Recently active topics

2570 Topics

S
SentinelHub User
posted in Sentinel Hub

Sentinel-1 CRS related info

Hey, This might be a bit of a silly question, but I’m querying Sentinel Hub for Sentinel-1 data over a specific AOI. Why is it that for Sentinel-1 we have to use a tuple (something like 20,20) for the resolution, and also how does the CRS affect the output? For instance, for the same AOI, requesting data with EPSG:4326 yields only one pixel, where as using the EPSG:3035 gives me about 17x14 pixels. Also in general, where do I find which CRS to use for a specific satellite? Additionally, if I understand correctly with Sentinel 1, this is also dependent on where the AOI is in the world? Correct? I guess in the EU Sentinel-1 offers higher resolution, where as in the rest of the world it offers lesser resolution? Would appreciate some input about how to wrap my head around the CRS when it comes to Sentinel Hub.

4
S
22 days ago
S
SentinelHub User
posted in Sentinel Hub

Get all sentinel-2 observations for a AOI

I am trying to do a moisture forecast using sentinel-2 for an area of interest and I’d like to get all observations from a certain data range. Here is my current approach: I define mosaicking as TILE in my evalscript for each week, I get the image with max cloud cover less than 0.4 I get several no data images which are dark. I know this is quite expected, but is there alternate way to get all observations for the same AOI and flag the cloudy ones. This is quite important for monitoring a particular FOI. I took a look at the area monitoring article, but the method to retrieve images are not clear to me. It would be great if you can offer my any insights on this. If I am correct, the use a similar approach like mine as well.

6
S
22 days ago
S
SentinelHub User
posted in Sentinel Hub

True colour are Images too bright or extremely dark

I tried to increase the time window to up to 8 months and set least cloud cover to 15 percent, but I am getting images that are too bright or completely dark, although the area is just 74.5 km2 which is large enough to not be completely dominated by clouds I assume. Is there a work around to get decent images for time series analysis of this specific area. example image (11 months least CC mosaicking) example image (3 months least CC mosaicking) The code used: /VERSION=3 function setup() { return { input: [{ bands: ["B01", "B02", "B03", "B04", "B08", "B05", "B06", "B07", "B8A", "B11", "B12"], units: "DN" }], output: { bands: 4, sampleType: "INT16" } }; } function evaluatePixel(sample) { return [sample.B01, sample.B02, sample.B03, sample.B04, sample.B05, sampl

9
S
22 days ago
S
SentinelHub User
posted in Sentinel Hub

Is it possible to know which row/s causing error in Statistical API via Python?

I have a relatively long script in which I calculate multiple Sentinel-2 indices, and then I get an error. Is it possible to get more information about the error, most importantly - which line caused the error? Otherwise, I need to kind of guess via trial and error, which takes a long time. Just to be clear - The question here is not the specific error in this script (which I found and fixed), rather more generally, if it is possible to get the line number or some specific indication of where is the error in long scripts. This is the script: evalscript =‘’’ //VERSION=3 function setup() { return { input: [“B01”,“B02”,“B03”,“B04”,“B05”,“B06”,“B07”,“B08”,“B8A”,“B09”,“B11”,“B12”,“SCL”,“dataMask”], output: [ {id:“coastal_blue”,bands:1,sampleType:“UINT16”}, {id:“blue”,bands:1,sampleType:“UINT16”}, {id:“green”,bands:1,sampleType:“UINT16”}, {id:“red”,bands:1,sampleType:“UINT16”}, {id:“rededge1”,bands:1,sampleType:“UINT16”}, {id:“rededge2”,bands:1,sampleType:“UINT16”}, {id:“rededge3”,bands:1,s

1
S
22 days ago
S
SentinelHub User
posted in Sentinel Hub

Is there any provision to get the overlapping area with the PlanetScope Image through API

We want to programatically download the PlanetScope data for either specific dates or date range. So, is there any provision currently to download a tile which has the maximum overlapping area with our shape/polygon on same date. For example i have attached the screenshot of two Planet Images of the same day. We would want to download the second one rather than first one.

1
S
22 days ago
S
SentinelHub User
posted in Sentinel Hub

Imagery scenes not downloading

We are having problem with inconsistency with downloading scene tiles. It seems that imagery is available on ESA site but not on AWS very frequently. The current issue is scene tiles 17SKR and surrounding scenes on 6/6/18 and 6/11/18. They do show up in quicklooks but cannot access through our script. Lanny

