Questions tagged [sentinel-2]

Remote sensing satellites with Multispectral imaging capabilities

Filter by
Sorted by
Tagged with
0
votes
0answers
6 views

Remove images from an imageset with clouds within an ROI?

I understand I can see the cloud_coverage_assessment for the whole image, what what about for a specific geometry (ROI)? What if we wanted to limit the images in an imageset to cloud free conditions ...
0
votes
0answers
11 views

Is there any STAC catalog available for Sentinel-2 data on Google Cloud?

We are looking for a fast and optimum way of discovering and downloading Sentinel-2 data from Google Cloud using Python. We have tried using index data in BigQuery and it works. However, we have also ...
0
votes
0answers
13 views

Layer Stacking Sentinel-2 image on Google Earth Engine

How can I stack sentinel 2 Image? My complete code is : var image = ee.ImageCollection('COPERNICUS/S2') .filterBounds(table) .filterDate('2019-06-01','2019-07-01') .median() var subset = image.clip(...
-1
votes
1answer
23 views

Optimal Sentinel 2 Bands combination for NDMI

I want to calculate NDMI (Normalized Difference Moisture Index) using Sentinel 2 bands on QGIS. I am not sure if right formula is B8-B11 or B8A - B11. Band 8 seems to give better results but on the ...
3
votes
1answer
34 views

Forming a single TIFF image of a Sentinel 2 tile [closed]

I downloaded the data using the following command from Amazon S3 bucket : aws s3 cp s3://sentinel-s2-l2a/tiles/51/H/VC/2020/10/19/0/ aus1 --recursive --request-payer. Then translated the 13 bands ...
1
vote
1answer
16 views

Is there a way to merge ImageCollections in Earth Engine without the “system:index” property being modified?

I was trying to merge two Sentinel-2 image collections (one based on date filtering and one based on image IDs), then pull in the matching Sentinel-2: Cloud Probability dataset to apply cloud masking ...
-1
votes
0answers
14 views

Alternatives for agromonitoring.com [closed]

Does someone aware about the alternatives for API from Agromonitoring.com? API call: http://api.agromonitoring.com/agro/1.0/image/search?start={start date}&end={end date}&polyid={ID of polygon}...
0
votes
0answers
17 views

Understanding value range for Sentinel-2 images

I have a question regarding Sentinel-2 images. I do not understand how the spectral reflectance values are saved/converted. After the radiometric specification page: The equipment senses the light ...
0
votes
1answer
27 views

Change detection using different satellite imagery

I'm struggling to acquire Landsat satellite images to carry out time series analysis for a wetland in Liberia as part of my thesis work. Originally, my plan was to acquire images for 1980, 1990, 2010, ...
0
votes
1answer
17 views

Get UTM regions overlapping with a geojson polygon

how can I get the list of UTM grids overlapping with a geojson polygon in web mercator? I am trying to download data off of Sentinel, and I am seeing if I can go directly from an input polygon to ...
1
vote
0answers
33 views

How to find the image ID participating in the mosaicing in Google Earth Engine

I want to find the image ID participating in the mosaicing, here is my mosaic process. Just the partial images appearing in the mosaicing result, not all those meet the filter conditions. The color ...
0
votes
0answers
13 views

Sentinel-2 active fire detection service

I'm looking for a Sentinel-2 analogue of the FIRMS service (Fire Information for Resource Management System), which provides the location of active hotspots. The low spatial resolution of MODIS and ...
0
votes
0answers
19 views

How to calculate albedo using Sentinel 2?

Альбедо Sentinel 2, где найти эти значения и как посчитать в случае необходимости, что на что нужно умножать или делить, я новичок в этом вопросе. (Machine translation) Albedo Sentinel 2, where to ...
1
vote
1answer
23 views

Displaying single band reflectance from Sentinel in GEE

I have been able to display NDVI value in my project but I need some single certain band reflectance value for my data. I have tried in showing blue band (B2) but when I check the inspector tab, the ...
0
votes
1answer
16 views

Data for Sentinel-2 L2A product (suddenly) missing in GEE for certain dates

This code returned imagery for two date ranges previously. It suddenly stopped working for the 2nd date range (2018-06 to 2018-09). I explored setting the cloud cover threshold up to 99 and searching ...
0
votes
1answer
21 views

Passing a start and end date from my list to a map function to filter an ImageCollection in GoogleEarthEngine

For my script I have created the list interval where start and end dates are given for specific time intervals. I would like to map through that list to create a new list where I have an ...
0
votes
0answers
22 views

