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ASM Handbook

Metallography and Microstructures

Edited by
George F. Vander Voort
George F. Vander Voort
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ASM International
Volume
9
ISBN electronic:
978-1-62708-177-1
Publication date:
2004
Book Chapter

Digital Imaging

By
Sidnei Paciornik
Sidnei Paciornik
Catholic University of Rio de Janeiro
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Marcos Henrique de Pinho Mauricio
Marcos Henrique de Pinho Mauricio
Catholic University of Rio de Janeiro
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Published:
2004
Page range:
368 - 402
Publication history
November 01, 2004

Abstract

This article reviews the main theoretical and practical aspects of sequence normally followed in digital image-acquisition, processing, analysis, and output for material characterization. It discusses the main methods of digital imaging, image processing, and analysis, as applied to microscopy of materials. The article describes the basic concepts of sampling and resolution and quantization of light microscopy, scanning electron microscopy, and transmission electron microscopy. It discusses the acquisition of a digital image that accurately represents the sample under observation and output of the image to a printer. The methods used to enhance the digital image and to extract quantitative information are also described. Different types of image segmentation, namely, adaptive segmentation and contour-based segmentation, are reviewed. The article also presents case studies on the application of image processing and analysis to materials characterization.

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Sidnei Paciornik, Marcos Henrique de Pinho Mauricio, 2004. "Digital Imaging", Metallography and Microstructures, George F. Vander Voort

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