16
S
22 days ago
S
SentinelHub User
posted in Sentinel Hub

Latitude and longtitude to pixel position

Hello, Assume I have an image whcih its size is (10000,10000) and its boundin box is: geometry = [ [ [ 37.831375, 37.319936 ], [ 39.855892, 37.319936 ], [ 39.855892, 36.648589 ], [ 37.831375, 36.648589 ], [ 37.831375, 37.319936 ] ] ] What can I do if I want to find this polygon coordinates in the image ? [[[39.496605773761, 37.323714883356], [39.496514330921, 37.323732909052], [39.495225305793, 37.319562136161], [39.500846543296, 37.31845390628], [39.502573247157, 37.321674080317], [39.496605773761, 37.323714883356]]]

4
S
22 days ago
S
SentinelHub User
posted in Sentinel Hub

Sentinel-2 .tif bands RGB

Hello! I have this from my teacher (I’m a student). I need to display the image in RGB format, using the channels 4, 3, 2. I did that, and I managed to view the images (I tried with 2 for starters, but I will visualize all 12 of them). The code I used is: import os import cv2 import numpy as np import matplotlib.pyplot as plt import rasterio from skimage import exposure, filters def load_rgb_image(folder_path, red_band, green_band, blue_band): # Lista de nume de fișiere TIF din folder file_names = os.listdir(folder_path) # Citirea datelor din benzile specifice bands_data = [] for band in [red_band, green_band, blue_band]: band_path = os.path.join(folder_path, band + '.tif') with rasterio.open(band_path) as src: band_data = src.read(1) bands_data.append(band_data) # Crearea imaginii RGB rgb_image = np.dstack(bands_data) return rgb_image Setare căi către foldere folder_path_1 = “/content/drive/MyDrive/sentinel/S2A_MSIL2A_20170426T091031_N0204_R050_T35TMK_20170

3
S
22 days ago
S
SentinelHub User
posted in Sentinel Hub

Two S2 images on same date

In this S3 bucket sentinel-s2-l2a/tiles/36/N/UH/2021/9/26 I see two directories (0/ and 1/) which according to the file naming documentation refer to two images for the same date. How is this possible? I’ve plotted the images, and they seem to contain the same spatial patterns, but with different value ranges. Were they processed differently?

4
S
22 days ago
S
SentinelHub User
posted in Sentinel Hub

S2Cloudless and Python

Greetings, I am trying to implement in my Python Script the s2cloudless. I am using python 3.6.13 so I installed s2cloudless 1.5.0. I have some questions: Is it necessary to check for clouds after the initial scene classification? Why I cannot import the specific s2cloudless version? It gives an error about future annotations meaning it needs newer python version when in the documentation it says that 1.5.0 needs python >= 3.6. Thank you in advance.

3
S
22 days ago
S
SentinelHub User
posted in Sentinel Hub

I can't use the QGIS plugin Sentinel hub with a Proxy

Hello, I can’t use the Qgis plugin with a proxy. I’ve tried several proxy configurations: default, http… Has anyone solved this problem? 2023-12-11T17:47:54 WARNING Traceback (most recent call last): File “C:\PROGRA~1\QGIS32~1.0\apps\Python39\lib\site-packages\urllib3\connection.py”, line 159, in _new_conn conn = connection.create_connection( File “C:\PROGRA~1\QGIS32~1.0\apps\Python39\lib\site-packages\urllib3\util\connection.py”, line 84, in create_connection raise err File “C:\PROGRA~1\QGIS32~1.0\apps\Python39\lib\site-packages\urllib3\util\connection.py”, line 74, in create_connection sock.connect(sa) ConnectionRefusedError: [WinError 10061] Aucune connexion n’a pu être établie car l’ordinateur cible l’a expressément refusée During handling of the above exception, another exception occurred: Traceback (most recent call last): File "C:\PROGRA~1\QGIS32~1.0\apps\Python39\lib\site-packages\urllib3\connectionpool.py", line 670, in urlopen

2
S
22 days ago
S
SentinelHub User
posted in Sentinel Hub

400 Client Error :ailed to evaluate script! when trying retrieve sentinel1

I’m trying to retrieve sentinel1 images using evalscript. I have followed the instruction as appear here but I couldn’t understand the reason why I keep getting the 400 client error (bad request). This is my evalscript: evalscript = """ function setup() { return { input: {bands: ["VV","VH"]} output:{bands: 2, sampleType:"FLOAT32"}} } function evaluatePixel(sample) { return [10 * Math.log((sample.VV)+0.0001) / Math.LN10, 10 * Math.log((sample.VH)+0.0001) / Math.LN10] } """ and this is how I have tried to use it, when dates is list of dates strings (e.g [‘2020-07-01’,‘2020-07-12’]… or d in dates: request = SentinelHubRequest( evalscript=evalscript, input_data=[ SentinelHubRequest.input_data( data_collection=DataCollection.SENTINEL1_IW_DES, time_interval=(d,d), other_args = other_args = {"dataFilter":{"resolution":"HIGH","acquisitionMode":"IW"},"processin

