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Journal of Nanomaterials
Volume 2014, Article ID 738490, 6 pages
Research Article

Automated Nanofiber Diameter Measurement in SEM Images Using a Robust Image Analysis Method

1Department of Marine Engineering Operations, Yildiz Technical University, 34349 Istanbul, Turkey
2College of Textiles, North Carolina State University, Raleigh, NC 27606, USA
3Faculty of Computer and Informatics, Istanbul Technical University, 34469 Istanbul, Turkey
4Faculty of Electrical and Electronics Engineering, Istanbul Technical University, 34469 Istanbul, Turkey

Received 24 June 2014; Accepted 16 October 2014; Published 6 November 2014

Academic Editor: Shuangxi Xing

Copyright © 2014 Ertan Öznergiz et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Due to the high surface area, porosity, and rigidity, applications of nanofibers and nanosurfaces have developed in recent years. Nanofibers and nanosurfaces are typically produced by electrospinning method. In the production process, determination of average fiber diameter is crucial for quality assessment. Average fiber diameter is determined by manually measuring the diameters of randomly selected fibers on scanning electron microscopy (SEM) images. However, as the number of the images increases, manual fiber diameter determination becomes a tedious and time consuming task as well as being sensitive to human errors. Therefore, an automated fiber diameter measurement system is desired. In the literature, this task is achieved by using image analysis algorithms. Typically, these methods first isolate each fiber in the image and measure the diameter of each isolated fiber. Fiber isolation is an error-prone process. In this study, automated calculation of nanofiber diameter is achieved without fiber isolation using image processing and analysis algorithms. Performance of the proposed method was tested on real data. The effectiveness of the proposed method is shown by comparing automatically and manually measured nanofiber diameter values.