4.7 Article

Multi-stage malaria parasite recognition by deep learning

Journal

GIGASCIENCE
Volume 10, Issue 6, Pages -

Publisher

OXFORD UNIV PRESS
DOI: 10.1093/gigascience/giab040

Keywords

malaria; multi-stage recognition; microscopic image analysis; knowledge transfer; graph convolutional network; deep learning

Funding

  1. Natural Science Foundation of Shenzhen City [JCYJ20180306172131515]
  2. Fundamental Research Funds for the Central Universities [HIT.NSRIF.2020064]

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This article introduces a novel deep learning approach using a deep transfer graph convolutional network (DTGCN) for the recognition of malaria parasites of various stages in blood smear images. The method has shown higher accuracy and effectiveness in publicly available microscopic images of multi-stage malaria parasites compared to a wide range of state-of-the-art approaches.
Motivation: Malaria, a mosquito-borne infectious disease affecting humans and other animals, is widespread in tropical and subtropical regions. Microscopy is the most common method for diagnosing the malaria parasite from stained blood smear samples. However, this technique is time consuming and must be performed by a well-trained professional, yet it remains prone to errors. Distinguishing the multiple growth stages of parasites remains an especially challenging task. Results: In this article, we develop a novel deep learning approach for the recognition of malaria parasites of various stages in blood smear images using a deep transfer graph convolutional network (DTGCN). To our knowledge, this is the first application of graph convolutional network (GCN) on multi-stage malaria parasite recognition in such images. The proposed DTGCN model is based on unsupervised learning by transferring knowledge learnt from source images that contain the discriminative morphology characteristics of multi-stage malaria parasites. This transferred information guarantees the effectiveness of the target parasite recognition. This approach first learns the identical representations from the source to establish topological correlations between source class groups and the unlabelled target samples. At this stage, the GCN is implemented to extract graph feature representations for multi-stage malaria parasite recognition. The proposed method showed higher accuracy and effectiveness in publicly available microscopic images of multi-stage malaria parasites compared to a wide range of state-of-the-art approaches. Furthermore, this method is also evaluated on a large-scale dataset of unseen malaria parasites and the Babesia dataset.

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