[gis_info] ASPRS\CaGIS\GLIS Online Seminars (GeoBytes) 2015 schedule

David Alvarez davidalvarez76 at gmail.com
Tue Dec 16 08:40:01 PST 2014

To register please go here http://www.asprs.org/GISD-Division/Online-Seminars.html <http://www.asprs.org/GISD-Division/Online-Seminars.html>

 Theses Online Seminars are FREE to the geospatial community
Date: 1/30/2015

Title: Relationship of and transformations between most common reference frames used in the U.S

Abstract: This presentation will cover the relationship of and transformations between the several geometric and vertical geodetic reference frames most commonly used in the United States. These include: The North American Datum of 1927 (NAD 27), the North American Datum of 1983 (NAD 83), the International Terrestrial Reference Frame (ITRF), the World Geodetic System of 1984 (WGS 84), the National Geodetic Vertical Datum of 1929 (NGVD 29) and the North American Vertical Datum of 1988 (NAVD). The program will specifically examine tools such as the gridded utilities NADCON and VERTCON developed by the National Geodetic Survey (NGS), as well as the commonly used 3-parameter abridged Molodensky transformations originally computed by the U.S. Defense Mapping Agency (DMA) and the more rigorous 14-parameter transformations supported by the NGS utility HTDP (Horizontal Time Dependent Positioning).

Date: 2/27/2015

Title: “Building Detection using EO, Lidar, and GEOBIA”

Abstract: “This seminar will discuss the detection of buildings using electro-optical (EO) and lidar data by applying Geographic Object-Based Image Analysis (GEOBIA) techniques.  Pre-processing, analysis, and post-processing are illustrated.  Accuracy assessment using a manually derived validation referent and calculation of performance metrics are also discussed.”

Date:  3/20/2015

Title: Volume visualization for lidar: Using voxels.

Abstract: This presentation will contain a brief overview of how airborne lidar data are currently collected, how errors and uncertainties are propagated through these systems, and how users typically convert this 3D remote sensing data into information.  We will discuss in detail a novel method of volume visualization, and how the voxel may be an excellent way to represent, visualize and model 3D information from lidar instruments, as compared to point and surface representations.

Date: 4/17/2015

Title: Using LiDAR to Study Forests

Abstract: Natural resource managers are increasingly using airborne LiDAR to study forests to conduct inventories, assess habitat, study fires and fuels, monitor changes, and study ecological processes.  This seminar will look at LiDAR’s strengths and weaknesses compared to other remote sensing methods to measure forests across landscapes.  We will cover how LiDAR measures forests and how managers can process LiDAR data to measure their forests. We will also cover how to work with a LiDAR vendor to acquire data for forest studies and how to relate LiDAR measures with forest measurements gathered on the ground.  In many cases, LiDAR data is gathered for non-forest studies (such as studying ground morphology);we will discuss how to use these common data sets to also study forests.

Date: 5/29/2015

Title: A Legal Framework for UAVs: How We Get From Here to There?

Abstract: UAVs offer tremendous potential to collect geospatial information in ways that will both replace and supplement existing collection capabilities. Unfortunately, trying to integrate broad commercial use of UAVs into the existing legal and policy framework is proving very challenging. This webinar will identify the major legal and policy issues that must be addressed and discuss what such a framework might look like in the future to accommodate commercial use of UAVs.

Date: 6/19/2015

Title: A Discussion of the USGS Base Lidar Specification, v. 2.0

Abstract: The U.S. Geological Survey (USGS) National Geospatial Program (NGP) Lidar Base Specification Version 1.0 was published in early 2012, and revised as Version 1.1 in 2014.  The notable revisions in version 1.1 were definitions for 3D Elevation Program (3DEP) Quality Levels, alignment with the American Society for Photogrammetry and Remote Sensing Positional Accuracy Standards for Digital Geospatial Data, updating the delivery format to LAS version 1.4, and clarification of several requirements.  The version 2.0 update will further align with new industry standards and best practices, define requirements for additional 3DEP products and services, and address new lidar technologies.

As a cooperative effort of the 3DEP and the National Hydrography Dataset (NHD) program, the NGP is developing a common data dictionary for both topographic and hydrologic breaklines. The goal is to enhance the integration of the NHD and 3DEP elevation products by enabling the use of common linework to the highest degree possible. This data dictionary is the most exciting update to the specification.  Although 3DEP lidar projects require only minimal hydrographic breaklines to be collected for hydro-flattening, those features will be consistently formatted and immediately usable by the NHD as well. This presentation will preview the changes from version 1.1 to version 2.0 and provide an opportunity for attendees to have questions about the specification answered.

David Alvarez
davidalvarez76 at gmail.com


Winston Churchill

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