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Analysis

A collection of 9 posts

Introduction to radiometric calibration

Introduction to radiometric calibration

Absolute radiometric calibration is a technique used to ensure the accuracy of the radiance values measured by satellite sensors. Radiance is a measure of the amount of light that is reflected from the earth's surface, and is an important factor in the interpretation and analysis of satellite imagery.

Monitoring Atmosphere

Monitoring Atmosphere

Satellite data provides an opportunity to monitor the atmosphere. One satellite suitable for monitoring is Copernicus Sentinel-5P. This satellite enables atmospheric measurements and to map gases such as nitrogen dioxide, ozone, sulphur dioxide, methane, carbon monoxide, formaldehyde and aerosols. As an example below is a map showing the change of

Terramonitor Web Store

Terramonitor Web Store

Press release, May 28 2020 Terramonitor launches a Web Store that provides easy access to analysis-ready satellite images and up-to-date satellite maps. By processing thousands of satellite images per day with AI and cloud computing, Terramonitor provides revolutionary tools for monitoring and analyzing the globe from space. Terramonitor, a leader

Earth observation

Cloud vs. Snow

Clouds are always challenging in remote sensing unless you are especially interested in clouds and want them to appear in your satellite imagery. How about snow? It is also white and in some cases, without further analysis, it might look like a cloud. So how to differentiate snow cover and

Errors related to the automatized satellite-based change detection of boreal forests in Finland

Errors related to the automatized satellite-based change detection of boreal forests in Finland

Terramonitor took part in a Finnish government head project related to detecting changes in boreal forests during 2016-2019. Time series change detection.The project was executed by Teknologian tutkimuskeskus VTT Oy, Natural Resources Institute Finland, Finnish Forest Centre, Finnish Environment Institute and Terramonitor. Examples of clear-cut and thinning detection.Some

A practical comparison of GeoTIFF compression algorithms

A practical comparison of GeoTIFF compression algorithms

Not all GeoTIFFs are alike. Two images with identical information might have a different format for storing the data.

Shapefile vs. GeoJSON vs. GeoPackage

Shapefile vs. GeoJSON vs. GeoPackage

What if you were given the option to choose your GIS file format freely, is there one format which is technically superior to the others?

Eduskuntavaalitulos avaruudesta, osa 2

Eduskuntavaalitulos avaruudesta, osa 2

Korreloiko puolueiden kannatus taimikonhoidon laadun kanssa? Tutkimme puolueiden kannatuksen ja Terramonitorin kehittämän VESA-indeksin yhteyttä.

Eduskuntavaalitulos avaruudesta, osa 1

Eduskuntavaalitulos avaruudesta, osa 1

Mitä eduskuntavaalitulos tarkoittaa kasvillisuuden kannalta? Päätimme Terramonitorilla tutkia kasvillisuuden määrää perustuen avaruusdataan, ja tutkia sitä suhteessa puolueiden kannatukseen.