Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [landsat-8]

Use this tag when asking question related to the 8th satellite in the Landsat program.

1
vote
1answer
22 views

Using GDALwarp for reprojecting netCDF file?

I am trying to re-project a netCDF file using the gdalwarp command. However, the gdalwarp is giving me a black output. Below is my code: import gdal import osr import netCDF4 from osgeo.gdalconst ...
0
votes
0answers
9 views

Eliminating superfluous raster values using ArcMap?

I have used the raster calculator in ArcMap to calculate the salinity index (RED-NIR/RED+NIR Khan et al.) over a portion of land which was disturbed by the construction of a solar farm. Landsat 8 ...
0
votes
0answers
18 views

Didn't show all the column while export the CSV file while using Google Earth Engine

I'm trying to calculate the water areas and the statistics of each band for each water areas to see if there are seasonal changes. The exported .csv file only have the columns ("GNIS_ID","AreaSqKm","...
1
vote
0answers
18 views

Surface Temperature + Air Temperature in Landsat image comparisons

Quick question about relating Landsat Surface Temperature to locally recorded Air Temperature on a given day: Are differences in local air temperature captured by the Landsat ARD ST imaging process? ...
0
votes
1answer
31 views

Pansharpening Landsat 8 16 bit raster images

Situation: I have merged six Landsat 8 image tiles to one big tile for the bands 4,3 and 2. These are Landsat level 2 products, so already corrected to surface reflectance and need no further ...
11
votes
2answers
741 views

Is it scientifically correct to pansharpen landsat reflectance product with pan band

I need to know if it is scientifically valid to fuse/pan-sharpen Landsat 8 surface reflectance products with pan band of that respective band? Landsat reflectance product details can be found at here. ...
0
votes
1answer
23 views

Integrating Landsat ETM+ and OLI surface reflectance data

I want to do a time-series analysis on Landsat surface reflectance data for an extended period of time (2005-2018), which requires integration of Landsat 5, 7, and 8. Is there any procedure to make ...
2
votes
2answers
78 views

Landsat 8 - Reflectance Values

I downloaded some Landsat 8 OLI/TIRS C1 Level-1 images from EarthExplorer. I was hoping to get reflectance data out of the blue, green and red band; however, when I opened those images in ArcMap, the ...
1
vote
1answer
23 views

Landsat 8 Level 2 products. Converting Pan & Thermal bands to spectral reflectance

We have downloaded around 20 Landsat Level 2 Surface Reflectance scenes for our AoI. The processed bands available in the downloaded scenes are, as you people know - Aerosol,B,G,R,NIR,SWIR,Cirrus. ...
0
votes
0answers
27 views

Deriving temperature from Landsat (Google Earth Engine)

I've been editting a script to make a time series chart of the temperature. (Original script: https://code.earthengine.google.com/2b2c4e1ece6ac2a201f8e854c34cd577 ) The issue is that I don't know what ...
0
votes
0answers
109 views

Calculating LST from Landsat 8 in Google Earth Engine?

I'm trying to write a code for Land Surface Temperature (LST) from Landsat 8 images in google earth engine. I'm using the code of this question as a guide and I succeeded at intermediate steps but I ...
0
votes
2answers
32 views

Google Earth Engine exported image looks different from map rendered on screen

I am creating a composite image of Landsat 8 OLI of Okinawa and want to export the true color image to my google drive as a tif file. I was able to successfully download it, but the image (img2) looks ...
1
vote
0answers
26 views

Removing pixels in band using an inequality in Google Earth Engine?

My current code: https://code.earthengine.google.com/5ff735e22e894a6c1b5ddc628cfccae7 I have an inequality from line 99-106. I want this inequality to assign a value of 1 to all pixels that satisfy ...
1
vote
0answers
17 views

Landsat 8 cloud band: how to understand their (bit) coding?

I am trying to understand how to use the Lansdat 8 cloud quality band. The user guide L8_Surface-Reflectance-Code-LASRC-Product-Guide.pdf does not explain much, but just gives tables (Table 7-1, 7-2 ...
1
vote
2answers
37 views

Efficient way to check sample points on many Landsat scenes?

I want to do an accuracy assessment for an annual burned area map (large area - whole country). I have random sampling points which I need to check in simple burned - not burned categories but ...
4
votes
0answers
309 views

Improve washed out blurry composite Landsat 8 image in QGIS

I want to create a composite image using Landsat 8 bands. I followed the steps to do so (creation of virtual layer, high resolution, separate) and adjusted the bands' colors (red 4; green 3; blue 2) ...
1
vote
1answer
24 views

How can I set multiple values to null in one raster and replace all other values with another raster?

