Analysis and Modeling: Machine Learning (SVM & RF) for RS Image Classification
4491 words·22 mins
For a PDF version of the paper click here 1 Introduction # In the era of big data, the amount and availability of remote sensing and earth observation (EO) data as a whole has seen a large increase (Culberg & Fuhs, 2017; Lv & Wang, 2020).
Geo AI: Geospatial and Semantic Analyses of Social Media Data
44 words·1 min
This project performs a complete geospatial and semantic analysis of social media data. The methodology used has many real-world application contexts. The code used for this analysis has been implemented as a Jupyter Notebook and can also be accessed through Google Colaboratory or GitHub.
I3 Project: Automated Road Segmentation for Change Detection in Cologne
3886 words·19 mins
Abstract # Through growingly accessible computing power and frameworks, deep learning has emerged as a promising approach to automatically extract information from images, thereby saving time and resources. This project combines earth observation (EO) data analysis with deep learning to highlight changes in the city of Cologne’s road network between the years 1998 and 2019.
Geodata Acquisition: Photogrammetry Using UAV-Based Aerial Images
723 words·4 mins
This analysis is based on a fictional scenario, where UAV photogrammetry is used to determine whether the goals of a football pitch are equal in size. To do this, images of the pitch are captured and analyzed.
Geodata Acquisition: Mobile GNSS Data Acquisition II
782 words·4 mins
Located in central Europe, the city of Salzburg is home to many different species of trees. This project aims to analyze the distribution of tree species within the city. To obtain data for this analysis, the location, species, and selected attributes of trees are manually collected in the field using Esri Field Maps.
Geodata Acquisition: Mobile GNSS Data Acquisition I
714 words·4 mins
Today the capture of GNSS data has become accessible to most people via sensors built into smartphones. Although smartphone sensors are not known to have particularly high accuracy, they provide a simple, cost-effective solution for GNSS data collection.
Spatial Databases: WebGIS Database Backend
2021 words·10 mins
The use of a WebGIS is of great help for visualizing and organizing spatial and non-spatial data when planning and managing large events. It can allow visitors to easily access data and query information through an application on their phone.
Geovisualization: Austrian Soils Web Application
105 words·1 min
The objective of this project is to develop a web-based mapping application that enables users to investigate the distribution of different soil types across Austria. The application provides users with information about the coverage of each soil type within Austria.
Object-Based Image Analysis: OBIA Classification
726 words·4 mins
This exercise employs a variety of Object-Based Image Analysis (OBIA) Methods to classify a generated scene (Figure 1). This includes the use of sample-based and knowledge-based (including hierarchical) approaches. All practical tasks in this exercise were conducted using eCognition 9.
Machine Learning: Multiclass Classification
1144 words·6 mins
This project aims to perform a multiclass classification with machine learning methods to classify the quality of different wines depending on certain other attributes (e.g., pH, acidity, sugar, alcohol). Multiple steps of exploratory data analysis, preprocessing, and classification are conducted.
Software Development: Google Earth Tweet Mapper
98 words·1 min
The following showcases a Java program developed to integrate data from a CSV file and an OGC WMS into a KML file and open the file with Google Earth. The final KML file displays tweets as placemarks along a timescale and uses a WMS image as a ground overlay.
Software Development: Web Feature Service Connector
358 words·2 mins
The following showcases a Java program that retrieves and parses features from a Web Feature Service (WFS) using GeoTools. The chosen data source is the city of Vienna’s WFS for open data.
Methods in Spatial Analysis: Solar Energy
68 words·1 min
This lab explores potential sunshine energy by conducting a limited solar energy analysis of the town Zell am See in Austria, using ArcGIS Pro for the analysis and ArcGIS Online for the presentation of the results.
Methods in Spatial Analysis: Visibility Analysis
53 words·1 min
In this analysis, the two methods Line of sight and Viewshed have been successfully applied to simulate a ficticious scenario for a visibility analysis. ArcGIS Pro and ArcGIS Online were utilized to carry out these analyses and to visualize and interpret the results.
Methods in Spatial Analysis: Terrain Analysis
45 words·1 min
In this analysis, different terrain analysis tools and techniques are explored, including slope and curvature analysis. ArcGIS Pro and ArcGIS Online were utilized to carry out these analyses and to visualize and interpret the results.
Methods in Spatial Analysis: Spatial Interpolation
70 words·1 min
Spatial interpolation is based on the idea that nearby locations are more similar to each other than distant locations, as stated in Tobler’s First Law of Geography: “Everything is related to everything else, but near things are more related than distant things.
Software Development: Dynamic Google Earth Launcher
423 words·2 mins
The following showcases a Java program that generates and opens a Google Earth KML file with a set of placemarks, each corresponding to a geographic location specified by a pair of latitude and longitude coordinates.