New answers tagged

1

Well, one way would be to read the data documentation. The Scientific Data Hub specifically states: "The Sentinel-2 data offer for the Scientific Data Hub will consist of Level-1C user products", which is in reflectance values. As such, you may have actually corrupted the data in applying an atmospheric correction that, as part of the processing, corrects ...


0

To put it bluntly, the best way is simply to look at the spectral bands of your Satellite image. If it has a near infrared band, the atmosphere should make a gap here in the case of an image without correction. The blue band can also help you find out if it has been corrected by looking for the effects of Rayleigh scattering (look for places where the blue ...


0

DigitalGlobe offers a GBDX service that lets you deploy your object detection algorithms against the worlds largest satellite image archive: http://developer.digitalglobe.com/gbdx/ I think their free developer tier includes some algorithms that would help you get started. Getting acurrate building footprints with a fully automated algorithm is tough though! ...


3

This isn't really an answer, but it is funny that I just saw an article today about this problem. Maybe it will lead you in the right direction. http://www.nextgov.com/big-data/2016/05/promise-terrapattern-visual-search-engine-satellite-imagery/128673/ Terrapattern, a visual search engine for satellite imagery, released this week by a team of artists ...


0

if SUN_AZIMUTH = 153 then sensor_zimuth would be=153 and if sun zenith is = 57, then sensor zenith also equal to =57



Top 50 recent answers are included