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Analysis APIs

Analytics API, Processing API, Asynchronous Processing API, Batch Processing APIs, Statistical API, and Batch Statistics API.

  • 2,579 Topics
  • 8,940 Replies
2579 Topics
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SentinelHub User
posted in Analysis APIs
Array 8x8 pixels

Hi, relative to S-2 images, I would ask if is possible to “quantify” the “dominance effect” of one pixel on another if we considered ONE pixel. This effect produces a not true value of DN (one for each spectral band). This effect, I have read elsewhere, can be minimized if we considered an array of (minimun) 8x8 pixels. It’s true? There is some official documents of ESA attesting this? Thank you. Nicola

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SentinelHub User
posted in Analysis APIs
How to use custom URL Parameter PRIORITY' in WcsRequest or S2L1CWCSInput'

class CustomUrlParam(Enum): Does not have the parameter PRIORITY. I want the data in EOPatch in order of cloud coverage by using PRIORITY as leastCC. Please let me know how to use custom URL Parameter “PRIORITY”. Thanks, Tushar

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SentinelHub User
posted in Analysis APIs
Land change detection notification

we would like to detect any change in the landbank for any activities, especially encroachment issues and notify them internally. We plan to take high-resolution images and compare using AWS computer vision for any suspicious activity in a week. We seek solutions and guidance on how to achieve this task… specially how to take high-resolution pictures once a week automatically and compare the same.

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SentinelHub User
posted in Analysis APIs
CLIENT_ID and CLIENT_SECRET error

I am trying to configure CLIENT_ID and CLIENT_SECRET as indicated in the tutorial In my dashboard I configured a new OAuth (ID: db24bd9f-94ea-45d1-9a1b-0f91b73d4b4b), however when I type in the cell this data, and executed (img = request.get_data()[0]) ) gives me this error: ValueError: The configuration parameters ‘sh_client_id’ and ‘sh_client_secret’ must be set to authenticate with the Sentinel Hub service I have written the parameters correctly in the following script in the documentation and if you allow me to connect, but as I mentioned before, in the tutorial code cell it generates an error. from oauthlib.oauth2 import BackendApplicationClient de requests_oauthlib import OAuth2Session client_id = 'db24bd9f-94ea-45d1-9a1b-0f91b73d4b4b client_secret = 'mytoken client = BackendApplicationClient(client_id=client_id) oauth = OAuth2Session(client=client) token = oauth.fetch_token(token_url=‘https://services.sentinel-hub.com/oauth/token’, client_id=client_id, client_secret=client_secre

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SentinelHub User
posted in Analysis APIs
Best configuration for l2a

Hi Ever one. I need to know whats is the best configuration to get the best and atualizated images from Sentinel - L2A. I m atual layers in use is: #### Bathymetric ID: BATHYMETRIC #### False color (urban) ID: FALSE_COLOR_URBAN #### False color (vegetation) ID: FALSE_COLOR #### Geology ID: GEOLOGY #### Moisture Index ID: MOISTURE_INDEX #### Natural color (true color) ID: TRUE_COLOR #### NDVI ID: NDVI #### NDVI_TESTE ID: NDVI_TESTE #### SWIR I will be very glad if some can help me! Thanks comunity! =)

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S
SentinelHub User
posted in Analysis APIs
S2Cloudless for whitecap detection

Hi! I am doing my master thesis on whitecap detection and eventually atmosphere - ocean interaction and wind forecasting based on this. Therefore, I am wondering if anyone have experience using s2cloudless for this application? Any modification of the segmentation process that could be recommended etc. Thankful for any input from the community.

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SentinelHub User
posted in Analysis APIs
Bulk download of Sentinel-1 datasets from AWS s3

Kindly suggest how to download datasets in batch from Sentinel-1 s3 on AWS (via aws cli ). Is there any way we can query the s3 for a list of datasets and download them ? Kindly suggest.

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S
SentinelHub User
posted in Analysis APIs
Using GPU for LightGBM processing

Hi, I have been running the EO-learn Land Cover Map Jupyter Notebook, which uses the LightGBM algorithm for creating the land cover map. As I have access to a machine with a dedicated GPU I thought it would be interesting run a test of this algorithm, first using the CPU only, secondly with a GPU included. After some tweaking the algorithm (https://lightgbm.readthedocs.io/en/latest/GPU-Performance.html), I expected a considerable speed-up with the GPU. However, not so much changed (4.41 min wall time for GPU vs. 6.46 min wall time for CPU), I expected more like 2-3x speed up. As I not an expert on GPU tuning, or IT hardware in the first place, I am wondering if someone on this forum has experience with the use of GPUs for classifications, or could provide some information on what I did actually made sense.

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S
SentinelHub User
posted in Analysis APIs
Different between doing coregistration from eo-learn and arosics?

I was trying to do image co-registration of two images using arosics and eo-learn. What is the difference in the methodology of both library. I tried co-registering MODIS and Landsat-8 using arosics. But it takes a lot of time on whole raster. Any example of co-registering specific bands of two images without downloading them and only download co-registered band of image.

