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Bacteria identification from microscopic morphology using naïve bayes

Mohamad, Noor Amaleena and Jusoh Awang, Noorain and Htike@Muhammad Yusof, Zaw Zaw and Shoon , Lei Win (2014) Bacteria identification from microscopic morphology using naïve bayes. International Journal of Computer Science, Engineering and Information Technology (IJCSEIT), 4 (2). pp. 1-9. ISSN 2231-3605 (P) 2231-3117 (O)

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Great knowledge and experience on microbiology are required for accurate bacteria identification. Automation of bacteria identification is required because there might be a shortage of skilled microbiologists and clinicians at a time of great need. We propose an automatic bacteria identification framework that can classify three famous classes of bacteria namely Cocci, Bacilli and Vibrio from microscopic morphology using the Naïve Bayes classifier. The proposed bacteria identification framework comprises two steps. In the first step, the system is trained using a set of microscopic images containing Cocci, Bacilli, and Vibrio. The input images are normalized to emphasize the diameter and shape features. Edge-based descriptors are then extracted from the input images. In the second step, we use the Naïve Bayes classifier to perform probabilistic inference based on the input descriptors. 64 images for each class of bacteria were used as the training set and 222 images consisting of the three classes of bacteria and other random images such as humans and airplanes were used as the test set. There are no images overlapped between the training set and the test set. The system was found to be able to accurately discriminate the three classes of bacteria. Moreover, the system was also found to be able to reject images that did not belong to any of the three classes of bacteria. The preliminary results demonstrate how a simple machine learning classifier with a set of simple image-based features can result in high classification accuracy. The preliminary results also demonstrate the efficacy and efficiency of our two-step automatic bacteria identification approach and motivate us to extend this framework to identify a variety of other types of bacteria.

Item Type: Article (Journal)
Additional Information: 6919/37781
Uncontrolled Keywords: Bacteria Identification, Cocci,Bacilli, Vibrio, Naïve Bayes, Machine Learning
Subjects: Q Science > Q Science (General)
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering
Depositing User: Mr. Zaw Zaw Htike
Date Deposited: 19 Aug 2014 10:22
Last Modified: 20 Jun 2018 09:12
URI: http://irep.iium.edu.my/id/eprint/37781

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