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Remote Sensing Image Fusion A Practical Guide
Remote Sensing Image Fusion A Practical Guide Christine Pohl John van Genderen
CRC Press Taylor & Francis Group 6000 Broken Sound Parkway NW, Suite 300 Boca Raton, FL 33487-2742 © 2017 by Taylor & Francis Group, LLC CRC Press is an imprint of Taylor & Francis Group, an Informa business No claim to original U.S. Government works Printed on acid-free paper Version Date: 20160609 International Standard Book Number-13: 978-1-4987-3002-0 (Hardback) This book contains information obtained from authentic and highly regarded sources. Reasonable efforts have been made to publish reliable data and information, but the author and publisher cannot assume responsibility for the validity of all materials or the consequences of their use. The authors and publishers have attempted to trace the copyright holders of all material reproduced in this publication and apologize to copyright holders if permission to publish in this form has not been obtained. If any copyright material has not been acknowledged please write and let us know so we may rectify in any future reprint. Except as permitted under U.S. Copyright Law, no part of this book may be reprinted, reproduced, transmit- ted, or utilized in any form by any electronic, mechanical, or other means, now known or hereafter invented, including photocopying, microfilming, and recording, or in any information storage or retrieval system, without written permission from the publishers. For permission to photocopy or use material electronically from this work, please access www.copyright. com (http://www.copyright.com/) or contact the Copyright Clearance Center, Inc. (CCC), 222 Rosewood Drive, Danvers, MA 01923, 978-750-8400. CCC is a not-for-profit organization that provides licenses and registration for a variety of users. For organizations that have been granted a photocopy license by the CCC, a separate system of payment has been arranged. Trademark Notice: Product or corporate names may be trademarks or registered trademarks, and are used only for identification and explanation without intent to infringe. Library of Congress Cataloging‑in‑Publication Data Names: Pohl, Christine, 1966- author. | Van Genderen, J. L. (John L.) author. Title: Remote sensing image fusion : a practical guide / Christine Pohl and John Van Genderen. Description: Boca Raton, FL : Taylor & Francis, 2016. | Includes bibliographical references and index. Identifiers: LCCN 2016013861 | ISBN 9781498730020 Subjects: LCSH: Remote sensing--Handbooks, manuals, etc. | Image processing--Handbooks, manuals, etc. Classification: LCC G70.4 .P65 2016 | DDC 621.36/78028566--dc23 LC record available at https://lccn.loc.gov/2016013861 Visit the Taylor & Francis Web site at http://www.taylorandfrancis.com and the CRC Press Web site at http://www.crcpress.com
Contents Foreword .................................................................................................................xi Preface ................................................................................................................... xiii Acknowledgments ................................................................................................xv Authors ................................................................................................................ xvii Acronyms ............................................................................................................. xix 1. Introduction .....................................................................................................1 1.1 Outline of the Book ...............................................................................1 1.2 Remote Sensing .....................................................................................3 1.3 Multi-Sensor Data .................................................................................5 1.3.1 Optical Remote Sensing ..........................................................7 1.3.2 Radar Remote Sensing .......................................................... 14 1.3.3 Hyperspectral Remote Sensing ........................................... 19 1.3.4 Thermal Remote Sensing ...................................................... 24 1.3.5 LiDAR ......................................................................................29 Image and Data Fusion ...................................................................... 32 1.4.1 Objectives of Image Fusion...................................................34 1.4.2 Types of Fusion ......................................................................36 1.4.3 Benefits .................................................................................... 39 1.4.4 Limitations .............................................................................. 41 1.5 Definitions and Terminology for This Book ................................... 41 1.5.1 Remote Sensing Images ........................................................42 1.5.2 Resolution ...............................................................................43 1.6 Summary ..............................................................................................46 References .......................................................................................................46 1.4 2. Fusion Levels ................................................................................................. 51 2.1 Data Fusion .......................................................................................... 52 Fusion in Remote Sensing ..................................................................53 2.2 2.3 Subpixel Level ......................................................................................56 2.4 Pixel Level ............................................................................................ 57 2.5 Feature Level........................................................................................59 2.6 Decision Level...................................................................................... 62 2.7 Hybrid-Level Fusion ...........................................................................64 2.8 Summary .............................................................................................. 67 References ....................................................................................................... 67 3. Preprocessing ................................................................................................71 3.1 Data Selection ......................................................................................71 3.2 General Workflow ...............................................................................73 v