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S
SentinelHub User
posted in Analysis APIs
cOMO INICIAR NECESITO CONOCER EL ÍNDICE

Qué procedimiento seguir para conocer indices SIPI y NDWI?, estoy interesada en conocerlos en fincas de Colombia.

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SentinelHub User
posted in Analysis APIs
Get statistical data in the EO Browser

I do not have much experience for the analysis of the data. I need to see if someone can help me in the following cases: I need to download some data table from a specific region, an excel format would work for me. In the EO Browser, I have doubts about the Moisture Index, does that index show the humidity present in the plant? or how does it differ from the NDWI index? regards…No tengo mucha experiencia para el análisis de los datos. Necesito ver si alguien me puede ayudar en los siguientes casos: Necesito descargar alguna tabla de datos de una región en especifico, un formato de excel me funcionaría. En el EO Browser, tengo dudas con el índice de Moisture Index, ¿ese índice muestra la humedad presente en la planta? o en que se diferencia con el índice de NDWI?  

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S
SentinelHub User
posted in Analysis APIs
google colab (python) to fetch images from sentinel-hub erroe

Hello , I am using google colab (python) to fetch images from sentinel-hub …it was working fine and all but the next day when I ran the code again I got an error in the get_data() command … UnidentifiedImageError: cannot identify image file <_io.BytesIO object at 0x7fb0c3f0c9b0> Its weird to me that when I restarted the run session as a whole and closed and reopened the note it worked … (not an efficient solution ) So does anyone know what is this issue and how can I solve it ?

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SentinelHub User
posted in Analysis APIs
Landsat 8 cloud segmentation approach

Hi folks,I read about your Landsat 8 cloud segmentation approach here:Medium – 31 Mar 21Clouds Segmentation in Landsat 8 imagesGetting more valuable data from Landsat-8 missionReading time: 7 min read  … and here:github.comsentinel-hub/custom-scripts/blob/master/landsat-8/clouds_segmentation/script.js// 1- definition of math functionsvar abs = Math.abs;var ceiling = Math.ceil;var cos = Math.cos;var exp = Math.exp;var floor = Math.floor;var log = Math.log;var sin = Math.sin;var sqrt = Math.sqrt;var truncate = Math.trunc;var round=Math.round;// 2- definition of output colors for representation of pixels (can be modified) var WHITE= [1,1,1];var BLACK = [0.0, 0.0, 0.0];var RGB = [2.5*B04,2.5*B03,2.5*B02]var custom = [2.5*B03,2.5*B04,2.5*B02]; //this one can be modified according to user's wish // 3- actual representation of the two classes (can be changed according to user wish)This file has been truncated. show original  I like the simplicity of your approach and implemented it in the goo

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Sinergise Team
posted in Analysis APIs
About the Sentinel@AWS category

Accessing Sentinel data from the Earth on AWS Open Public Dataset

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SentinelHub User
posted in Analysis APIs
Labelling of image

Dear experts, I am working on a project to detect fire based on the multi-spectral data. My current process is manual - reviewing, based on the actual fire infirmation or based on data from MODIS, each image for the specific location and time period and flag them accordingly. Besides being time consuming, this has scope for many errors. Is there a better option to download the fire and no-fire data (either image or the underlying bands). There are some eval script that does the fire masking (which I am following to revalidate), but I want to minimize the false positives. Without proper labeling, the rest of the code will not function properly. Any pointer would be highly appreciated. My preference is to use the non-visible spectrum, but I am not able to find the right way to label them. Also, when downloading .png or .jpg, what would be an ideal resolution, especially if you only have longitude and latitude? Does it make sense to add a bigger buffer for the bounding box or a smaller bu

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S
SentinelHub User
posted in Analysis APIs
Bucket does not exist

Hi all,I try to use “batch” in Request Builder and followed all the cascading guides to set up a bucket at Creodias cloudferro. I updated the policy and the response is:result = s3.get_bucket_policy(Bucket=bucket_name)pprint(result[“Policy”])('{“Version”: “2012-10-17”, “Statement”: [{“Sid”: “Sentinel Hub permissions”, ’'“Effect”: “Allow”, “Principal”: {“AWS”: ’‘“arn:aws:iam::ddf4c98b5e6647f0a246f0624c8341d9:root”}, “Action”: [“s3:"], ’'“Resource”: [“arn:aws:s3:::JensContainer2”, ’'"arn:aws:s3:::JensContainer2/”]}]}’)But in Request Builder i get this error “Bucket does not exist”.Does this mean, that the connection to the cloud is okay ?What could be the most likely next thing to check ?Best wishes! 

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S
SentinelHub User
posted in Analysis APIs
S2cloudless post-processing parameters

Hi, I’d like to find right post-processing parameters values without having to do lots of tests (and then compare the results). I didn’t found any table in documentation. In the notebook, one can find these values for 10m Sentinel-2 bands : threshold=0.4, average_over=4, dilation_size=2. But on this forum, i read “average_over=22, dilation_size=11” (still for 10m resolution images). I suppose I should use the ones from the notebook (which is ~2 years newer), but is there any table with up-to-date parameters values for multiple resolutions out there ? Thanks !

