Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Download Fabric Draping Of Lidar Data For Forest Canopy Visualization full books in PDF, epub, and Kindle. Read online Fabric Draping Of Lidar Data For Forest Canopy Visualization ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Author : Adnan H. Yusuf
Publisher :
ISBN 13 :
Total Pages : 428 pages
Book Rating : 4.:/5 (541 download)
Download or read book Fabric Draping of LiDAR Data for Forest Canopy Visualization written by Adnan H. Yusuf and published by . This book was released on 2003 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David Kao
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (93 download)
Download or read book Visualizing Distributions from Multi-return Lidar Data to Understand Forest Structure written by David Kao and published by . This book was released on 2004 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spatially distributed probability density functions (pdfs) are becoming relevant to the Earth scientists and ecologists because of stochastic models and new sensors that provide numerous realizations or data points per unit area. One source of these data is from multi-return airborne lidar, a type of laser that records multiple returns for each pulse of light sent towards the ground. Data from multi-return lidar is a vital tool in helping us understand the structure of forest canopies over large extents. This paper presents several new visualization tools that allow scientists to rapidly explore, interpret and discover characteristic distributions within the entire spatial field. The major contribution from-this work is a paradigm shift which allows ecologists to think of and analyze their data in terms of the distribution. This provides a way to reveal information on the modality and shape of the distribution previously not possible. The tools allow the scientists to depart from traditional parametric statistical analyses and to associate multimodal distribution characteristics to forest structures. Examples are given using data from High Island, southeast Alaska.
Author : Jihn-Fa Jan
Publisher :
ISBN 13 :
Total Pages : 15 pages
Book Rating : 4.:/5 (79 download)
Download or read book Comparison of Forest Canopy Height Derived Using Lidar Data and Aerial Photos written by Jihn-Fa Jan and published by . This book was released on 2005 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Christopher Felix Hansen
Publisher :
ISBN 13 :
Total Pages : 240 pages
Book Rating : 4.:/5 (18 download)
Download or read book Lidar Remote Sensing Of Forest Canopy Structure written by Christopher Felix Hansen and published by . This book was released on 2015 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Light detection and ranging (LiDAR) data can provide detailed information about three-dimensional forest horizontal and vertical structure that is important to forest productivity and wildlife habitat. Indeed, LiDAR data have been shown to provide accurate estimates to forest structural parameters and measures of higher trophic levels (e.g., avian abundance and diversity). However, links between forest structure and tree function have not been evaluated using LiDAR. This study was designed and scaled to assess the relationship of LiDAR to multiple aspects of forest structure and higher trophic levels (arthropod and bird populations), which included the ground-based collection of percent crown and understory closure, as well as arthropod and avian abundance and diversity data. Additional plot-based measures were added to assess the relationship of LiDAR to forest health and productivity. High-resolution discrete-return LiDAR data (flown summer of 2009) were acquired for the Hubbard Brook Experimental Forest (HBEF) in New Hampshire, USA. LiDAR data were classified into four canopy structural categories: 1) high crown and high understory closure, 2) high crown and low understory closure, 3) low crown and high understory closure, and 4) low crown and low understory closure. Nearby plots from each of the four LiDAR categories were grouped into "blocks" to assess the spatial consistency of data. Ground-based measures of forest canopy structure, site, stand and individual tree measures were collected on nine 50 m-plots from each LiDAR category (36 plots total), during summer of 2012. Analysis of variance was used to assess the relationships between LiDAR and a suite of tree function measures. Our results show the novel ability of LiDAR to assess forest health and productivity at the stand and individual tree level. We found significant correspondence between LiDAR categories and our ground-based measures of tree function, including xylem increment growth, foliar nutrition, crown health, and stand mortality. Furthermore, we found consistent reductions in xylem increment growth, decreases in foliar nutrition and crown health, and increases in stand mortality related to high understory closure. This suggests that LiDAR measures can reflect competitive interactions, not just among overstory trees for light, but also interactions between overstory trees and understory vegetation for resources other than light (e.g., nutrients). High-resolution LiDAR data show promise in the assessment of forest health and productivity related to tree function.