I am working with Landsat8 cloud data (BQA.tiff). I would like to set all medium and high confidence cloud/cloud shadow values (values listed below) to null and replace all other values in this image ...
2
votes
1answer
77 views

Filter Specific dates in Google Earth Engine?

I've called Landsat8 images from 2014 to 2019 using filter date function. But I don't know how can I call Landsat8 images only for June, July, and August from 2014 to 2019? Map.centerObject(geometry);...
2
votes
2answers
67 views

Computing NDVI in ArcMap from Landsat 8 “Analysis-Ready” Surface and TOA Reflectance Products

The internet is full of various contradictory advice on corrections one can make to get NDVI computed from Landsat 8 to fall between -1 and 1. This is for instructional purposes, so I hope to use ...
0
votes
1answer
40 views

ENVI 5.1 - ANN Classification - Background was classified into one of the class

I'm new to Remote Sensing and I'm having trouble in ENVI 5.1 where the background was classified as one of the classes in the ROI I used, which is not right. How can I exclude the background or at ...
1
vote
1answer
27 views

gdal nearblack increases file size. Is this expected behaviour?

I ran gdal - nearblack on a Landsatlook image with geographic reference as follows: nearblack -o c:\test\test_nearblack.TIF -of GTiff c:\test\LC08_L1TP_179044_20181228_20181228_01_RT.tif The input ...
2
votes
1answer
67 views

How to de-stripe a Landsat 8 band with python?

I am working with Landsat 8 images and some of the bands have striping, e.g.: I've been going down a rabbit hole by looking for a solution for this. Does anyone know a python library that could be ...
2
votes
1answer
645 views

Exporting entire ImageCollection in Google Earth Engine using geetools for JavaScript or Python for Windows?

I am very new to ee and am trying to export a collection to my drive, after masking for clouds and clipping to myregion... tried to follow the advice in this answer https://stackoverflow.com/questions/...
0
votes
1answer
53 views

i.atcorr [GRASS] - has anyone used it and actually had success?

I am trying to apply i.atcorr to a landsat mosaic with GRASS. These are my 6S parameters: 18 01 31 22.10 178.940 -17.263 1 1 0 0.115 -0.270 -1000 116 Everytime I run it, it returns me a raster ...
1
vote
2answers
52 views

Do I need to do Radiometric Normalization for time series analysis, if I'm using L2_Landsat8_SR data?

I'm doing some forest change detection across several years using L2_Landsat8 Surface Reflectance data. And I am implementing the method available in R (landsat::relnorm) for relative radiometric ...
1
vote
2answers
100 views

Tiling automation of landsat 8 images?

I have a grid (can be in shapefile and can be also in coordinates) and I need to know how can I create tilings with it to Landsat 8 images (16 bit images), selecting the output tile size, the overlap. ...
0
votes
0answers
47 views

Google Earth Engine pull least cloudy Landsat scene by location using conditional

My goal is to write code that will pull all Landsat 8 scenes available for a given month in a given year for the US, add a cloud score band to each image, and if there are multiple images for the same ...
4
votes
1answer
317 views

Black vertical lines on exported image from Google Earth Engine

I tried to export the NDVI obtained from the Landsat 8 Surface Reflectance Collection in Google Earth Engine and I keep on getting black lines in my final export. Everything looks fine when displaying ...
-1
votes
1answer
74 views

Pansharpening many L8 images in folder?

I want to pansharpen several true color and panchromatic Landsat-8 images in a folder using open source tools (GDAL, Python). File names are of format: L8_2018-09-25T18-17-51_TrueColor_ERaymond.tiff ...
1
vote
3answers
698 views

Landsat 8 Band Value Range

I'm confused as to the range of brightness values associated with Landsat 8 Bands. I know that for Landsat 7 and below it has always been 0 - 255 but some of the literature indicates that Landsat 8 ...
1
vote
0answers
145 views

Normalizing negative pixel values in a GeoTIFF with GDAL in Python

I have a GeoTIFF pulled from Google Earth Engine. I'm using the following code to see the red values of each pixel: from osgeo import gdal gdal.UseExceptions() ds = gdal.Open(myfile) band = ds....
0
votes
3answers
8k views

how i calculate land surface temperature using landsat 8 in Envi 5.1

I am doing research about land surface temperature using Landsat 8 image. However, I have a problem with them. I have read document from Landsat.org, but i can not do it in Envi. Could you help me ...
3
votes
2answers
192 views

Atmospheric effects on extracting soil from BSI index?

I need to extract soil from Bare Soil Index (BSI) using Landsat 8 and Sentinel 2 images in QGIS or IDRISI. I was told to start with basic atmospheric correction of bands by finding in the histogram ...
0
votes
1answer
45 views

Using Google Earth Engine to filter Landsat Daytime image?