vi 3.3 Contents Sensor-Specific Corrections ............................................................... 74 3.3.1 Radiometric Distortions in VIR Data and Their Corrections .............................................................................. 74 3.3.2 Radiometric Corrections of SAR Images ............................ 76 3.3.2.1 Multi-Look Processing ...........................................77 3.3.2.2 Spatial Averaging Method ....................................77 3.3.2.3 Filtering Techniques ..............................................77 3.3.2.4 Antenna Pattern ..................................................... 78 3.3.2.5 16-Bit to 8-Bit Data Conversion .............................79 3.3.2.6 Calibration ...............................................................79 3.3.3 Geometric Corrections ..........................................................80 3.3.4 Geometric Distortions in VIR Imagery ..............................80 3.3.5 Geometric Effects in SAR Data ............................................ 81 3.4 Geometric Corrections .......................................................................82 3.4.1 Terms .......................................................................................82 3.4.2 Geometric Models ..................................................................83 3.4.2.1 Polynomial Rectification .......................................84 3.4.2.2 Sensor Model ..........................................................85 3.4.3 Resampling .............................................................................86 Image Enhancement ...........................................................................88 3.5.1 Spatial Filters ..........................................................................88 3.5.2 Frequency Domain ................................................................89 3.5.3 Histogram Matching .............................................................89 3.6 Summary ..............................................................................................89 References .......................................................................................................90 3.5 4. Fusion Techniques ........................................................................................93 4.1 Categorizations of Image Fusion Techniques .................................95 4.2 Role of Color in Image Fusion ...........................................................96 4.3 Component Substitutions ..................................................................99 4.3.1 Intensity Hue Saturation Transform ................................. 101 4.3.2 Principal Component Substitution .................................... 105 4.3.3 Gram–Schmidt Transform .................................................. 109 4.4 Numerical Methods .......................................................................... 112 4.4.1 Sum ........................................................................................ 112 4.4.2 Multiplication ....................................................................... 113 4.4.3 Subtractive Resolution Merge and Ratioing .................... 113 4.4.4 Brovey Transform ................................................................ 115 4.4.5 Modulation-Based Techniques .......................................... 116 4.4.6 Color Normalized Spectral Sharpening ........................... 116 4.4.7 High-Pass Filtering .............................................................. 117 Statistical Image Fusion ................................................................... 119 4.5.1 Spatially Adaptive Image Fusion....................................... 119 4.5.2 Regression Variable Substitution ....................................... 120 4.5
Contents vii 4.5.3 Principal Component Analysis .......................................... 120 4.5.4 Minimum Mean-Square Error Approach ........................ 121 4.5.5 FuzeGoTM ............................................................................... 121 4.5.6 Regression Fusion ................................................................ 121 4.6 Multiresolution Approaches ............................................................ 123 4.6.1 Principles ............................................................................... 124 4.6.2 Fusion Process ...................................................................... 125 4.6.3 Advances in MRA Fusion ................................................... 125 4.7 Hybrid Techniques ............................................................................ 127 4.7.1 Ehlers Fusion ........................................................................ 127 4.7.2 IHS–BT Fusion ...................................................................... 127 4.7.3 Wavelet-IHS Fusion ............................................................. 129 4.7.4 Wavelet-PCA Fusion ............................................................ 129 4.7.5 Modified BT-Wavelet Fusion .............................................. 130 4.7.6 Laplacian Filtering and Multiple Regression ................... 131 4.8 Other Fusion Techniques ................................................................. 132 4.8.1 Classification ......................................................................... 133 4.8.2 Spatial and Temporal Data Fusion Approaches .............. 134 Selection Approach ........................................................................... 136 4.9.1 VIR/SAR ................................................................................ 