Author : Stewart He
Publisher :
ISBN 13 : 9781369616828
Total Pages : pages
Book Rating : 4.6/5 (168 download)
Download or read book Features for Learning and Visualizations of Forest LiDAR Data written by Stewart He and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Climate change is one of the biggest political, social, and scientific issues facing the global community today with the health of the world's forests playing a critical role. In order to monitor the status of forests around the world environment scientists often rely on two specialized technologies: LiDAR(LIght Detecting And Ranging) and hyperspectral imagery. LiDAR of various resolutions enable researchers to scan hundreds of square kilometers at a time creating massive and detailed point clouds. At the same time hyperspectral imagery captures how light is reflect off the same surfaces across several hundred light frequency bands. Visualizing and analysing these datasets has continuously challenged scientists in both forestry and computer science. In this dissertation, we continue this effort to understand and utilize this data. Visualizing point clouds of forest proves to be challenging due to the unique nature of the problem. Forests are porous, thus scanning a forest produces little to no surfaces or useful normals which many point cloud visualization techniques rely upon. Instead we present a method of rendering silhouettes around points providing very useful depth cues without relying on normals. We then implement this technique to run web browsers like Firefox of Chrome to reduce setup time and on Android devices using Google Cardboard to provide stereoscopic 3D. There is a wide range of useful properties that can be extracted from LiDAR and hyperspectral imagery. In this dissertation we focus on identifying species at tree level using shape features combined with hyperspectral features. We present two different sets of shape features. One uses a binning approach that we refer to as histogram shape descriptors. The other uses a set of complex basis functions called Zernike polynomials. We use these polynomials to generate a set of Zernike moments that are used as features. We compare how these shape descriptors work in a variety of tests meant to represent a range of species and forest types.
Author :
Publisher :
ISBN 13 :
Total Pages : 282 pages
Book Rating : 4.:/5 (931 download)
Download or read book Using Leaf-off LiDAR in Modeling Forest Canopy Structure and Assessing the Effect of Spatial Resolution in Landscape Analyses written by and published by . This book was released on 2014 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David Cowley
Publisher : Oxbow Books Limited
ISBN 13 : 9781842175163
Total Pages : 0 pages
Book Rating : 4.1/5 (751 download)
Download or read book Interpreting Archaeological Topography written by David Cowley and published by Oxbow Books Limited. This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Airborne Laser Scanning (ALS), or lidar, is an enormously important innovation for data collection and interpretation in archaeology. The application of archaeological 3D data deriving from sources including ALS, close-range photogrammetry and terrestrial and photogrammetric scanners has grown exponentially over the last decade. Such data present numerous possibilities and challenges, from ensuring that applications remain archaeologically relevant, to developing practices that integrate the manipulation and interrogation of complex digital datasets with the skills of archaeological observation and interpretation. This volume addresses the implications of multi-scaled topographic data for contemporary archaeological practice in a rapidly developing field, drawing on examples of ongoing projects and reflections on best practice. Twenty papers from across Europe explore the implications of these digital 3D datasets for the recording and interpretation of archaeological topography, whether at the landscape, site or artifact scale. The papers illustrate the variety of ways in which we engage with archaeological topography through 3D data, from discussions of its role in landscape archaeology, to issues of context and integration, and to the methodological challenges of processing, visualization and manipulation. Critical reflection on developing practice and implications for cultural resource management and research contextualize the case studies and applications, illustrating the diverse and evolving roles played by multi-scalar topographic data in contemporary archaeology.
Author : Eric Hardin
Publisher : Springer
ISBN 13 : 1493918354
Total Pages : 90 pages
Book Rating : 4.4/5 (939 download)
Download or read book GIS-based Analysis of Coastal Lidar Time-Series written by Eric Hardin and published by Springer. This book was released on 2014-09-12 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SpringerBrief presents the principles, methods, and workflows for processing and analyzing coastal LiDAR data time-series. Robust methods for computing high resolution digital elevation models (DEMs) are introduced as well as raster-based metrics for assessment of topographic change. An innovative approach to feature extraction and measurement of feature migration is followed by methods for estimating volume change and sand redistribution mapping. Simple methods for potential storm impacts and inundation pattern analysis are also covered, along with visualization techniques to support analysis of coastal terrain feature and surface dynamics. Hands-on examples in GRASS GIS and python scripts are provided for each type of analysis and visualization using public LiDAR data time-series. GIS-based Analysis of Coastal Lidar Time-Series is ideal for professors and researchers in GIS and earth sciences. Advanced-level students interested in computer applications and engineering will also find this brief a valuable resource.