GEE: Batch Download S2 Image Collection with pixel values = NoData

I am downloading the S2 image collection with all the bands(Band 1-Band 12)based on multiple boundaries. The code is working well and it manages to download the GeoTiff S2 image with all Band 1-Band ...
1
vote
1answer
26 views

Rasterio modifying JP2000 values

I am trying to mask out some of the Sentinel-2 L1C Bands prior to other applications that require me to keep the classic .SAFE structure of the data. I usually use rasterio with no trouble, but even ...
1
vote
1answer
59 views

Semi-Automatic Classification Plugin Image preprocessing Error

I'm using QGIS 3.10 for MacOS with Semi-Automatic Classification Plugin 6.4.7 Currently, I'm trying to perform initial image pre-processing of one of the Sentinel-2 images. However, when I click Run ...
0
votes
0answers
16 views

SNAP Multi-size Mosaic problem

I am trying to mosaic 3 S2 L1C images. I used the multi-size mosaic to prevent resampling as preprocess for the mosaic-only. However the resulting image has 0 values. This is the result: Since S2 ...
0
votes
0answers
27 views

False positive results while mapping water bodies

I am a veterinary epidemiology researcher interested to benefit livestock in a desert. As water is an important resource for herders therefore I have become interested to map water bodies.I learned ...
2
votes
1answer
59 views

Filtering clouds from average in Google Earth Engine

I am filtering a Sentinel-2 collection with the goal of producing an average over a period of three months. I have selected three images within the collection with which to do this. They all have some ...
0
votes
0answers
48 views

Sentinel 2A Classification in Google Earth Engine

I tried to get classify image for my region of interest using Sentinel 2 ,, I got the result, but I am getting error. var roi = ee.Geometry.Rectangle([82.5,18,83,18.5]); //this comment for filtering ...
0
votes
1answer
90 views

Issue using the S2 cloud probability mask on GEE

I want to use the recently available Sentinel 2 Cloud probability mask to extract some reduced time series. I have tried using the example JS code and port it over to Python. import datetime as dt ...
0
votes
0answers
43 views

How to skip null images in Google Earth Engine?

I've called sentinel2 image collection but I don't know how can I skip null images instead of filter.neq(): code link: https://code.earthengine.google.com/b762152c33e6eddca96c2006e62eed54 var s22 = ee....
2
votes
0answers
28 views

Unable to list Sentinel l1c file using AWS CLI

Following Setting for AWS CLI using AWS configure AWS Access Key ID : ********** AWS Secret Access Key : ******** Default region name : eu-central-1 which I get from IAM user After setup I try to ...
1
vote
1answer
44 views

Exporting partial image using Google Earth Engine

When exporting an image to an asset in Google Earth Engine, the task seemingly runs fine but outputs only a tiny corner of my image. It is a filtered, cloud-masked Sentinel-2 scene with 16 bands (13+ ...
1
vote
1answer
31 views

CRS_Transform Error in Google Earth Engine?

I've written below code for crs_transform extraction from sentinel2 images but it returns null value. How can I solve this problem? var B5 = ee.ImageCollection("COPERNICUS/S2") .filterDate('...
2
votes
2answers
61 views

GEE error code while exporting Sentinel-2 cloud masked image

I have filtered a Sentinel-2 image and created a cloud mask for it based on its QA60 band. It works fine and displays with this mask applied. However, when I try to export it to a drive, I get the ...
0
votes
0answers
34 views

Predicting the raster from the time series of NDRE using non-linear regression model in R

Here I have posted the code and got the stacked image of NDRE index by using get_filenames function and then I stacked, there are 4 layers in the stacked image I want to come up with the predicted ...
1
vote
0answers
18 views

Are there Sentinel crop labeled datasets available?

I am starting a project where I am going to use Sentinel-2 imagery and machine learning for detecting sugarcane and coffee. In order to train the algorithm I would need labeled sentinel datasets. I've ...
0
votes
0answers
20 views

Do Sentinel-2 L1C data downloaded from USGS Earth Explorer consist of reflectance values or digital numbers?