6
S
22 days ago
S
SentinelHub User
posted in Sentinel Hub

Adding the cloud cover precentage in sentinel hub request

Hello, that might be very simple question 🙂 what is the parameter for cloud coverage precentage in sentinel hub request (evalscript)? I saw examples in the documentation for how to rank it by cloud cover but not how to filter it by the cloud precentage from the evalutate script. I’m a bit confused with all the different api, if you could even tell me where I can find all the possibles parameters I can put in the evalscript it would be great. evalscript_sentinel =""" //VERSION=3 function setup() { return { input: ['B01', 'B02', 'B03', 'B04', 'B05', 'B06', 'B07','B08','B8A','B09','B11','B12'], output: { bands: 12, sampleType: "FLOAT32" } } } function evaluatePixel(sample) { return [ sample.B01,sample.B02,sample.B03,sample.B04,sample.B05,sample.B06,sample.B07,sample.B08,sample.B08A,sample.B09,sample.B1972,sample.B12]; } """ ...... sen_request = SentinelHubRequest( evalscript=evalscript_sentinel, input_data=[ SentinelHubReq

2
S
22 days ago
S
SentinelHub User
posted in Sentinel Hub

Sentinel-2 L2A negative band reflectance values

Hello, We are working on S2 L2A images collected via eo-learn SentinelHubInputTask function. This function is described in the documentation as following : “Process API input task that loads 16bit integer data and converts it to a 32bit float feature”. As we are not passing any evalscript argument that may be overriding the default generated one, according to this article the DN to reflectance conversion should be correctly done. However, we are observing distributions of band reflectance values that are significantly below 0 (down to -.5 in some cases). This doesn’t seem to be an isolated problem as this happens consistently on all images of a time-series. However this doesn’t affect all the bands equally. Here is the frequency histogram of reflectances values coming from all the pixels of a time-series. We are observing agricultural lands, on a 2km x 2km area. Band number is expressed as band index of eo-patch ([‘B01’, ‘B02’, ‘B03’, ‘B04’, ‘B05’, ‘B06’, ‘B07’, ‘B08’,‘B8A’, ‘B09’, ‘B1

4
S
22 days ago
S
SentinelHub User
posted in Sentinel Hub

Missing Scroll Bar in EO Browser Menu?

I do not see the scroll bar that enables downward movement through the list below the Discovery and Visualize Tabs. I see it in Sentinel Hub YouTube videos. I am unable to scroll down the list and view the image thumbprints below those displayed at the top of the static menu. Also unable to access Visualize info below the bottom edge of my Browser window. I am using the free Trail Account to see what Sentinel Hub offers.Screen capture of EO Browser left menu

1
S
22 days ago
S
SentinelHub User
posted in Sentinel Hub

How to access the orthorectified/surface reflectance processing level

We need to access the orthorectified/surface reflectance processing level. In addition, we want to avoid any tasks that may lead to data resampling, aside from atmospheric correction and orthorectification. Therefore, if possible, we would like to access data in the same structure of tilling and resolutions as their original data source (Landsat8-USGS & Copernicus . Datasets/processing level/ bands/spatial resolution: DATASET BANDS RESOLUTION (m) landsat-ot-l2 B02, B03, B04, B05, B06, B07 30m sentinel-2-l2a B02, B03, B04, B05, B06, B07, B08, B08A, B1972, B12 10, 20m Time range: · From = 2017-01-01 · To = 2021-10-08 Temporal Resolution: · We would like to access all the scenes within the predetermined time range, except those with 100% cloud coverage Cloud coverage filter: · Landsat 8 = ~ 80% · Sentinel2 = ~ 60% AOI - Area of interest: · Sentinel2 tile: 23KKQ · Landsat 8 tile: 220076 We are suggesting the AOI based on the original data source tilling, to avoid pixel resampling due

1
S
22 days ago
S
SentinelHub User
posted in Sentinel Hub

For mosaicked image, get tile metadata per pixel

Hi, would it be possible to receive, when mosaicking an image within a certain BBox, per pixel metadata about the tile (date of aquisition, tile code) that is underlying that pixel? Looking for a solution using either the Sentinel-hub package (SentinelHubRequest) or eo-learn package. Thanks!

6
S
22 days ago
S
SentinelHub User
posted in Sentinel Hub

filterScenes filter by month and year

Hi, I am trying to filter my scenes according to month and year. like this return scenes.filter(function(scene) { return scene.date.getFullYear()>=2017 && scene.date.getMonth()==10; }); but when I try to filter scenes with month in evaluatePixel function I get an error Cannot read property ‘date’ of undefined let initMonth = scenes[0].date.getMonth(); but it is working smoothly when only use year filtering. I just want to get specific scenes how can I do that ? Thanks in advance,

9
S
22 days ago
S
SentinelHub User
posted in Sentinel Hub

How can I access planet scope data using sentinel hub request builder

Hi, I am new to this. I am trying to access planet scope data using planet Api key but it shows forbidden error. Guide me how to access planet scope data and add it in sentinel hub.