Author : Robert E. Keane
Publisher : Springer
ISBN 13 : 3319090151
Total Pages : 195 pages
Book Rating : 4.3/5 (19 download)
Download or read book Wildland Fuel Fundamentals and Applications written by Robert E. Keane and published by Springer. This book was released on 2014-11-04 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new era in wildland fuel sciences is now evolving in such a way that fire scientists and managers need a comprehensive understanding of fuels ecology and science to fully understand fire effects and behavior on diverse ecosystem and landscape characteristics. This is a reference book on wildland fuel science; a book that describes fuels and their application in land management. There has never been a comprehensive book on wildland fuels; most wildland fuel information was put into wildland fire science and management books as separate chapters and sections. This book is the first to highlight wildland fuels and treat them as a natural resource rather than a fire behavior input. Moreover, there has never been a comprehensive description of fuels and their ecology, measurement, and description under one reference; most wildland fuel information is scattered across diverse and unrelated venues from combustion science to fire ecology to carbon dynamics. The literature and data for wildland fuel science has never been synthesized into one reference; most studies were done for diverse and unique objectives. This book is the first to link the disparate fields of ecology, wildland fire, and carbon to describe fuel science. This just deals with the science and ecology of wildland fuels, not fuels management. However, since expensive fuel treatments are being planned in fire dominated landscapes across the world to minimize fire damage to people, property and ecosystems, it is incredibly important that people understand wildland fuels to develop more effective fuel management activities.
Author : Lalit Kumar
Publisher : MDPI
ISBN 13 : 3038978841
Total Pages : 420 pages
Book Rating : 4.0/5 (389 download)
Download or read book Google Earth Engine Applications written by Lalit Kumar and published by MDPI. This book was released on 2019-04-23 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a rapidly changing world, there is an ever-increasing need to monitor the Earth’s resources and manage it sustainably for future generations. Earth observation from satellites is critical to provide information required for informed and timely decision making in this regard. Satellite-based earth observation has advanced rapidly over the last 50 years, and there is a plethora of satellite sensors imaging the Earth at finer spatial and spectral resolutions as well as high temporal resolutions. The amount of data available for any single location on the Earth is now at the petabyte-scale. An ever-increasing capacity and computing power is needed to handle such large datasets. The Google Earth Engine (GEE) is a cloud-based computing platform that was established by Google to support such data processing. This facility allows for the storage, processing and analysis of spatial data using centralized high-power computing resources, allowing scientists, researchers, hobbyists and anyone else interested in such fields to mine this data and understand the changes occurring on the Earth’s surface. This book presents research that applies the Google Earth Engine in mining, storing, retrieving and processing spatial data for a variety of applications that include vegetation monitoring, cropland mapping, ecosystem assessment, and gross primary productivity, among others. Datasets used range from coarse spatial resolution data, such as MODIS, to medium resolution datasets (Worldview -2), and the studies cover the entire globe at varying spatial and temporal scales.
Author : Fernando Carvajal-Ramírez
Publisher : MDPI
ISBN 13 : 3036514546
Total Pages : 257 pages
Book Rating : 4.0/5 (365 download)
Download or read book UAV Photogrammetry and Remote Sensing written by Fernando Carvajal-Ramírez and published by MDPI. This book was released on 2021-09-06 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: The concept of remote sensing as a way of capturing information from an object without making contact with it has, until recently, been exclusively focused on the use of Earth observation satellites. The emergence of unmanned aerial vehicles (UAV) with Global Navigation Satellite System (GNSS) controlled navigation and sensor-carrying capabilities has increased the number of publications related to new remote sensing from much closer distances. Previous knowledge about the behavior of the Earth's surface under the incidence different wavelengths of energy has been successfully applied to a large amount of data recorded from UAVs, thereby increasing the special and temporal resolution of the products obtained. More specifically, the ability of UAVs to be positioned in the air at pre-programmed coordinate points; to track flight paths; and in any case, to record the coordinates of the sensor position at the time of the shot and at the pitch, yaw, and roll angles have opened an interesting field of applications for low-altitude aerial photogrammetry, known as UAV photogrammetry. In addition, photogrammetric data processing has been improved thanks to the combination of new algorithms, e.g., structure from motion (SfM), which solves the collinearity equations without the need for any control point, producing a cloud of points referenced to an arbitrary coordinate system and a full camera calibration, and the multi-view stereopsis (MVS) algorithm, which applies an expanding procedure of sparse set of matched keypoints in order to obtain a dense point cloud. The set of technical advances described above allows for geometric modeling of terrain surfaces with high accuracy, minimizing the need for topographic campaigns for georeferencing of such products. This Special Issue aims to compile some applications realized thanks to the synergies established between new remote sensing from close distances and UAV photogrammetry.
Author : David Francis Maune
Publisher : American Society for Photogrammetry & Remote Sensing
ISBN 13 :
Total Pages : 688 pages
Book Rating : 4.:/5 (319 download)
Download or read book Digital Elevation Model Technologies and Applications written by David Francis Maune and published by American Society for Photogrammetry & Remote Sensing. This book was released on 2007 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt: This DE Users Manual is designed to help potential users of digital elevation data understand and articulate their requirements in a way that their expectations are satisfied. if you have a dream that DEM's can help you do a better job, or you need to know more about DEM technologies and applications then this manual is for you.
