Tag: remote sensing

Winter solstice and Hillshade over Brussels

Yesterday, the 21st of December 2016, was the shortest day in the Northern Hemisphere. In other words, it is the day the sun is the lowest in the sky at…
Read More

Sentinel-2’s response to Trump’s Election

It couldn't be more clear from the Sentinel-2's side. Take a look at the following image, which was taken the 7th of November 2016, just one day before Trump's election.…
Read More

The Simple and Free PostGIS VS the Complex and Expensive Oracle Spatial

Spatial Database battles exists since … the existence of spatial databases! Two most prominent spatial database in the GIS world are Oracle Spatial and PostgreSQL/PostGIS, both having advantages and disadvantages.…
Read More

Evolution of an area using Sentinel-2 and Time Series

The European Commission's Copernicus programme makes it possible to have a snapshot of Earth every 5 days in the multispectral bands. I already covered several applications of Sentinel-2 imageries: Full…
Read More

Full Sentinel-2 cloud-free mosaic of Belgium!

The Copernicus's Sentinel-2 programme makes it possible to have a full mosaic coverage of any point in Europe with a revisit of 5 days at the Equator, provided no clouds…
Read More

Agriculture and Sentinel-2: An unsupervised temporal classification

Remote Sensing and agriculture always have been best friends. With the arrival of Sentinel-2 data, the friendship got even more stronger! In this article, we're trying to figure out how we could use Sentinel-2…
Read More

Earthquake in Amatrice, Italy: Before/After with Sentinel-2

Sentinel-2 imageries can be used in a huge variety of applications. I was trying to figure out how these free data could be used in the monitoring of Earthquake damage. The…
Read More

Change detection using Sentinel-2 and PostGIS

With its very short revisiting period, Sentinel-2 satellite data make it possible to perform change detection operations of every point on Earth every 5 days at least. In this article, we're going to…
Read More

Wildland Fire study with Landsat 7 and PostGIS

Wildland fires commonly occur during the hot and dry seasons. More tempered climates can however also be affected. We are studying the extent of the last major wildland fire that occur the 25…
Read More