FEATURES
Digital Site Mapping and Change Detection using Artificial Intelligence The World is changing every day and monitoring that change on ground can be a tedious and labour intensive task. What ways are there to automate this task? Foundations of Digital Site Mapping Before we get to the digitization of sites, there are a few principles and terminologies to understand. Geoinformation is the science and technology dealing with the structure and character of spatial information, its capture, classification and qualification, storage, processing, portrayal and d i s s e m i n a t i o n .
- Photogrammetry: The science of making measurements using photographs. Photogrammetric analysis is applied to photographs, to detect, measure and record complex 2D and 3D imagery by feeding images into computational applications. - Remote Sensing: The science of obtaining information about objects or areas from a distance. Remote sensors collect data by detecting the energy that is reflected from Earth. These sensors can be on satellites or mounted on aircraft.
By Brian Babu Kariuki - Spatial Analysis: Spatial analysis is the process in which you model problems geographically, derive results bycomputer processing, and explore and examine those results. The idea of stacking layers containing different kinds of data and comparing them with each other based on where things are located is the foundational concept of spatial analysis. The true power of Geo-information lies in the ability to perform analysis.
Geography and earth science increasingly rely on digital spatial data acquired from remotely sensed images analysed by geographical information systems (GIS) and photo interpretation of aerial photographs. Applications - Global Navigation Satellite Systems (GNSS): Refers to a constellation of satellites providing signals from space that transmit positioning and timing data to GNSS receivers.
Figure 1: Spatial Analysis using GIS maps that combine layers of data representing real world locations and entities
Applications of Geo-Information
37
Issue 004 | December 2021
