Earth Observation Data and Image Processing for High-level Humanitarian Support

An Efficient Approach for Estimating Refugee Camp Populations
Over the past decade, the world has witnessed a steady increase in the number of people forced away from their homes by natural disasters or political unrest. They often end up in camps that hold tens of thousands of refugees. The camps are supported by non-governmental organisations (NGOs) that provide food, shelter and medical assistance. To manage their operations, NGOs and other agencies need to know how many people are in a given camp. This article explains how a combination of high-resolution satellite Earth observation data and image processing software provides an efficient approach for estimating camp populations. The refugee... (read more)
2018-05-09 09:27:45

Applanix Releases POSPac AIR 4.3 Software for Airborne Data Post-processing

Applanix (Canada) has announced the release of POSPac AIR 4.3, the latest update to its airborne data post-processing software. Developed for the aerial survey and remote sensing industry, the customided software incorporates a series of application-specific tools for systems using the company’s POS AV (Position and Orientation System, Airborne Vehicles) Direct Georeferencing technology. Application-specific toolsets include Photogrammetry Tools for system calibration and quality control of Direct Georeferencing for frame cameras, DSS Tools for mission management and image development of DSS imagery, and SAR Processing Tools for use with Synthetic Aperture Radar. New to the Photogrammetry Tools is an Automatic Tie-point... (read more)
2005-12-14 12:00:00

Point Clouds (2)

Survey of Processing Software
Collecting and processing point clouds has been trending topic in the geospatial sector over the past few years. This article focuses on point cloud processing software aimed at creating DEMs or DSMs and products derived from these. The first article of this diptych, originally published in the June 2014 issue of GIM International, focused on functionalities. This survey starts with the software of Terrasolid, which is based in Helsinki, Finland. It will then focus on three systems listed on the Geo-matching.com website, subsequently continuing with software which operates independently from the particular sensors, to then arrive at proprietary systems. It... (read more)
2014-07-25 10:02:27

Point Clouds (1)

The Functionalities of Processing Software
Whether based on Lidar, photogrammetry, radar, sonar or other remote sensors, systems for geodata acquisition create millions or even billions of 3D points. To be useful, the data needs to be organised, combined, georeferenced, measured and analysed, and that in turn requires software. This article first defines what point clouds are and identifies their sources. It then goes on to examine software functionalities such as visualisation and editing. The July 2014 edition of GIM International will be a themed issue covering collection and processing of point clouds and hence will include a selection of the many software packages currently available.... (read more)
2014-06-06 03:29:52

Data Lineage

An Essential Step in Data Processing
As William Pollard said, "Information is a source of learning. But unless it is organised, processed, and available to the right people in a format for decision making, it is a burden, not a benefit." In any project it is essential to distribute information to all parties involved. Reproducible project process information is essential to all participants at every working level. Information should be organised and presented in a standardised, easy-to-use way, possible using data lineage. View Larger Map Project information is expected to contain answers to essential questions such as: how, what, when, where, why and who? The answers... (read more)
2009-09-01 12:00:00

Lidar Point Cloud Segmentation

A Novel Framework for Processing Terrestrial Lidar Data
Terrestrial Lidar data has great potential to produce measurements for as-built building information modelling (BIM). Unfortunately, processing hundreds of millions of points, often contaminated by substantial noise, can be tedious and time-consuming. Normal variation analysis (Norvana) segmentation is an automatic method that can segment large terrestrial Lidar point clouds containing hundreds of millions of points within minutes. Thanks to the high speed, point density and accuracy of modern terrestrial laser scanning (TLS), as-built BIM can be conducted with a high level of detail. But TLS captures not only useful geometric information but also unwanted objects, such as people, animals or... (read more)
2019-05-10 02:00:42

Lidar Quality Assurance

Open-source Software for Processing Lidar Point Clouds
Basic tools for processing Lidar point clouds, which can be extended depending on needs, provide a flexible platform for service providers and users alike. The companies Dielmo 3D, Spain, and Water Management, Australia, have demonstrated how a publicly available open-source application with basic tools for visualising, editing and analysing Lidar point clouds has been extended into a compliant platform that serves diverse applications including mapping of power-line corridors, land uses and riverbeds. By José Carlos Garcia and Rafael Torró (Spain), and David Hine (Australia) The platform, called DielmoOpenLiDAR and released under the GNU GPL licence, enables management and display of... (read more)
2015-06-01 11:39:59

Lidar Quality Assurance

Open-Source Software For Processing Lidar Point Clouds
Basic tools for processing Lidar point clouds, which can be extended depending on needs, provide a flexible platform for service providers and users alike. Here, the authors demonstrate how a publicly available open-source application with basic tools for visualising, editing and analysing Lidar point clouds has been extended into a compliant platform that serves diverse applications including mapping of power-line corridors, land uses and riverbeds. The platform, called DielmoOpenLiDAR and released under the GNU GPL licence, enables management and display of massive Lidar datasets together with vectors, rasters, OGC services such as WMS, WFS, WCS and other geoinformation. For professional... (read more)
2015-04-10 01:29:47

VisionMap A3 Version 2.0

VisionMap’s A3 ground processing system version 2.0 is now released. The ground processing system, together with A3 camera improvements now feature better radiometry, higher resolution DSM processing, as well as accurate AT and seamless Orthophoto generation processed in a fully automatic workflow.     The A3 camera system is now supporting lossless jpeg2000 compression of 12bit imagery, as well as longer exposure time. The A3 ground processing system now offers a scalable, automatic processing workflow that generates products seamlessly and is compatible with existing photogrammetric suites.   Among many other features, version 2.0 provides improved radiometry, automatic AT processing of... (read more)
2011-05-04 01:50:52

Leica Ortho Accelerator

Leica Geosystems Geospatial Imaging (GA, USA) has announced Leica Ortho Accelerator, offering a streamlined orthophoto production environment. Leica Ortho Accelerator (LOA) was developed to speed up the rate and accuracy with which digital orthophotos are produced. It is a CuePac add-on to GeoCue, which is a geospatial process management system. With orthorectification and mosaicking capabilities, Leica Ortho Accelerator takes advantage of the distributed and scheduled workflow processing capabilities provided by GeoCue. It also contains various modules providing capabilities such as multi-user access to the same project, distributed processing, production step cuing and several other benefits. “The strategic partnership between Leica Geosystems... (read more)
2007-03-08 12:00:00
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