How do I filter Landsat imageCollection by their time of collection? For example, if they are daytime or nighttime, which might be specified as Ascending or Descending. I don't know which metadata ...
0
votes
1answer
72 views

What's the time zone of the timestamp of LANDSAT Images?

I am using google earth engine just to print the timestamp here of LANDSAT Image. I am using the geometry of a part of Chennai which is in India. // Filtering Data with Date and Geometry var Data2 = ...
0
votes
1answer
131 views

Google-Earth-Engine + Jupyter : filterBounds not working in Landsat imageCollection

I have a simple problem of not being able to select a single Landsat image using filterBounds within Jupyter environment. It used to work just fine in Earth Engine's online interface. I don't know why ...
1
vote
1answer
37 views

Mapping a function over a Collection

I would like to calculate a MSI index for the each image of the collection and I developed below presented script. But, somehow it is not working and it says "midir.divade is not a function". Can ...
1
vote
1answer
109 views

Function to convert Dictionary to Image works for an image but not for an image collection

I have written a small function that first takes an image, calculates mean for each of its bands and then converts the dictionary of the mean value to an image with each mean value acting as a new ...
1
vote
0answers
41 views

Get a large area landsat 8 metadata from earth-engine

Obviously the code below will returned null because there's no picture in landsat 8 will contain such a large area. #python geometry = ee.Geometry.Polygon( [[73.0, 25.0], [73.0, 49.0], ...
1
vote
1answer
278 views

GEE. : Exported bands must have compatible data types; found inconsistent types: UInt16 and UInt32

What are the possible reasons for this error? This is the code: Map.addLayer(PuntoQuellaveco1); Map.addLayer(operaciones); Map.addLayer(Abast); var image = ee.ImageCollection('COPERNICUS/S2') ....
1
vote
0answers
29 views

Extract the county (or village) level data of forest cover change from Google earth engine [closed]

I am currently working with the Hansen data (Global Forest Change) in Earth Engine. And I would like to extract the county (or village) level data of forest cover change in China from Google earth ...
1
vote
1answer
462 views

Estimating Land Surface Temp Using GEET

I am using google earth engine toolbox to estimate land surface temp for landsat 8 imagery. I have been able to run all the necessary calculation without error but when I add the band as a layer all ...
-1
votes
1answer
58 views

ossim-extract-vertices.exe (in commandline) not working on Windows 7

ossim-extract-vertices.exe (in commandline) is not working on Windows 7. I would like to extract the image bounds from the pan-sharpened Landsat 8 image. 3 years ago it worked. How can I solve this?
0
votes
2answers
1k views

Exporting Large Number of Landsat Images from Google Earth Engine

I am interested in downloading tiff images of cloud-free landsat data from around 100,000 areas of interest in Google Earth Engine. I have written the export script but the process of exporting takes ...
0
votes
1answer
214 views

GEE unsupervised classification (clustering) of Landsat 8 cloud free composite - User memory limit exceeded

Can anyone explain why I am getting the memory limit error when trying to classify using the wekaKMeans algorithm over a cloud-free composite of Bangladesh? I'm trying to differentiate mangrove pixels....
2
votes
0answers
102 views

Calculating indices such as NDVI or NDSI on Landsat 8 imagery whose pixel type is 16 bit signed integer?

I am trying to calculate an NDSI (Normalized Difference Snow Index) using Landsat 8 OLI level 1 imagery atmospherically corrected in ERDAS ATCOR using raster calculator in ArcMap. NDSI is used to to ...
0
votes
1answer
144 views

How to load Landsat imagery over ROI defined as a polygon rather than a point? GEE

In google earth explorer you can load Landsat image around a roi. You can then conduct analysis on this image. I want to expand my region to cover a whole country or continent rather than just the ...
2
votes
1answer
1k views

Landsat 8 cloud/cloud shadow/snow masking in Google Earth Engine [duplicate]

I am a new Google Earth Engine user and I am trying to understand basic procedures/functions. More specifically, I want to remove clouds, cloud shadows and snow pixels form a Landsat 8 collection and ...
1
vote
2answers
299 views

Getting RGB values of each pixel in a LANDSAT 8 GeoTIFF with Python 3

I'm working with a set of LANDSAT 8 Collection 1 Tier 1 GeoTIFFS pulled from Google Earth Engine, and I need to find the RGB values of every pixel in this GeoTIFF. I've tried using the code from ...
0
votes
1answer
322 views

Classification of buildings using USGS Landsat 8 images on Google Earth Engine

I am trying to classify built-up and non-built-up areas in the district of Ambala in India within the time period 2014-17 using a simple classifier model I had created. The model uses 20,000 points ...