Breaking News

Remote sensing

Near Infrared Spectral Region

Near Infrared Spectral Region

Near infrared spectral region (0.7-1 um) just longer than the red visible spectral region (0.6-0.7um), a region where plant canopies are highly reflective relative to other spectral regions.

Read More »

Thematic Change Detection and Presentation

Thematic Change Detection and Presentation

The thematic change detection is performed based on two Landsat8 classifications from the years 2013 and 2016 over Dubai. After the classification, the combination showed here, enables to extract “From To” information of the studied surface. The Change Detection is done using ENVI 5.1 the presentation and analysis of the result is performed using ArcMap 10.3

Read More »

Analysis of Spectral Response Differences

Analysis of Spectral Response Differences

You will compare the spectral response of broadleaf aspen forest canopies versus a broadleaf wetland canopy using Landsat-8 sensor data (6 spectral bands in the visible, NIR, and SWIR spectral regions.

Read More »

Spatial Filters in Remote Sensing

Spatial Filters in Remote Sensing

This three-part module examines the concept and use of spatial filters in remote sensing. Part 1 introduces the idea of spatial frequency, the reasons for using filters, and the difference between high and low pass filters. Part 2 explains how filters work, as well as, the effects of simple high and low pass filters on an image. Part 3 provides ...

Read More »

Solar Radiance and Reflectance for Landsat 5 and 7

Solar Radiance and Reflectance for Landsat 5 and 7

This Concept Module introduces why and how to correct Landsat imagery to account for difference in Solar Irradiance (the Sun’s energy) due to the changes in the Earth and Sun’s geometry – distance and tilt. This Concept Module is Part 2 of a two part iGETT Concept Module. It includes the equations needed to correct Landsat imagery to account for ...

Read More »

Envisat ASAR image analysis for oil spill monitoring of Prestige oil tanker desaster

Envisat ASAR image analysis for oil spill monitoring of Prestige oil tanker desaster

See how to process a Synthetic Aperture Radar SAR to usable GIS-ready information, using the open source Software Sentinel Application Platform (SNAP). Get more videos and more detailed Information on my website http://ift.tt/1tge7E3 Download the data here:  http://ift.tt/1YhCMnT

Read More »

Rapid Assessment of Hazard Impacts-NASA SEDAC Hazard Mapper

Rapid Assessment of Hazard Impacts-NASA SEDAC Hazard Mapper

With the new NASA SEDAC Hazard Mapper, a rapid assessment of potential hazard impacts is possible! Estimate population in proximity to a hazardous event, identify nearby facilities, including major dams and nuclear power plants and settlements. When a major hazard event occurs, it is often difficult to ascertain quickly what the degree of population exposure might be, and what major ...

Read More »