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Margarita N. Favorskaya - Handbook on Advances in Remote Sensing and Geographic Information Systems: Paradigms and Applications in Forest Landscape Modeling

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Margarita N. Favorskaya Handbook on Advances in Remote Sensing and Geographic Information Systems: Paradigms and Applications in Forest Landscape Modeling
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This book presents the latest advances in remote-sensing and geographic information systems and applications. It is divided into four parts, focusing on Airborne Light Detection and Ranging (LiDAR) and Optical Measurements of Forests; Individual Tree Modelling; Landscape Scene Modelling; and Forest Eco-system Modelling. Given the scope of its coverage, the book offers a valuable resource for students, researchers, practitioners, and educators interested in remote sensing and geographic information systems and applications.

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Springer International Publishing AG 2017
Margarita N. Favorskaya and Lakhmi C. Jain Handbook on Advances in Remote Sensing and Geographic Information Systems Intelligent Systems Reference Library 10.1007/978-3-319-52308-8_1
1. Innovations in Remote Sensing of Forests
Margarita N. Favorskaya 1 and Lakhmi C. Jain 2, 3, 4
(1)
Institute of Informatics and Telecommunications, Siberian State Aerospace University, Krasnoyarsk, Russia
(2)
Faculty of Education, Science, Technology and Mathematics, University of Canberra, Canberra, Australia
(3)
Faculty of Science and Technology, Data Science Institute, Bournemouth University, Poole, UK
(4)
KES International, Leeds, West Yorkshire, UK
Lakhmi C. Jain
Email:
Abstract
Nowadays, a remote sensing of forests is represented by three conventional types of shooting, such as the spaceborne, airborne, and terrestrial. Recently additional studies, such as the Unmanned Airborne Vehicles (UAVs) laser scanning including nano-UAV, micro-UAV, and mini-UAV (as a part of the airborne laser scanning) and the mobile laser scanning and hand-held mobile laser scanning (as a part of the terrestrial laser scanning), became available. Each type has own purposes and pros and cons. A fusion of such scaled data in a single software tool is the innovative task with a promising future. However, a process of fusion is not trivial because of different scale representation of data. Also, a wide coverage of areas leads to difficulties in the big data processing. The material of the book is mainly based on the airborne and terrestrial algorithms.
Keywords
Remote sensing Forest inventory Airborne laser scanning UAV laser scanning Terrestrial laser scanning Mobile laser scanning Imaging spectroscopy
1.1 Introduction
Forests covering 31% of the total Earths surface have a determining significance in the global carbon cycle and the terrestrial primary productivity []. The convection processes between atmosphere, vegetation and soil cannot be understood without persistent and durable observation and study of forest resources. Many difficult issues appear in this way. The current book is a contribution in remote sensing investigations including processing, modelling, and visualization based on the recent achievements in digital image processing.
The short historical review of airborne laser scanning as an excellent means of forest monitoring was represented by Hyypp et al. [.
Table 1.1
The stages of airborne laser scanning
Dates
Achievements in airborne laser scanning
19601970
Airborne laser ranging/profiling with experiments for bathymetric and hydrographic applications. The basics of biomass evaluation using laser measurements were founded at that time
19801990
Use of laser scanners (instead of laser profilers), the Global Positioning System (GPS) combined with the Integrated Navigation System (INS). The attempts of terrain modelling and individual tree elevation based on height and volume estimations had been started
2000up to date
Use of various recording devices such as laser scanners, high resolution digital camera, multispectral camera, stereo camera, small-footprint scanners, terrestrial laser scanners, full-waveform digitizing LiDAR systems, and so forth. Measurements of forest growth, detection of aging, damaged, and harvested trees are based on data fusion techniques
Table 1.2
The stages of algorithms development
Dates
Achievements in algorithm development
1990up to date
Development of the digital terrain modelling, progressive Triangular Irregular Network (TIN) densification methods, sparse TIN methods, a slope-based filtering techniques, methods of canopy height estimation, methods of individual tree estimation, geometrical models of stand heights
2000up to date
Methods for definition of structural characteristics of forest stands (in relation to carbon content and biodiversity issues), histogram thresholding methods for separation of different tree storeys, classification/recognition of tree species, integration methods for simultaneous laser and aerial image acquisition, methods considering the impact of a whole spectrum of ecological factors including a human intervention, verification methods
The use of Light Detection And Ranging (LiDAR) in recent years contributed in study of the forest structural parameters, such as the height, shape, and foliage distribution of the canopy, and especially the individual tree [].
The main goal of forest monitoring is to extract the forest variables. These methods have been divided into two categories: the area-based inventory methods (done at stand and plot level) and the tree-based inventory methods (done at individual tree level). Both categories utilize the statistical and image processing methods. However, the area-based inventory methods, forming the Digital Terrain Model (DTM), the Digital Evaluation Model (DEM), and the Digital Surface Models (DSM), often use the regression or discriminant analysis. The image processing techniques help to extract the neighborhood information of point clouds and pixels of the DSMs more efficiently. The tree-based inventory methods imply to compute the individual physical features, such as the shape and volume of crowns, trunk diameters at the Diameter-at-Breast Height (DBH), tree heights, and so on. In this case, the image processing techniques prevail on the statistical methods. Objectively, the individual tree based inventories provide more accurate estimations. In general, the task of forest modelling includes the stages mentioned below:
  • 3D LiDAR and 2D hyperspectral/multispectral/digital photography data processing in order to simulate canopy and individual tree models for evaluation of woodland parameters.
  • Forest modelling on a point of view from the Earths surface using 3D LiDAR and 2D hyperspectral/multispectral/digital photography data as a software tool of assistance for forest appraisers.
  • Improvement of 3D visualization of individual trees, employing the achievements of digital image processing for forest inventory.
  • Improvement of 3D visualization of landscape (forest part), using the environment approximate models that are time-based on the life-saving resources (water, light, minerals, and location balances, also weather and climate conditions) for forest monitoring.
The existing tree modelling methods can be classified into two major categories, such as the synthesis-based and the reconstruction-based. Synthesis-based methods are focused on synthesizing tree geometry from heuristics or knowledge, such as the botanic rules, shape grammar, physical simulations, or probabilistic optimization. Rule-based methods assume that the growth of trees follows specific patterns. Usually they use grammar of the L-systems or its multiple modifications to construct the trees species. In contrast, the reconstruction-based methods aim to recover 3D tree geometry that would be closed to ground-truth data received from laser scanner. As a result, very high-quality 3D models can be produced. Fusion of laser scanning data and modelling data is a cornerstone idea of this book.
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