Date post: | 11-Apr-2017 |
Category: |
Technology |
Upload: | safe-software |
View: | 154 times |
Download: | 1 times |
Remote Sensing Data - Instant
Home Delivery
Landsat (NASA)
Sentinel (ESA)
Planet
UrtheCast
Who is using satellite imagery?
1. Government
2. Intelligence agencies
3. Environmental
4. Data analytics
5. Agriculture
6. Disaster management
7. Humanitarian
8. Monitoring assets and resources
Landsat (NASA/USGS) Sentinel 2 (ESA) Planet UrtheCast (Future)
Resolution 15/30/100m 10/20/60m 3-5m* 0.5 - 5 m
Status Free Free Paid Paid
Frequency Monthly Weekly (or better) Daily A few times a day
Compare
● Landsat (NASA)
● Nexrad (weather)
● NAIP (agriculture)
● Mapzen Terrain Tiles (elevation)
● GDELT (society)
● Sentinel-2 (ESA)
● Many more
Accessing Satellite Imagery
Planet
✔ Daily ✔ Paid (California is free) ✔ Medium resolution
• Access via API key
• Satellite groups
o RapidEye (RE)
o PlanetScope (PS)
o Landsat 8
o Sentinel-2
• Assets
o Visual (RGB24)
o Analytic (RGBNir64)+Red Edge with RE
o UDM (unusable data mask) (bit mask shown as UINT8)
UDM raster (unusable data mask)
Planet Reader
• JSON helpful for advanced queries, e.g. {"type":"AndFilter","config":[{"type":"RangeFilter","field_name":"cloud_cover","config":{"lte":@Evaluate($(CLOUDCOVERAGE)/100)}},{"type":"RangeFilter","field_name":"black_fill","config":{"lte":@Evaluate($(BLACKFILL)/100)}}]}
• First read might take a few minutes, but then it’s cached
• Delivered as GeoTIFF
Sentinel-2 ✔ Weekly ✔ Free ✔ Medium-low resolution
Sentinel 2 Bands
Sentinel-2 on AWS Reader
Tip: FeatureReader lets you do preprocessing
Landsat 8 ✔ Monthly ✔ Free ✔ Low resolution
Landsat 8 Bands
Landsat 8 Useful Band Combinations
Landsat on AWS Reader (coming soon!)
Web transformers (for now)
Example: Landsat Download Assistant Made by FME
UrtheCast (Coming Soon)
✔ Insanely Frequent ✔ Paid ✔ Insanely High-Res
Today’s visit
Today’s visit
What to do with this imagery
Examples: Useful Transformations
● Integrate with other sources (maps, 3D models)
● Compare images over time
● Perform raster analysis (e.g. NDVI, feature extraction)
● Live basemap / WMTS
● Add new imagery to database as it becomes available
Satellite imagery draped over a DEM or LiDAR scan lets you visualize the landscape in 3D.
3D Visualization
Tip: Publish workspaces to FME Cloud for better performance.
Over to FME
3D model with RGB/NIR/NDVI texture
3D model with RGB/NIR/NDVI texture
Flight over Lower Mainland: https://youtu.be/0m2FVyz5U28
Landsat (NASA/USGS) Sentinel 2 (ESA) Planet UrtheCast (Future)
Resolution 15/30/100m 10/20/60m 3-5m* 0.5 - 5 m
Status Free Free Paid Paid
Frequency Monthly Weekly (or better) Daily A few times a day
Choices!
To sum up: Remote Sensing is awesome.
● Lots of options for satellite imagery, depending on your needs.
● Read directly from the cloud and process in FME. ● Use transformers to make basemaps, models, perform
analysis, and more.
Questions?
Blog: fme.ly/planet
Blog: fme.ly/eo
Tutorials: knowledge.safe.com
Landsat/Sentinel downloader: playground.fmeserver.com