Author : Liam Young
Publisher :
ISBN 13 : 9780648685876
Total Pages : pages
Book Rating : 4.6/5 (858 download)
Download or read book Planet City written by Liam Young and published by . This book was released on 2020-12-17 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Planet City is a speculation of what might happen if the world collapsed into a new home for 10 billion people, allowing the rest of the world to return to a global wilderness. It is both an extraordinary image of tomorrow and an urgent examination of the environmental questions that face us today.
Author : Ricardo Díaz-Delgado
Publisher : MDPI
ISBN 13 : 3039219804
Total Pages : 176 pages
Book Rating : 4.0/5 (392 download)
Download or read book Drones for Biodiversity Conservation and Ecological Monitoring written by Ricardo Díaz-Delgado and published by MDPI. This book was released on 2019-12-18 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unmanned aerial vehicles (UAV) have already become an affordable and cost-efficient tool to quickly map a targeted area for many emerging applications in the arena of ecological monitoring and biodiversity conservation. Managers, owners, companies, and scientists are using professional drones equipped with high-resolution visible, multispectral, or thermal cameras to assess the state of ecosystems, the effect of disturbances, or the dynamics and changes within biological communities inter alia. We are now at a tipping point on the use of drones for these type of applications over natural areas. UAV missions are increasing but most of them are testing applicability. It is time now to move to frequent revisiting missions, aiding in the retrieval of important biophysical parameters in ecosystems or mapping species distributions. This Special Issue shows UAV applications contributing to a better understanding of biodiversity and ecosystem status, threats, changes, and trends. It documents the enhancement of knowledge in ecological integrity parameters mapping, long-term ecological monitoring based on drones, mapping of alien species spread and distribution, upscaling ecological variables from drone to satellite images: methods and approaches, rapid risk and disturbance assessment using drones, mapping albedo with UAVs, wildlife tracking, bird colony and chimpanzee nest mapping, habitat mapping and monitoring, and a review on drones for conservation in protected areas.
Author : Lucas L. F. Janssen
Publisher :
ISBN 13 : 9789061641834
Total Pages : 170 pages
Book Rating : 4.6/5 (418 download)
Download or read book Principles of Remote Sensing written by Lucas L. F. Janssen and published by . This book was released on 2000 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mario A. Gomarasca
Publisher : Springer Science & Business Media
ISBN 13 : 1402090145
Total Pages : 690 pages
Book Rating : 4.4/5 (2 download)
Download or read book Basics of Geomatics written by Mario A. Gomarasca and published by Springer Science & Business Media. This book was released on 2009-09-18 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geomatics is a neologism, the use of which is becoming increasingly widespread, even if it is not still universally accepted. It includes several disciplines and te- niques for the study of the Earth’s surface and its environments, and computer science plays a decisive role. A more meaningful and appropriate expression is G- spatial Information or GeoInformation. Geo-spatial Information embeds topography in its more modern forms (measurements with electronic instrumentation, sophisticated techniques of data analysis and network compensation, global satellite positioning techniques, laser scanning, etc.), analytical and digital photogrammetry, satellite and airborne remote sensing, numerical cartography, geographical information systems, decision support systems, WebGIS, etc. These specialized elds are intimately interrelated in terms of both the basic science and the results pursued: rigid separation does not allow us to discover several common aspects and the fundamental importance assumed in a search for solutions in the complex survey context. The objective pursued by Mario A. Gomarasca, one that is only apparently modest, is to publish an integrated text on the surveying theme, containing simple and comprehensible concepts relevant to experts in Geo-spatial Information and/or speci cally in one of the disciplines that compose it. At the same time, the book is rigorous and synthetic, describing with precision the main instruments and methods connected to the multiple techniques available today.
Author : Eduard Imhof
Publisher : ESRI, Inc.
ISBN 13 : 1589480260
Total Pages : 438 pages
Book Rating : 4.5/5 (894 download)
Download or read book Cartographic Relief Presentation written by Eduard Imhof and published by ESRI, Inc.. This book was released on 2007 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This new edition of Cartographic Relief Presentation was edited for clarity and consistency but preserves Imhof's insightful commentary and analytical style. Color maps, aerial photographs, and instructive illustrations are faithfully reproduced. The book offers guidelines for properly rendering terrain in maps of all types and scales whether drawn by traditional means or with the aid of a computer. Cartographic Relief Presentation was among the essential mapping and graphical design books of the twentieth century. Its continuing relevance for the twenty-first century is assured with this publication."--BOOK JACKET.
