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IMPROVING PATH QUERY PERFORMANCE IN PGROUTING USING A MAP GENERALIZATION APPROACH
pgRouting Road Networks Skeletal Model Skeleton Shortest Path Map Generalization Zones Path Computation
2018/11/8
pgRouting library provides functions to compute shortest path between any two points of a road network which is of great demand and also a topic of interest in the field of GIS, graph theory and trans...
STUDY ON THE INFLUENCE OF CCD DETECTOR TEMPERATURE ON THE PERFORMANCE OF THE SPACE REMOTE SENSING CAMERA
Remote Sensing Camera Charge-coupled Device Temperature Signal-to-Noise Ratio Dynamic Range
2018/5/16
The CCD detector is the core device of the space remote sensing camera. The performance of CCD detector greatly affects the performance of the whole remote sensing camera. The temperature of the CCD d...
2017SPIE地球科学与遥感中的高性能计算专题会议（High-Performance Computing in Geoscience and Remote Sensing）
2017 SPIE 地球科学与遥感中的高性能计算 专题会议
2017/4/26
Advances in sensor technology with higher spatial, spectral and temporal resolutions are revolutionizing the way remote sensing data are collected, managed and processed. Latest-generation instruments...
PERFORMANCE EVALUATION OF 3D MODELING SOFTWARE FOR UAV PHOTOGRAMMETRY
UAV Photogrammetry 3D Modeling software Structure from Motion Evaluation of Accuracy Aspects
2016/11/11
UAV (Unmanned Aerial Vehicle) photogrammetry, which combines UAV and freely available internet-based 3D modeling software, is widely used as a low-cost and user-friendly photogrammetry technique in th...
OBSERVATIONS ON THE PERFORMANCE OF X-RAY COMPUTED TOMOGRAPHY FOR DIMENSIONAL METROLOGY
X-ray computed tomography (XCT) dimensional metrology holeplate orientation beam hardening
2016/11/11
X-ray computed tomography (XCT) is a rising technology within many industries and sectors with a demand for dimensional metrology, defect, void analysis and reverse engineering. There are many variabl...
THE DESIGN OF A HIGH PERFORMANCE EARTH IMAGERY AND RASTER DATA MANAGEMENT AND PROCESSING PLATFORM
Raster Database Image Processing Raster Analytics HPC Oracle GeoRaster Platform
2016/11/8
This paper summarizes the general requirements and specific characteristics of both geospatial raster database management system and raster data processing platform from a domain-specific perspective ...
Performance Evaluation of Alternative Relative Orientation Procedures for UAV-based Imagery with Prior Flight Trajectory Information
Relative Orientation Essential Matrix Closed-form Solution UAVs
2016/7/27
Thanks to recent advances at the hardware (e.g., emergence of reliable platforms at low cost) and software (e.g., automated identification of conjugate points in overlapping images) levels, UAV-based ...
ANALYZING RCD30 OBLIQUE PERFORMANCE IN A PRODUCTION ENVIRONMENT
Oblique imagery Point Cloud Mesh Accuracy Analysis Normalized Difference Vegetation Index Line Spread Function
2016/7/27
In 2014 the Institut Cartogràfic i Geològic de Catalunya (ICGC) decided to incorporate digital oblique imagery in its portfolio in response to the growing demand for this product. The reason can be at...
COMPARISON OF USER PERFORMANCE WITH INTERACTIVE AND STATIC 3D VISUALIZATION – PILOT STUDY
3D visualization exploratory study interactive visualization
2016/7/8
Interactive 3D visualizations of spatial data are currently available and popular through various applications such as Google Earth, ArcScene, etc. Several scientific studies have focused on user perf...
EYE TRACKING TO EXPLORE THE IMPACTS OF PHOTOREALISTIC 3D REPRESENTATIONS IN PEDSTRIAN NAVIGATION PERFORMANCE
3D photorealism eye tracking cognitive workload,
2016/7/8
Despite the now-ubiquitous two-dimensional (2D) maps, photorealistic three-dimensional (3D) representations of cities (e.g., Google Earth) have gained much attention by scientists and public users as ...
THE PERFORMANCE OF A TIGHT INS/GNSS/PHOTOGRAMMETRIC INTEGRATION SCHEME FOR LAND BASED MMS APPLICATIONS IN GNSS DENIED ENVIRONMENTS
Direct georeferencing Constraint Mobile Mapping System Control points
2016/7/5
The early development of mobile mapping system (MMS) was restricted to applications that permitted the determination of the elements of exterior orientation from existing ground control. Mobile mappin...
COMPACT HYPERSPECTRAL IMAGING SYSTEM (COSI) FOR SMALL REMOTELY PILOTED AIRCRAFT SYSTEMS (RPAS)–SYSTEM OVERVIEW AND FIRST PERFORMANCE EVALUATION RESULTS
Hyperspectral camera RPAS linear variable filters
2016/7/5
This paper gives an overview of the new COmpact hyperSpectral Imaging (COSI) system recently developed at the Flemish Institute for Technological Research (VITO, Belgium) and suitable for remotely pil...
PERFORMANCE ASSESSMENT AND GEOMETRIC CALIBRATION OF RESOURCESAT-2
On-orbit calibration sensor model inter-camera alignment band to band registration
2016/7/4
Resourcesat-2 (RS-2) has successfully completed five years of operations in its orbit. This satellite has multi-resolution and multi-spectral capabilities in a single platform. A continuous and autono...
PERFORMANCE EVALUATION OF DIFFERENT GROUND FILTERING ALGORITHMS FOR UAV-BASED POINT CLOUDS
Point Cloud Ground Filtering Unmanned Aerial Vehicle Aerial Photo Digital Elevation Model Adaptive TIN
2016/7/4
Digital Elevation Model (DEM) generation is one of the leading application areas in geomatics. Since a DEM represents the bare earth surface, the very first step of generating a DEM is to separate the...
An approach to monitoring performance of geo-coded multisensor data fusion system
approach monitoring performance geo-coded multisensor data fusion system
2016/5/23
Performance monitoring of data fusion system of geo-coded multisensor involves monitoring the activity of the system,making management decisions and performing maintenance actions to reduce the influe...