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Contents
Preface xxi
Chapter 1 Practical Aspects of a Vision System — Image Display,
Input/Output, and Library Calls 1
OpenCV 2
The Basic OpenCV Code 2
The IplImage Data Structure 3
Reading and Writing Images 6
Image Display 7
An Example 7
Image Capture 10
Interfacing with the AIPCV Library 14
Website Files 18
References 18
Chapter 2 Edge-Detection Techniques 21
The Purpose of Edge Detection 21
Traditional Approaches and Theory 23
Models of Edges 24
Noise 26
Derivative Operators 30
Template-Based Edge Detection 36
Edge Models: The Marr-Hildreth Edge Detector 39
The Canny Edge Detector 42
The Shen-Castan (ISEF) Edge Detector 48
A Comparison of Two Optimal Edge Detectors 51
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