LAStools – de la DSM la DTM

Slides:



Advertisements
Similar presentations
State of Indiana Orthophotography and LiDAR Program
Advertisements

LAS format and processing DTMs from tins and local binning Arrowsmith.
NUMERICAL TERRAIN MODEL IN SPATIAL PLANNING GRID DATA FORMAT.
Global Mapper: The Swiss Army Knife For GIS!
Esri UC 2014 | Technical Workshop | ArcGIS 3D Analyst - Lidar Applications Clayton Crawford.
Zachary Fancher Last updated 12/15/2012. Background Regulatory Division responsible for making jurisdictional determinations on “Waters of the U.S”, as.
Brian S. Keiling Program Head – Forest Management Dabney S.Lancaster Community College.
From Topographic Maps to Digital Elevation Models Daniel Sheehan DUE Office of Educational Innovation & Technology Anne Graham MIT Libraries.
Digital Topography FE Lecture 2a. From Last Week: Grid the roads and stands using various grid sizes. Overlay and comment. Grid the stands, roads,
Comparison of LIDAR Derived Data to Traditional Photogrammetric Mapping David Veneziano Dr. Reginald Souleyrette Dr. Shauna Hallmark GIS-T 2002 August.
IGIC - Indiana GIS LiDAR Applications for Surveyors 4. LiDAR Software Resources.
Esri International User Conference | San Diego, CA Technical Workshops | Lidar Solutions in ArcGIS Clayton Crawford July 2011.
Spatial Analysis University of Maryland, College Park 2013.
Accessing LIDAR GIS day 2012 Larry Theller ABE Purdue University.
UNDERSTANDING LIDAR LIGHT DETECTION AND RANGING LIDAR is a remote sensing technique that can measure the distance to objects on and above the ground surface.
Terrain Mapping and Analysis
Spatial data models (types)
Introduction to Rasters In ArcGIS 9.2. What can you do with Rasters Lots….
Lidar and GIS Applications and Examples
NR 422: Raster Analysis Jim Graham Spring Continuous vs. Categorized Continuous: –Like photographs –Satellite and aerial photos –Best for analysis.
.LAS files (Log ASCII Standard) Not useable directly in ArcGIS A single X-Y position can have multiple Z values Must be converted to MultiPoint file.
Advanced GIS Using ESRI ArcGIS 9.3 3D Analyst part 2.
LiDAR Contour Options Randy Mayden, VP Business Development
Using free and/or open source tools to build workflows to manipulate and process LiDAR data Christopher Crosby.
Tutorial 1– Visualization of Point Cloud Data Introduction to the Acquisition, Visualization and Interpretation of lidar-derived Digital Elevation Models.
Copyright © 2006 by Maribeth H. Price 1-1 How does GIS work? Data storage The ArcGIS Interface.
LIDAR – Light Detection And Ranging San Diego State University.
Adding the third dimension In high relief areas variables such as altitude, aspect and slope strongly influence both human and physical environments –a.
Spatial Analyst/Digital Soil Mapping Workshop Terrain Analysis Applications Using Digital Elevation Data Dwain Daniels Central National Technology Support.
What is GIS? GIS is an integrated system used to view and manage information about geographic places, analyze spatial relationships, and model spatial.
Lab 2: GIS Data Models Yingjie Hu. Objectives Understanding GIS data models Manipulating the data models supported in ArcGIS.
R I T Rochester Institute of Technology Geometric Scene Reconstruction Using 3-D Point Cloud Data Feng Li and Steve Lach Advanced Digital Image Processing.
Management and Use of LiDAR-Derived Information Elizabeth Cook USDA-NRCS Columbia, MO.
LIDAR Originally Delivered to AIMS as: –LAS files –Intensity Images.
Contour Mapping from LiDAR Presented by: Dave Bullington Surdex Corporation St. Louis, MO
Surface Analysis Tools. Lesson 7 overview  Topographic data  Sources  Uses  Topographic analysis  Hillshade  Visibility  Contours  Slope, aspect,
Copyright - Spatial Systems Associates, Inc
Best Practices for Managing and Serving Lidar and Elevation Data Cody Benkelman.
Indiana GIS LiDAR Applications
A LiDAR Processing Toolkit
Lidar and GIS: Applications and Examples
Week Thirteen Light Detection and Ranging (LIDAR)
What’s new in FUSION? Bob McGaughey
Rasters Peter Fox – based on materials from Steve Signell
DIGITAL ELEVATION MODEL (DEM), ITS DERIVATIVES & APPLICATIONS
Spatial Models – Raster Stacy Bogan
Using LiDAR Data within Smallworld
Terrain modelling: the basics
Terrain Represent the “Surface” of the Earth
Light Detection & Ranging (LiDAR) – Enhanced Forest Inventory
Lidar Image Processing
WindNinja Model Domain/Objective
FUSION—AreaProcessor (AP)
Bob McGaughey USDA Forest Service – Pacific Northwest Research Station
Digital Surface Modeling Using Stereo Imagery
نقشه های توپوگرافی و مدل سازی توپوگرافی زمین
Spatial Analysis: Raster
Digital Elevation Models (DEM) Digital Terrain Models (DTM) / Digital Surface Models (DSM) Brief Review Applications in image processing: Inclusion in.
Lab 2: GIS Data Models Yingjie Hu. Objectives Understanding GIS data models Manipulating the data models supported in ArcGIS.
Statistical surfaces: DEM’s
Spatial Analysis & Modeling
Geospatial Data models
Surface Analysis Tools
Warm-up slide Jan : end of The World: Dubai island development sinks back into sea - financial crisis.
Surface Operations Examples
Platforma FREEWAT Module și Instrumente
Raster Data Analysis.
Spatial Analysis: Raster
The Challenge of Community LiDAR data
Geoprocessing Sample Tools for Lidar
Presentation transcript:

