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2013 | OriginalPaper | Chapter

2. Overview: Image Preprocessing

Authors : Christian Demant, Carsten Garnica, Bernd Streicher-Abel

Published in: Industrial Image Processing

Publisher: Springer Berlin Heidelberg

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Abstract

Preprocessing algorithms frequently form the first processing step after capturing the image, as you will see in many of the examples in the following chapters. Therefore, we will start the overview chapters with an introduction to image preprocessing. Gonzalez and Woods (2008) present a comprehensive overview. To give a clear conceptual idea of the effect of the various operations we will use very simple synthetic sample images in this chapter. The application examples in the following chapters use many of these algorithms on real-world industrial images.

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Footnotes
1
To avoid even more complicated abbreviations, we will always assume to work with images of 256 gray levels.
 
2
In general, we would have to write this as g/(g max  + 1).
 
3
We differ here from other literature that uses a scaling factor of 1/8. We will demonstrate that 1/4 is sufficient to assure a limitation to the gray value range.
 
4
Please note that this is not a matrix multiplication where the scalar products of rows and columns are computed. Multiplication is done pixel by pixel.
 
Literature
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go back to reference Gonzalez RC, Woods RE (2008) Digital image processing, 3rd edn. Pearson Education, Upper Saddle River Gonzalez RC, Woods RE (2008) Digital image processing, 3rd edn. Pearson Education, Upper Saddle River
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Metadata
Title
Overview: Image Preprocessing
Authors
Christian Demant
Carsten Garnica
Bernd Streicher-Abel
Copyright Year
2013
Publisher
Springer Berlin Heidelberg
DOI
https://doi.org/10.1007/978-3-642-33905-9_2

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