| Description |
1 online resource (231 pages) |
| Contents |
Cover; Half Title; Title Page; Copyright Page; Table of Contents; Preface; Authors; Chapter 1: Introduction; 1.1 Aim of This Book; 1.2 Imaging in Inspections; 1.2.1 Advantages of image-processing as an inspection tool; 1.2.2 Limitations; 1.3 Sample Applications of Image-Processing Techniques; 1.3.1 Measuring the width and length of cracks; 1.3.2 Automatic corrosion detection; 1.3.3 Bridge vibration assessment; 1.3.4 3D shape recovery of marine growth colonized structure; 1.4 Book Outline; 1.5 Summary; References; Chapter 2: Inspection methods and image analysis; 2.1 INTRODUCTION |
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2.2 INSPECTION OF MARINE STRUCTURES2.3 STATUS OF INSPECTION PROCESSES; 2.3.1 Types of inspections; 2.3.1.1 Routine inspections; 2.3.1.2 Principal inspections; 2.3.1.3 Special inspections; 2.3.2 Underwater inspections; 2.3.3 Visual inspections carried out by divers; 2.3.4 Underwater non-destructive testing (NDT) tools; 2.3.4.1 Electromagnetic methods; 2.3.4.2 Ultrasonic methods; 2.3.4.3 Radiographic methods; 2.3.4.4 Acoustic emission; 2.3.4.5 Vibration analysis; 2.4 CONVENTIONAL PHOTO COLLECTION PROCEDURES; 2.5 UNDERWATER PHOTOGRAPHY |
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2.6 SCOPE FOR INTEGRATING IMAGE-BASED TECHNIQUES INTO INSPECTIONS2.7 USING IMAGE-PROCESSING DATA FOR SUBSEQUENT ANALYSIS; 2.8 CONCLUSION; REFERENCES; Chapter 3: Fundamentals of image acquisition and imaging protocol; 3.1 Introduction; 3.2 Camera; 3.2.1 Sensor; 3.2.1.1 Sensor size; 3.2.1.2 Pixel count; 3.2.1.3 Dynamic range; 3.2.1.4 Sensor technology; 3.2.2 Lens; 3.2.2.1 Focal length; 3.2.2.2 Aperture; 3.2.2.3 Types of lenses; 3.2.2.4 Other lens features; 3.2.2.5 Filters and lens ports; 3.3 Camera Settings; 3.3.1 Image archiving; 3.3.2 Focusing; 3.3.3 Aperture, ISO, and shutter speed |
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3.3.4 HDR3.4 Guidelines for Obtaining Good Quality Imagery for Quantitative Analysis; 3.4.1 Collection protocol; 3.4.1.1 Photographic lighting; 3.4.1.2 Turbidity; 3.4.1.3 Underwater stereo image acquisition; 3.4.1.4 Logistical considerations; 3.4.1.5 Combined underwater protocol; 3.5 Conclusion; References; Chapter 4: Fundamentals of image analysis and interpretation; 4.1 Introduction; 4.2 Image Representation; 4.2.1 Image types and pixel bit-depth; 4.2.2 Color spaces; 4.3 Pre-processing Algorithms; 4.3.1 Point operations; Histograms; Contrast enhancement; 4.3.2 Neighborhood operations |
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FilteringDe-noising; Edge enhancement and detection; Morphological operations; 4.3.3 Image restoration/enhancement methods using multiple images; Generating HDR imagery; Capturing bracketed exposures; Generating the HDR image and tone mapping; Image alignment; Noise suppression by image averaging; 4.3.4 Geometric transformations; 4.4 Camera Calibration; 4.5 Summary; References; Chapter 5: Crack detection; 5.1 Introduction; 5.2 Crack Detection Technique; 5.3 Performance Evaluation Under Various Conditions; 5.3.1 Test imagery; 5.3.2 Results; 5.4 Extracting Physical Properties of Detected Cracks |
| Notes |
5.5 Summary |
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Print version record |
| Subject |
Offshore structures-Inspection
|
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Underwater imaging systems.
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Offshore structures -- Inspection
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Offshore structures -- Inspection
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Underwater imaging systems
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| Form |
Electronic book
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| Author |
O'Byrne, Michael
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Schoefs, Franck
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Pakrashi, Vikram
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| ISBN |
9781351052566 |
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135105256X |
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