LAStools – de la DSM la DTM Corina-Maria Ristea Cristina Andra Vrînceanu Ștefania-Alexandra Oancea Seminar "Soluții libere open source pentru prelucrarea și reprezentarea datelor geospațiale" 15-16 aprilie 2016 - Cluj-Napoca

Definiții LAStools – o serie de instrumente pentru vizualizarea, procesarea și analiza fișierelor de tip .las (precum date LiDAR sau nor de puncte 3D rezultat în urma procesării imaginilor aeriene). http://rapidlasso.com/lastools/ DSM (Digital Surface Model) – modelul digital al suprafeței DTM (Digital Terrain Model) – modelul digital al terenului DSM DTM Sursa foto: www.simactive.com

Date LiDAR vs. Nor de puncte 3D

LAStools

Configurare QGIS Processing  Options  Providers  Tools for LiDAR data

Articol DSM  DTM

Flux de lucru – obţinere DTM

Flux de lucru pentru obținerea DTM INPUT - nor de puncte/date LiDAR: .las/.laz 1. LASSORT - output: .las/.laz 2. LASGROUND 3. LAS2DEM -output: .tiff/alte formate

1. Lassort Parametri sorts the points of a LAS file into z-order arranged cells of a square quad tree and saves them into LAS or LAZ format. This is useful to bucket together returns from different swaths or to merge first and last returns that were stored in separate files.

2. Lasground Parametri is a tool for bare-earth extraction: it classifies the LiDAR points into ground points (class = 2) and non-ground points (class = 1). The tools works very well in natural environments such as mountains, forests, fields, hills, and even steep terrain but also gives excellent results in towns or cities.

Rezultat lasground

3. Las2dem Parametri is a tool that triangulates LIDAR points from the LAS/LAZ format (or some ASCII format) into a temporary TIN and then rasters the TIN to create a DEM. The tool can either raster the ‘-elevation’, the ‘-slope’, the ‘-intensity’, the ‘-rgb’ values, or a ‘-hillshade’ or ‘-gray’ or ‘-false’ coloring. The output is either in BIL, ASC, IMG, FLT, XYZ, DTM, TIF, PNG or JPG format.

Interfaţă LAStools

Linii de comandă

Rezultate

DSM Test Elveția DTM

Zonă de test LAStools DSM DTM

Zonă de test LAStools DSM DTM

Test Bâscenii de Sus, Buzău DSM Test Bâscenii de Sus, Buzău DTM

Flux Input nor de puncte DSM Output lasground DTM

Întrebări…

Vă mulțumim!