2
S
22 days ago
S
SentinelHub User
posted in Sentinel Hub

Sentinel Bands data download to EOPatch for a set of timestamps

Hi, I used a list of timestamps to initialise an eopatch. But, when i used the SentinelHubInputTask() function to download bands data for those timestamps, i was not able to download it. I was getting 2D arrays where each value was 0 for all the bands. Essentially, no data is getting downloaded. Thanks, Sidharrth

9
S
22 days ago
S
SentinelHub User
posted in Sentinel Hub

EOlearn imports on colab

Hello, after frying my machine I decided to try to run the Slovenia-cover-map notebook on Google Colab (eo-learn-examples/SI_LULC_pipeline.ipynb at main · sentinel-hub/eo-learn-examples · GitHub) but there is a problem in importing some packages. I did !pip install jpy==0.7 !pip install SentinelHub !pip install eo-learn-core !pip install eo-learn-coregistration !pip install eo-learn-features !pip install eo-learn-geometry !pip install eo-learn-io !pip install eo-learn-mask !pip install eo-learn-ml-tools !pip install eo-learn-visualization !pip install “opencv-python-headless<4.3” before the imports but i got this # Imports from eo-learn and sentinelhub-py from eolearn.core import EOTask, EOPatch, EOWorkflow, FeatureType, OverwritePermission, \ LoadTask, SaveTask, EOExecutor, ExtractBandsTask, MergeFeatureTask from eolearn.io import SentinelHubInputTask, VectorImportTask, ExportToTiffTask from eolearn.mask import AddValidDataMaskTask from eolearn.geometry import VectorToRasterTas

1
S
22 days ago
S
SentinelHub User
posted in Sentinel Hub

Bands avilability in Landsat 8 level 2

Hello, i’m interested in Landsat 8 level 2 images. I’m a bit confused regard the available bands as in USGS it mentioned to have 11 bands, while in sentinel hub configuration utility I see B1-B7 and B10, and it says that the thermal is based on B10. In addition to that I saw here some post regard extra band that relates to clouds but it doesn’t not appear in the bands in the configuration utility. Are these bands available? and if yes how can I acess them and where can I get information regard all the available bands? 🙂

4
S
22 days ago
S
SentinelHub User
posted in Sentinel Hub

Make S2 global mosaic script work with Evalscript V3

I am currently, separately, using the S2 global mosaic hub, and accessing S2 imagery through the Evalscript V3 API. In some cases, I need to use my own compositing algorithm to develop monthly mosaics, so I use Evalscript. In some cases, the S2 global mosaic algorithm suites my needs more than perfectly! It works so well in cloudy tropical regions. I’d love to be able to access the S2 global mosaic outputs through the Evalscript API. I see that the script for generating the mosaic is available on the custom scripts repository here (https://custom-scripts.sentinel-hub.com/sentinel-2/s2gm) but with a note that it needs V2 to run. I’ve been trying to convert the script to V3 for awhile, but I can’t seem to get it to work. If I run the V2 script through V3, I either get “Output default requested but missing from function setup()” or “EvaluatePixel must return an array” as errors. I’ve been reading through the V3 documentation (https://docs.sentinel-hub.com/api/latest/evalscript/v3/) and c

11
S
22 days ago
S
SentinelHub User
posted in Sentinel Hub

Sentinel-2 L2A 10m imagery download

I am trying to download Sentinel-2 L2A imagery from 6/19/2022 over the Chesapeake Bay at the 10m scale, including all 12 bands. When I put in this information, the download button is greyed out (see attached screenshot). I tried limited my extent to just Dorchester county, but the issue persisted. It seems that the imagery cannot be downloaded at the 10m resolution for this extent – is that correct? If so, how would you suggest access the data for my entire study area?

4
S
22 days ago
S
SentinelHub User
posted in Sentinel Hub

DynamoDB & Geospatial?

Hi everyone, I’m just launching into the development of a pipeline for Sentinel image processing, and I was wondering what this community considers best practice for storing/accessing geospatial data in DynamoDB. Most of my data will be a variety of polygons, multipolys, linestrings, and points… but I’m having difficulty seeing how DynamoDB can handle that efficiently for searches. (Also, I want to be able to quickly query by datetime as well, just to complicate things) Do any of you have any projects you’ve implemented thusly? Any recommendations or warnings? I intuitively understand relational databases better, and also that PostgreSQL is available via RDS, but nonetheless I’m curious what you do in the case where you aren’t using that. I’d love to hear your thoughts–I’m at a total loss right now!

1
S
22 days ago
Terms & Conditions