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Contents
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Preface xi
1 Introduction 1
1.1 Overview 1
1.2 Human and computer vision 1
1.3 The human vision system 3
1.3.1 The eye 4
1.3.2 The neural system 6
1.3.3 Processing 7
1.4 Computer vision systems 9
1.4.1 Cameras 10
1.4.2 Computer interfaces 12
1.4.3 Processing an image 14
1.5 Mathematical systems 15
1.5.1 Mathematical tools 16
1.5.2 Hello Mathcad, hello images! 16
1.5.3 Hello Matlab! 21
1.6 Associated literature 24
1.6.1 Journals and magazines 24
1.6.2 Textbooks 25
1.6.3 The web 28
1.7 Conclusions 29
1.8 References 29
2 Images, sampling and frequency domain processing 33
2.1 Overview 33
2.2 Image formation 34
2.3 The Fourier transform 37
2.4 The sampling criterion 43
2.5 The discrete Fourier transform 47
2.5.1 One-dimensional transform 47
2.5.2 Two-dimensional transform 49
2.6 Other properties of the Fourier transform 54
2.6.1 Shift