Google Earth Engine Tutorial: Sentinel 2 Cloud Masking and Export it to Google Drive

Google Earth Engine Tutorials, Sentinel 2 Cloud Masking and Export it to Google Drive. This video will show you how to apply cloud masking function using the Sentinel-2 image. After that, export it to Google Drive.
Sentinel 2 TOA: developers.google.com/earth-e...
Earth Engine Doc: developers.google.com/earth-e...
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[@dannypan4143]

Thank you very much for sharing. The video and code are completely free. This is very helpful for us. Please keep going.

[@INSGIS]

Thanks.. please correct me if i made some mistakes.

[@jacobokomo1880]

Thank you INS GIS for your wonderful tutorial,This was very useful and saved a lot of time and researcch. -Thank you

[@htetyaminkoko1404]

Thank you for this amazing tutorial.

[@angelabastidas1464]

Muchas gracias, le entendí y me salió muy bien 😊

[@IchalGeo]

Mantapp wajib coba ini.. Keren

[@INSGIS]

Silakan bro. Free to use 👍

[@sabrinakarim9012]

Thank you so much for this nice tutorial but I have a question : why you use median function instead of mean function or max function or others?

[@sdtamarinera]

Hi, thanks for the video. When I plot the dates one by one I can see several images full of clouds. Why is this?

[@Sevenoria]

Mas mau nanya, kan hasil combine citranya pakai median function tuh, apakah ada fungsi lain untuk combinenya? misal di arcgis ada mean, last, first. atau kalau mau lihat list fungsinya bagian ini dmn ya? terima kasih videonya

[@davidappiah-gyimah1063]

The video is helpful, I would like to know if the cloud mask function automatically performs an atmospheric correction , or does the atmospheric correction have to be done differently?

[@ArkaMallik]

Thanks for sharing. Would you please let me know what the "Min/max" option that you applied to the image in QGIS, exactly does?

[@INSGIS]

Hi, thanks for coming. Sorry I couldn't explain it in terms of theory, this explanation based on technical experience. Min and max are part of image visualization parameters. Without given input (min/max), your image will be visualized by default, where is EE will show the first band on the list (RGB). However, the min/max input value depends on your image product. In my case, I used Landsat 8 TOA which is that has a value from 0 - 1 (float type). 0 - 0.5 value, just assume that will give 'ideal' visualization. For instance, If you try 0 - 1 it will give you more 'dark' and if you try 0 - 0.3, it will give more 'light'. Just try it.

[@sabbahamunandar3996]

Maaf pak mau nanya... saya menemukan code untuk cloud masking yg berbeda. code tersebut menggunakan parameter s2cloudless.. perbedaan QA620 dan s2cloudless itu apa yah?

[@debabratagogoi9038]

set Playback speed to 1.5... it will save lot of time

[@Dike93]

Hello, is it possible to get the link of the code?

[@abdulrashidhassan7649]

Thanks so much for this video it is very helpful, but you didnt include the link for your codes.

[@luismorales7270]

The image I downloaded looks the same without the band combintation but when a mix RGB B11, B8 and B4 or (B10,B8,B4); a very fluorescent green colour appears. What can it be? Thanks in advance.

[@INSGIS]

Could you send the result and code to my email? so I could look further.

[@luismorales7270]

@@INSGIS Sure I will, thanks for your reply.

[@abdulrashidhassan7649]

Thanks so much for this video it is very helpful, if i use 'CLOUDY_PIXEL_PERCENTAGE','less_than',20 i have just one image left is it okay please.

[@INSGIS]

well, it's mean you just have 1 image with cloud cover less than 20%.. .

[@amandakiranayudita]

excuse me sir, can you explain to me about the difference between 'custom' and 'stretch' on RGB visualization parameters menu? I've already tried it and the results are different, thank you

[@INSGIS]

Sorry, just read your comment. What do you mean 'different'?

[@amandakiranayudita]

@@INSGIS the color of the images that shows on the screen

[@INSGIS]

Custom means you provide input for min and max value, in other words, you have to know what you need about how the image visualizes. Using stretch could mean, you let EE provide value with a specific parameter option for image visualization.

[@amandakiranayudita]

@@INSGIS Oh I see, thanks a lot Sir! wishing this channel hit big anytime soon

[@achmadathoillah8152]

Ingin bertanya, jika kita ingin mendownload beserta Metadata dari citra satelit nya bagaimana ya?

[@INSGIS]

bisa bg, tapi olahnya tetap per scene jadinya.. sma seperti kita download di situs, misalnya USGS. Ini contoh cara meng-extract citra tanpa kehilangan metadata-nya kzbin.info/www/bejne/h2iwgWmJi86Fb8k

[@yuvrajrathore7497]

Sir, can you please tell me how to export sentinel 1 image in vv band

[@INSGIS]

Sorry man, my bad. By the way, I never worked with Sentinel-1 before.

