Questions tagged [cloudmasking]

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How to remove Landsat stripes

I'm currently working on a script with Landsat 5, 7 and 8 where I apply a cloud mask to each 3 satellite ImageCollections (L5, L7 & L8) and then merge all collections into one. When I display the ...
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41 views

Creating mean image from cloud free images over ROI in GEE for the Landsat SR products

I want to filter all the available cloud-free images of the Landsat series of each year separately and find the mean image in Google Earth Engine. As my ROI is very small, I want images that don't ...
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61 views

I am trying to mask clouds in S2 image collection and then fill null gaps

I am trying to mask clouds in a Sentinel 2 image collection following this procedure: https://developers.google.com/earth-engine/tutorials/community/sentinel-2-s2cloudless#...
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26 views

Cloud Mask Assesment without Reference Cloud Mask

We have a cloud mask but we don't have reference data set to assess its accuracy. Without generating a reference dataset by ourselves is it possible to assess the cloud mask's accuracy?? For example; ...
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Raster sampling: Extracting values from multiband-raster only if no clouds at the sampling points acc. to the Quality-bit-layer (QAI) QGIS 3, Win10

I'd like to extract band values at given points out of a timeseries of tiled Sentinel2-derived 10-band-gtiffs with bottom-of-atmosphere reflectance information (BOA). On the whole there are 6 tiles, ...
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43 views

Generation of snow cover area time series in GEE using MODIS Snow Cover product

My aim is to resample MOD10A1/MYD10A1 to the same scale as that of MOD11A1/MYD11A1, mask the image collection to obtain the best pixels, and finally to obtain the time series plot of the total area ...
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41 views

Displaying the 8-Bit image's bits [closed]

I have an 8-Bit cloud mask derived using cloud masking software from Sentinel-2 L1C and want to visualize each bit separately. Is it possible? If yes, what kind of software can I perform this task? (...
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144 views

Understanding the Cloud Mask in Google Earth Engine

I would like to understand what the logic of this code is (I know that with this code it is possible to mask the pixels classified as cloud and cloud shadow of Landsat 8 images). I'm still having some ...
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27 views

MAJA cloud mask TIFF file comparison with shapefile

I have created could mask using MAJA the result is TIFF file. I have a reference mask file which is a shapefile. I would like to see how accurately MAJA can produce the cloud mask as much as possible. ...
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236 views

Removing Cloud From Landsat 7/8 using Google Earth Engine?

I am beginner in GEE and trying to apply cloud mask in my study area. I found one code and trying to apply in my area: link: https://code.earthengine.google.com/31b5b21913eefdc05563dfec72c4ee08 I am ...
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36 views

Fill/remove holes in cloud shadow mask (Earth Engine)

I did a mask from image collection using SLC band of Sentinel. This mask represent the locations covered by cloud and shadow during the period picked. Now a want fill/remove holes less than 1ha that ...
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230 views

Displaying the cloud free composite of Sentinel2 using s2cloudless in GEE

I applied the tutorial for 'Sentinel-2 Cloud Masking with s2cloudless' and have this script in GEE: https://code.earthengine.google.com/c525b3926841d4953e016e64682a4e5c In this tutorial, I do not ...
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166 views

Cloud masking the Landsat-8 Surface Reflectance product without using GEE

I have a collection of Landsat8 Collection2 Level2 images (surface reflectance) and I would like to cloud mask those images somehow, so I can further make a time series of NDVI and other remote sensor ...
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80 views

Cloud-masked MODIS Albedo in Google Earth Engine

I would like to extract the Albedo values at a certain point. I found an answer in a Stackoverflow post to help my problem and adjusted it. However, I cannot manage to get the cloud-masking to work ...
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83 views

Cloud masking of Sentinel 2 in GEE

I saw this script in GEE website for masking clouds of Sentinel 2 imagery: function maskS2clouds(image) { var qa = image.select('QA60'); // Bits 10 and 11 are clouds and cirrus, respectively. ...
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26 views

GEE :Cloud/Cloud Shadow Masking for Landsat TOA Data

Due to data limitations, I need to use TOA data to extract cloud shadows instead of SR data. Is there any good way? In addition, why is the amount of SR data less than that of TOA? and this is the ...
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142 views

Median vs mean in GEE

I applied the cloud masking on Sentinel 2 imagery in GEE. The original image collection without masking clouds is this: First I tried the script exactly as written at the bottom of this page Sentinel-...