137 4.9.2 Feature Extraction ................................................................ 138 4.9.3 Optimum Index Factor ........................................................ 138 4.10 Comparison and Popularity of Fusion Techniques ..................... 139 4.11 Summary ............................................................................................ 141 References ..................................................................................................... 142 4.9 5. Quality Assessment ................................................................................... 151 5.1 Overview ............................................................................................ 151 5.2 Image Quality Parameters ............................................................... 154 5.3 Acceptable Quality Measures in RSIF ........................................... 155 5.3.1 Mean Bias .............................................................................. 155 5.3.2 Mean Square Error............................................................... 156 5.3.3 Root Mean Square Error ..................................................... 156 5.3.4 Normalized Root Mean Square Error ............................... 156 5.3.5 Correlation Coefficient ........................................................ 156 5.3.6 Universal Image Quality Index ......................................... 157 5.3.7 UIQI for Four Band Imagery .............................................. 157 5.3.8 Spectral Angle Mapper ....................................................... 158 5.3.9 Relative Average Spectral Error ......................................... 158 5.3.10 Relative Dimensionless Global Error of Synthesis .......... 159 5.3.11 Structure Similarity Index Metric ..................................... 159 5.4 RSIF Quality Assessment Protocols ............................................... 159 5.4.1 Wald’s Protocol ..................................................................... 160 5.4.2 Zhou’s Protocol ..................................................................... 160
viii Contents 5.4.3 Quality with No Reference Protocol ................................. 161 5.4.4 Khan’s Protocol..................................................................... 162 5.5 Palubinskas’ Generic Framework for Pansharpening Quality Assessment .......................................................................... 162 5.6 Value and Requirements for Visual Evaluation ............................ 165 5.7 Summary ............................................................................................ 167 References ..................................................................................................... 167 6. Applications ................................................................................................. 171 6.1 Urban Studies .................................................................................... 172 6.1.1 Global Urban Extent Mapping ........................................... 173 6.1.2 Local Urban Mapping ......................................................... 174 6.1.3 Outlook .................................................................................. 176 6.2 Agriculture ......................................................................................... 178 6.2.1 Mapping Growth Cycles, Plant Health, and Cropland Extent ................................................................... 178 6.2.2 Yield Prediction .................................................................... 180 6.3 Land Use/Land Cover Mapping..................................................... 181 6.4 Change Detection .............................................................................. 183 6.4.1 Fusion Techniques in Change Detection .......................... 185 6.4.2 Examples of Change Detection .......................................... 185 6.5 Geology ............................................................................................... 186 6.6 Vegetation Monitoring ..................................................................... 190 6.6.1 Spatial and Temporal Data Fusion Approach .................. 190 6.6.2 Multimodal Classification .................................................. 192 6.7 Forest Monitoring ............................................................................. 194 6.8 Natural Hazards and Disasters ...................................................... 195 6.8.1 Floods .................................................................................... 197 6.8.2 Volcano Eruptions ................................................................ 198 6.8.3 Landslides ............................................................................. 199 6.9 Coastal Zone Monitoring .................................................................200 6.10 Coal Fire Monitoring ........................................................................203 6.11 Detection of Landmines and Minefields ....................................... 207 6.12 Oceanography .................................................................................... 212 6.13 Security and Defense ........................................................................ 213 6.14 Missing Information Reconstruction ............................................. 214 6.15 Other Applications ............................................................................ 215 6.16 Summary ............................................................................................ 217 References .....................................................................................................220 7. Conclusions and Trends ............................................................................233 7.1 Challenges ..........................................................................................233 7.2 Trends .................................................................................................234 7.3 Data Mining .......................................................................................236
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