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S
SentinelHub User
posted in Analysis APIs
Não consigo utilizar a api pelo javascript

olá, não consigo gerar as imagens através da api utilizando o javascript. Quando utilizo o cURL consigo normalmente, mas com o javascript não consigo de jeito nenhum. Teria como me enviar um código javascript de requisição de imagens NDVI?

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SentinelHub User
posted in Analysis APIs
Sentinel and Planet TCI image difference

We created TCI images from sentinel via stacking RGB bands and scaling the values and similarly for the planet image downloading the analytic product and stacking the RGB bands after scaling them. We find stark differences in the appearance of TCI images from sentinel, Planet, and Planet thumbnail for Caofedian region [ 38°55’46.20"N, 118°31’3.17"E] for the date 2018-09-22. Could you let us know what could be the possible issue here that the planet thumbnail and planet TCI images are so different given that all the images are of the same date?Planet Thumbnail image of Caofeidian Planet TCI image of Caofeidian Sentinel TCI image of Caofeidian

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SentinelHub User
posted in Analysis APIs
CustomOAuth2Error

I seriously don’t get why I keep getting such an error constantly. My trial account expires in 28 days. This is its current status This is the same error I get literally every time I execute something: . The HTML report shows the same error. PS: I am positive I set up every thing correctly ! I am in a desperate need for help !

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SentinelHub User
posted in Analysis APIs
MessageAttributes in SNS filter

Hi, We are using the AWS opendata SNS arn to get the newest scenes when they are uploaded.We are not interested in all scenes, only particular Tilegrids. Now with SNS we can filter on messageAttributes, so placing there a utmzone, latitude or grid would be great for users to not be having to process each new scene.see here: Amazon SNS message filtering - Amazon Simple Notification Servicebut the messageAttribute object of the SNS is empty. Why did sentinelhub choose to not make the SNS messages filterable? Thank you, 

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S
SentinelHub User
posted in Analysis APIs
Timelapse it doesn't seem to retrieve any data

Hello everyone, I wich you all doing well. I’ve been working on incorporating a time-lapse of NDVI (Normalized Difference Vegetation Index) into my WebGIS using the Custom Script Editor. I’ve applied the script provided by Sentinel Hub in the Custom Script Editor, but unfortunately, it doesn’t seem to retrieve any data. I’m wondering if there’s a method or approach to successfully integrate this time-lapse image data into my WebGIS platform thanks

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SentinelHub User
posted in Analysis APIs
How to open jp2 files from DownloadResponse objects

Hi, I’m downloading scene bands from Sentinel Hub using the get_data method of the AwsTileRequest class. I’m passing “decode_data=False” as an argument to get_data, because I want the original jp2 files. After the get_data method returns, I try opening the file but I’m unable to extract the data properly. I’ve tried both of the following methods, and each fails in a different way: rasterio.open(BytesIO(data.content)). rasterio.open(data.content). Can someone point me in the right direction? Please note that I know how to download the numpy files - I don’t need help with that. My issue is with getting the underlying jp2 file. Thanks in advance! P.S Note that I’m using Python 3.10 and rasterio 1.3.3

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SentinelHub User
posted in Analysis APIs
Using request builder to access planet data via my own api key

Hi there, I would like to integrate some commercial data into my web app configured to align with sentinel’s OCG services. But before I purchase a package, I would like to test the feasibility with minimum cost. So I came up with the following approach: I will use the request builder to order some planet scope images, but using my own api key created several years ago when I registered at Planet Lab with an ‘Education and Research Standard (PlanetScope)’ account. I have 25 km square quota every month. When I clicked ‘prepare’, it says ‘you don’t have sufficient permission for this action, please contact support’. It looks like this api key is not what the request builder is expecting, and the request builder only takes those keys offered with package purchasing. I’m wondering if I could use, or at least test with, my own api key. I think my question is related to this post: Accessing Plant data. It would be great if you help me solve this. Thank you very much1

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SentinelHub User
posted in Analysis APIs
Processing API request

Greetings to all! I hope everyone is doing well. I am currently utilizing the Processing API within my VSCode environment to retrieve images. I’ve also incorporated a function into the script to determine the minimum and maximum values. Please note that I’m not using the Sentinel Hub editor; the code has been integrated directly into my VSCode setup. const CLIENT_ID = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxx"; const CLIENT_SECRET = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"; const fromDate = "2020-07-01T00:00:00.000Z"; const toDate = "2020-09-01T00:00:00.000Z"; const dataset = "S2L1C"; // NDVI image let minVal = 1; let maxVal = -1; // Function to update min and max values function updateMinMaxValues(val) { if (val < minVal) minVal = val; if (val > maxVal) maxVal = val; } const evalscript = ` //VERSION=3 //This script was converted from v1 to v3 using the converter API //NDVI EVALSCRIPT if (dataMask == 0) return [0,0,0,0]; //ndvi var val = (B08-B04)/(B08+B04); // =====

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