[@bayuagastiya9905]

kok saya ga bisa inspect di mapnya ya? di klik tetap tidak ter inspect? hanya muncul di console saat saya ketik print () jadi tidak bisa melihat update seperti contoh di atas setiap run codenya, bagaimana solusinya, mohon dibalas..

[@INSGIS]

Bisa kok di inspect bg. Udh di-click inspector tab-nya?

[@user-in5df5md7z]

why is the image I downloaded all black in Arcgis & ENVI

[@INSGIS]

Hopely this video could help you kzbin.info/www/bejne/jIeymqNpqauImKc

[@user-in5df5md7z]

@@INSGIS thank you very much!

[@novitararthayani3696]

permisi bertanya lagi, ini kan pakai band QA60 dalam pemrosesan cloud maskingnya, apabila setelah cloud masking itu yang dipakai hanya band 2,3,4,8 yang notabene itu resolusi 10 meter, apakah tetap bisa muncul 10 meter hasilnya nanti?

[@INSGIS]

Selain fungsi cloud masking, ada fungsi median (di code editor) yang membantu mereduksi pixel awan, dengan meng-komposit-kan semua gambar menjadi 1 dan mengambil nilai tengah setiap pixel di setiap gambarnya. Fungsi median ikut mereduksi resolusi pixel band (yang dipilih). GEE menetapkan proyeksi default untuk proses komposit (termasuk median) yaitu WGS-84 dengan resolusi piksel 1 derajat. Dan pada proses export gambar, kita menentukan properti scale (contoh: 20), dan secara otomatis semua pixel pada setiap band memiliki resolusi 20m.

[@novitararthayani3696]

@@INSGIS jadi jika memakai resolusi 20 saat di GEE, maka saat komposit di aplikasi lain (band 432) di aplikasi ENVI juga tetap resolusinya 20 meter?

[@novitararthayani3696]

@@INSGIS apakah jika scale dalam script tersebut diubah menjadi 10, setiap band akan memiliki resolusi 10 meter? mohon pencerahannya, terimakasih sebelumnya.

[@INSGIS]

Jika memang spesifikasi penggunaannya resolusi 10m dengan komposit band 432, kamu tinggal pilih band dan ubah scale menjadi 10 di GEE-nya. Tapi, kalau menggunakan komposit natural color (432), besar kemungkinan pixel awan akan lebih banyak kelihatan.

[@cristiamailela3574]

Apakah tutorial ini berlaku juga untuk sentinel 2A ? Saya mendownload sentinel 2A, hasil downloadan hanya ada 1 gambar saja dalam format tif, ketika hasil downloadannya di buka di software ArcGis yang muncul hanyalah gambar blank berwarna abu-abu, kira-kira apakah penyebabnya ?

[@INSGIS]

coba lihat ini kak, tapi soundnya jelek. kzbin.info/www/bejne/jIeymqNpqauImKc

[@cristiamailela3574]

@@INSGIS bagaimana cara melihat metadata nya min ?

[@cristiamailela3574]

@@INSGIS Saya mau mendapatkan citra dengan resolusi 10m, scale pada coding sudah saya ganti menjadi 10, tapi setelah di download hasilnya tetap resolusi 20m. Adakah sekiranya cara untuk saya mendapatkan citra dengan resolusi 10m ? Terimakasih sebelumnya

[@INSGIS]

Export aja kak, ganti scalenya ke 10. Kalau yang agak repot pakai Resampling

[@novitararthayani3696]

apakah dalam export itu memang membutuhkan waktu lama untuk bisa dapat file di googledrivenya?

[@INSGIS]

Tergantung ukuran file, semakin besar semakin lama.

[@novitararthayani3696]

@@INSGIS Baik. Terimakasih tutorialnya, sangat bermanfaat.

[@INSGIS]

Sama - sama. Tapi perlu diperhatikan, GEE punya batas pixel yang bsa d export sekaligus. Secara default max: 100 juta pixel, tapi masih bisa dibesarkan, contoh 1e9 (1M)

[@novitararthayani3696]

@@INSGIS nah ternyata setelah di export itu filenya terbagi 4, itu harus diapakan ya? di mozaik?

[@INSGIS]

@@novitararthayani3696 Cek dlu, apakah sudah sesuai dengan yang diproses di GEE? Jika sudah, tinggal mosaic saja. Dokumentasi GEE: "If the output image is large, it will be exported as multiple files. If you are exporting to GeoTIFF(s), the image is split into tiles. The filename of each tile will be in the form baseFilename-yMin-xMin where xMin and yMin are the coordinates of each tile within the overall bounding box of the exported image "