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![Page 1: S5: Multitemporal Cloud Detection - WordPress.com · Promoting Earth Observation Services SenSyF Workshop. Madrid. 11 th March 2015 16 • A processor for cloud detection and masking,](https://reader033.vdocument.in/reader033/viewer/2022042322/5f0c24ea7e708231d433f4d9/html5/thumbnails/1.jpg)
Promoting Earth Observation ServicesSenSyF: Sentinels Synergy FrameworkPromoting Earth Observation Services
S5: Multitemporal Cloud DetectionAntonio Ruiz-Verdú, Julia Amorós-López, Luis Gómez-Chova,
Jordi Muñoz-Marí, Gustavo Camps-Valls and José MorenoSenSyF Users WorkshopMadrid. 11th March 2015
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Promoting Earth Observation Services
2SenSyF Workshop. Madrid. 11th March 2015
Service Overview
• Sentinel-2 will provide systematic global coverage at high spatial and temporal resolutions.
• Challenges: advanced approaches are required to handle the incoming time series
• SenSyF Service 5 is intended to demonstrate the Sentinels capabilities for multitemporal applications
• A Multitemporal Cloud Detection (MCD) algorithm was chosen for demonstrating those capabilities
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Promoting Earth Observation Services
3SenSyF Workshop. Madrid. 11th March 2015
Overview of the MCD processorTime series Cloud mask
• Main assumptions: – Land covers change smoothly– Abrupt changes are mainly due to clouds
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Promoting Earth Observation Services
4SenSyF Workshop. Madrid. 11th March 2015
Sentinel-2
• Dedicated 5-day revisit time series of SPOT-4 (February - July 2013), available at ESA’s DUE (Take 5 dataset)
• Landsat-8 time series at 16-day revisit times
Input Test Data
![Page 5: S5: Multitemporal Cloud Detection - WordPress.com · Promoting Earth Observation Services SenSyF Workshop. Madrid. 11 th March 2015 16 • A processor for cloud detection and masking,](https://reader033.vdocument.in/reader033/viewer/2022042322/5f0c24ea7e708231d433f4d9/html5/thumbnails/5.jpg)
Promoting Earth Observation Services
5SenSyF Workshop. Madrid. 11th March 2015
Deployment and testing in SenSyF Sandbox
• MCD processor implemented for 3 options with different degree of parallelizarion
• Image time series dataset (SPOT4-
take5 & Landsat-8) uploaded
• MATLAB functions deployed
• Processor tested
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Promoting Earth Observation Services
6SenSyF Workshop. Madrid. 11th March 2015
Deployment and testing in SenSyF Sandbox
• Demonstration and Validation Tests implemented in 8 SPOT-4 and Landsat-8 time series
• Good results compared with other cloud screening approaches
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Promoting Earth Observation Services
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DT1 ARGENTINA SITE
SPOT-4 TAKE 5 RGB
SenSyF Workshop. Madrid. 11th March 2015
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Promoting Earth Observation Services
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ARGENTINA SITE
SenSyF S5MCD Cloud Mask
SenSyF Workshop. Madrid. 11th March 2015
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Promoting Earth Observation Services
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DT1 ARGENTINA SITE
MULTITEMPORAL L2A SAT.TIF
SenSyF Workshop. Madrid. 11th March 2015
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Promoting Earth Observation Services
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DT1 ARGENTINA SITE
MONOTEMPORAL L2A SAT.TIF
SenSyF Workshop. Madrid. 11th March 2015
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Promoting Earth Observation Services
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ARGENTINA SITE
• Crop lands• Monotemporal
mask fails with cirrus clouds
Deployment and testing in SenSyF Sandbox
SenSyF Workshop. Madrid. 11th March 2015
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Promoting Earth Observation Services
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DT2 ARGENTINA SITE
SPOT-4 TAKE 5 RGB
SenSyF Workshop. Madrid. 11th March 2015
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Promoting Earth Observation Services
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DT2 ARGENTINA SITE
SenSyF S5MCD Cloud Mask
SenSyF Workshop. Madrid. 11th March 2015
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Promoting Earth Observation Services
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DT2 ARGENTINA SITE
MULTITEMPORAL L2A SAT.TIF
SenSyF Workshop. Madrid. 11th March 2015
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Promoting Earth Observation Services
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DT2 ARGENTINA SITE
MONOTEMPORAL L2A SAT.TIF
SenSyF Workshop. Madrid. 11th March 2015
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Promoting Earth Observation Services
16SenSyF Workshop. Madrid. 11th March 2015
• A processor for cloud detection and masking, based on image time series, was successfully implemented in the SenSyFcloud computing framework
• Some key benefits:– The framework allowed us to test computationally demanding versions
of the algorithm – Learning cloud computing usage and capabilities– Possibility to offer service to a big potential user’s community– User’s feedback
Summary
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Promoting Earth Observation ServicesSenSyF: Sentinels Synergy FrameworkPromoting Earth Observation Services
S5: Multitemporal Cloud DetectionAntonio Ruiz-Verdú, Julia Amorós-López, Luis Gómez-Chova,
Jordi Muñoz-Marí, Gustavo Camps-Valls and José MorenoSenSyF Users WorkshopMadrid. 11th March 2015
![Page 18: S5: Multitemporal Cloud Detection - WordPress.com · Promoting Earth Observation Services SenSyF Workshop. Madrid. 11 th March 2015 16 • A processor for cloud detection and masking,](https://reader033.vdocument.in/reader033/viewer/2022042322/5f0c24ea7e708231d433f4d9/html5/thumbnails/18.jpg)
Promoting Earth Observation Services
18SenSyF Workshop. Madrid. 11th March 2015
Deployment and testing in SenSyF Sandboxapplication.xml run.sh
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Promoting Earth Observation Services
19SenSyF Workshop. Madrid. 11th March 2015
Deployment and testing in SenSyF Sandbox
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Promoting Earth Observation Services
20SenSyF Workshop. Madrid. 11th March 2015
Migration to Operational Cloud Environment (OCE)