A series of Earth-observing satellite missions jointly managed by NASA and the U.S. Geological Survey.
10
votes
1answer
224 views
How to Remove Dark Bands Where Scenes Overlap in Mosaic Landsat TM5 Image?
I have an image mosaic of 5 Landsat TM5 scenes. Where the scenes overlap there is a dark band, only on the left and right sides, but the top and bottom are seamless. What is the best way to correct ...
3
votes
0answers
170 views
Polygonize vegetation area from Landsat7 RGB using QGis / Bilko?
I'm trying to extract the areas with vegetation as a polygon-shape from a landsat7-image, 30m resolution, RGB, using QGis 1.8 or Bilko or (hopefully in the near future) ArcGIS. The area is in Northern ...
2
votes
0answers
44 views
How to analyze the signatures for a Landsat clasification with Sextante in Quantum Gis
I’m defining my training data for a Landsat classification. I´m digitalizing the polygons with the field data in QGis and I want to analyze the signatures of the Landsat images to avoid errors. In ...
1
vote
0answers
33 views
Is the 2010 Landsat world map (GLS 2010) available in a GoogleMaps browser?
Is the 2010 Landsat world map, also known as GLS 2010, available to view anywhere on the internet in a GoogleMaps browser?
I need to find it so that it can be added as a layer to a GoogleMaps ...
1
vote
0answers
58 views
How to mask clouds in ER Mapper?
I am using ER Mapper. But, I'm still confused how to detect and mask the clouds.
I want to reduce or eliminate the cloud to perform supervised and unsupervised classification.
0
votes
0answers
34 views
After pansharpening LANDSAT 8 in GRASS, poor colour visualisation in QGIS afterwards
Having used QGIS for quiet some time for mapping, I was 'forced' to dig into GRASS as pansharpening is not directly executable in QGIS. After understanding more or less the structure, I did some ...
0
votes
0answers
19 views
Is Terrain and Topographic Correction the same for Landsat8?
Landsat 8 L1 products are "Terrain Corrected",
that said it means that are they already "topographically corrected", like both words are synonyms or you need to apply correction techniques as well? ...
0
votes
0answers
37 views
how to convert the L1G raster file to geo tiff,
I have downloaded I mage from GLCF, its in LG1 format, how I can process that image in erdas software, or is there any methods to convert it into geo tiff,
0
votes
0answers
56 views
GRASS i.landsat.toar returns empty raster
I am trying to use the GRASS module i.landsat.toar.
Currently the files created are empty and it spits out:
So it seems that it is not picking up something? The location is set to the extent of ...
