternate ways due to limitations such as costly validation, requiring skilled taxonomists, prolonged analysis, and low accuracy. This review highlights the potential innovations in digital microscopy with the incorporation of both hardware and software that can produce a reliable recognition, detection, enumeration, and real-time acquisition of microalgae species. Several steps such as image acquisition, processing, feature extraction, and selection are discussed, for the purpose of generating high image quality by removing unwanted artifacts and noise from the background. These steps of identification of microalgae species is performed by reliable image classification through machine learning as well as deep learning algorithms such as artificial neural networks, support vector machines, and convolutional neural networks. Overall, this review provides comprehensive insights into numerous possibilities of microalgae image identification, image pre-processing, and machine learning techniques to address the challenges in developing a robust digital classification tool for the future.

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Crossref · 10.1016/j.biotechadv.2023.108095

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Authors
Chong, J. W. R., Khoo, K. S., Chew, K. W., Ting, H.-Y., & Show, P. L.
Affiliations
  • Wenzhou University (CN)
  • Yuan Ze University (TW)
  • Nanyang Technological University (SG)
  • University of Technology Sarawak (MY)
  • University of Nottingham (GB)
Corresponding author
  • Khoo, Kuan Shiong
  • Show, Pau Loke
Venue
Biotechnology Advances
Publisher
Elsevier BV
Published
2023-03
Volume
63
Pages
108095
ISSN
0734-9750 (ISSN-L)
OpenAlex
W4313531078
Cited by
69
References
152
Citations by year
2026: 10 · 2025: 23 · 2024: 18 · 2023: 18
FWCI
2.28
Type
journal article
Language
en
Open access
closed
Locations
  • Biotechnology Advances (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biophysics › Cell Image Analysis Techniques
  • Physical Sciences › Engineering › Media Technology › Remote-Sensing Image Classification
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Digital Holography and Microscopy
Keywords
digital microscopy, image classification, harmful algal blooms, image preprocessing, feature extraction, noise reduction, convolutional neural networks, support vector machine, artificial neural networks, green biomass
MeSH terms
Algorithms, Humans, Image Processing, Computer-Assisted, Software, Neural Networks, Computer, Microalgae

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