I was wondering if Sentinel-2 L1C data downloaded from USGS Earth Explorer consist of reflectance values. And is it necessary to use reflectance values for time series analysis of Sentinel-2 ...
0
votes
0answers
19 views

Display InSAR calculation results on satellite images

I have used PSInSAR technology to process and got the result of ground subsidence velocity. I saw in [a paper]1 that the results of ground subsidence velocity (a layer) can be displayed on satellite ...
0
votes
1answer
56 views

Installing packages for ACOLITE atmospheric correction; RuntimeError - HDF4 DLLs

I would like to use ACOLITE atmospheric correction with python, however, I cannot install pyhdf. The RuntimeError is following: RuntimeError: Cannot find required HDF4 DLLs -- check LIBRARY_DIRS I ...
0
votes
0answers
67 views

Identifying annual first day of peak NDVI in Google Earth Engine from Sentinel 2 images

I am trying to make a map showing the annual first day of peak NDVI over an agricultural area over multiple years using Sentinel 2. The final result should be similar to this on a smaller scale. https:...
0
votes
0answers
33 views

How to Change Image's Color By Changing Its Pixels' Values Based On Some Bands Computation in Google Earth Engine?

I have this requirement to perform pixel-level computation involving spectral bands of sentinel image. The code in javascript is as follows: var ratio_1 = (B04 - 0.35) / 0.215; var ratio_2 = (B04 - ...
0
votes
0answers
10 views

Issues calculating VARI from Sentinel L2A

I have a dataset of Sentinel-2 L2A imagery for which I am calculating the Visual Atmospheric Resistant Index (VARI). The bands that I am using (B2 = blue B3 = green B4 = Red) I am working in ArcMap. ...
0
votes
1answer
32 views

Failing to Show Custom Sentinel 2 Image Collection on a Map in Google Earth Engine

I'm creating a custom image collection over a bound region as follows: Get image collection containing images taken by satellite in 7 days var collection_to_covert_to_image = ee.ImageCollection(&...
1
vote
1answer
38 views

Performing land cover classification over whole country

I am doing land cover classification over the whole country of Djibouti. I am downloading Sentinel 2 images for this purpose. I have realised doing land cover classification over a large area needs ...
0
votes
1answer
43 views

ArcGIS mosaic to new raster colour difference

I am trying to merge two rasters from a Sentinel-2 scene in ArcMap 10.5. They are next to each other geographically and were taken moments apart on the same day. Prior to this issue I have used the ...
1
vote
1answer
67 views

Sentinel NDVI timelapse

I'm trying to make a 5-year timelapse of monthly NDVI composites. I apply a Hollstein mask, make composites and fill the masked area with mean NDVI pixels of the entire timeperiod. Of course this ...
1
vote
0answers
27 views

QGIS SCP doesn't stack all bands for Sentinel 2

I've been following various tutorials to try and stack and then eventually classify images from Sentinel 2, but after downloading the images and running the band set tool, it simply only stacks 4 ...
0
votes
0answers
139 views

Tile error: Earth Engine capacity exceeded (exporting image) - sentinel2

I am new to earth engine. This is my second project, I followed eart engine tutorial on mygeoblog.com, when I try to export the image, it says ” Tile error: Earth Engine capacity exceeded”. I have ...
0
votes
1answer
68 views

Extract pixel values from several bands of an image and export in a single table in Google Earth Engine

I am creating several bands of spectral indexes by reducing the S2 TOA image collection. For each spectral index, I am extracting the pixel values at specific locations (a point shapefile represent ...
-1
votes
1answer
91 views

Download Sentinel images from ArcGIS Pro

I am interested in finding a way to download Sentinel images within ArcGIS Pro. As a plugin a script or a Toolbox. I know there are already some solutions like Sentinel Hub etc. However, I am looking ...
1
vote
0answers
48 views

Google Cloud Image exporting blurry and small tiff images

I'm trying to export a image from GEE. For some reason, I'm getting a very small image size that is only 21x30 in dimensions. I'm trying to read it in Python and QGIS. Same problem in both platforms ...
1
vote
1answer
20 views

Add several Spectral Indexes over an image collection in Google Earth Engine

I want to add several spectral indexes in one go over a Sentinel2 TOA collection. If I do only with NDVI the script works. If I add 2 types of NDWI I get the following "Syntax Error: Unespected ...
0
votes
0answers
25 views

Making GEE code for Pansharpening Sentinel-2

The following link contain information about Pansharpening Sentinel-2 https://leclab.wixsite.com/spatial/post/pansharpening-sentinel-2-imagery-in-google-earth-engine The code in picture form and long ....
1
vote
1answer
22 views

Sentinel-2 and Landsat-8 future acquisitions

In order to schedule in-situ measurements at the time of Sentinel-2 and Landsat-8 overpass for my AOI, I would like to access their future acquisitions plans for the summer 2020 (July/September). I ...
3
votes
1answer
33 views

Sentinel-2 images

I am going to use Sentinel-2 images for crop type classification, and I am new to remote sensing. I want to know if there is an added value when using both L2A and L1C images. From what I understand, ...

1
2 3 4 5
8