Adaptive feature selection for active trachoma image classification

Loading...
Thumbnail Image
File version

Version of Record (VoR)

Author(s)
Zewudie, MS
Xiong, S
Yu, X
Wu, X
Mehamed, MA
Griffith University Author(s)
Primary Supervisor
Other Supervisors
Editor(s)
Date
2024
Size
File type(s)
Location
Abstract

Trachoma is a neglected tropical eye disease caused by ocular strains of Chlamydia trachomatis, which affects millions of people worldwide. To examine the eye for signs of active trachoma, healthcare providers typically look for clusters of five or more follicles on the conjunctiva of the upper eyelid for the follicular inflammatory trachoma stage. However, it is also possible to find individual follicles scattered throughout the conjunctiva, particularly in mild or early-stage trachoma cases. Additionally, the datasets are photographic images collected in the field that can be high-dimensional and may contain large amounts of redundant information. We propose integrating novel attention-based feature extraction and feature selection techniques to address these challenges. First, we present the Lambda layer within the Convolutional Block Attention Module (L-CBAM) to normalize attention weights and improve the feature extraction process. Second, we introduce an adaptive mechanism, Adaptive Beta Hill Climbing (AβHC) with Social Ski-Driver (SSD), which adjusts the exploration-exploitation trade-off during the search process, allowing for better exploration of the search space and more efficient convergence toward an optimal feature subset. We then use the multilayer perceptron (MLP) classifier to produce final classification results using selected subsets. We evaluated the proposed approach on active trachoma inverted eyelid images and obtained accuracy scores of 93.3% with only 19.7% of the selected features, surpassing many of the algorithms used for comparison. Our proposed method has demonstrated excellent performance compared to recent works utilizing the same datasets. The source code of this work is available at https://github.com/mshitie2/Active_Trachoma.

Journal Title

Knowledge-Based Systems

Conference Title
Book Title
Edition
Volume

294

Issue
Thesis Type
Degree Program
School
Publisher link
Patent number
Funder(s)
Grant identifier(s)
Rights Statement
Rights Statement

© 2024 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

Item Access Status
Note
Access the data
Related item(s)
Subject

Biomedical imaging

Artificial intelligence

Data management and data science

Machine learning

Persistent link to this record
Citation

Zewudie, MS; Xiong, S; Yu, X; Wu, X; Mehamed, MA, Adaptive feature selection for active trachoma image classification, Knowledge-Based Systems, 2024, 294, pp. 111764

Collections