swot and user needs workshop, dlr oberpfaffenhofen, 5-6 july 2006 hyressa - hyperspectral remote...
TRANSCRIPT
![Page 1: SWOT and User Needs Workshop, DLR Oberpfaffenhofen, 5-6 July 2006 HYRESSA - HYperspectral REmote Sensing in Europe specific Support Actions Data Processing](https://reader036.vdocument.in/reader036/viewer/2022062417/551ab06e550346856e8b4e23/html5/thumbnails/1.jpg)
SWOT and User Needs Workshop, DLR Oberpfaffenhofen, 5-6 July 2006
HYRESSA - HYperspectral REmote Sensing in Europe specific Support Actions
Data Processing
Eduardo de Miguel
Remote Sensing Laboratory
INTA - Spain
![Page 2: SWOT and User Needs Workshop, DLR Oberpfaffenhofen, 5-6 July 2006 HYRESSA - HYperspectral REmote Sensing in Europe specific Support Actions Data Processing](https://reader036.vdocument.in/reader036/viewer/2022062417/551ab06e550346856e8b4e23/html5/thumbnails/2.jpg)
SWOT and User Needs Workshop, DLR Oberpfaffenhofen, 5-6 July 2006
HYRESSA - HYperspectral REmote Sensing in Europe specific Support Actions
Introduction
• Data processing = Data calibration + quality control + data transformation + information retrieval
• Both at user side and provider side
![Page 3: SWOT and User Needs Workshop, DLR Oberpfaffenhofen, 5-6 July 2006 HYRESSA - HYperspectral REmote Sensing in Europe specific Support Actions Data Processing](https://reader036.vdocument.in/reader036/viewer/2022062417/551ab06e550346856e8b4e23/html5/thumbnails/3.jpg)
SWOT and User Needs Workshop, DLR Oberpfaffenhofen, 5-6 July 2006
HYRESSA - HYperspectral REmote Sensing in Europe specific Support Actions
Data Processing
• Usual DP tasks at provider side:– Radiometric calibration – Geometric correction– Atmospheric correction (might be included in
radiometric correction)– Evaluating product accuracy (quality control)
• Unusual DP tasks at provider side:– Data transformations (PCA, MNF, spectral
resampling…)
![Page 4: SWOT and User Needs Workshop, DLR Oberpfaffenhofen, 5-6 July 2006 HYRESSA - HYperspectral REmote Sensing in Europe specific Support Actions Data Processing](https://reader036.vdocument.in/reader036/viewer/2022062417/551ab06e550346856e8b4e23/html5/thumbnails/4.jpg)
SWOT and User Needs Workshop, DLR Oberpfaffenhofen, 5-6 July 2006
HYRESSA - HYperspectral REmote Sensing in Europe specific Support Actions
Data Processing
• Usual DP tasks at user side:– Data transformations– Endmember selection – Spectral unmixing, spectral matching...– Classification– Feature detection– Running models– …
![Page 5: SWOT and User Needs Workshop, DLR Oberpfaffenhofen, 5-6 July 2006 HYRESSA - HYperspectral REmote Sensing in Europe specific Support Actions Data Processing](https://reader036.vdocument.in/reader036/viewer/2022062417/551ab06e550346856e8b4e23/html5/thumbnails/5.jpg)
SWOT and User Needs Workshop, DLR Oberpfaffenhofen, 5-6 July 2006
HYRESSA - HYperspectral REmote Sensing in Europe specific Support Actions
Standard tools
– Radiometric calibration: linear models– Geometric correction: direct geo-referencing– Atmospheric correction: MODTRAN and
relatives (ATCOR, ACORN, FLAASH), ATREM, vicarious calibration (empirical line)
– Temperature/emissivity separation: TES, others??
![Page 6: SWOT and User Needs Workshop, DLR Oberpfaffenhofen, 5-6 July 2006 HYRESSA - HYperspectral REmote Sensing in Europe specific Support Actions Data Processing](https://reader036.vdocument.in/reader036/viewer/2022062417/551ab06e550346856e8b4e23/html5/thumbnails/6.jpg)
SWOT and User Needs Workshop, DLR Oberpfaffenhofen, 5-6 July 2006
HYRESSA - HYperspectral REmote Sensing in Europe specific Support Actions
Standard tools
– Spectral tools: …– Transforms: … – Classification: …– Filters and convolutions: …
(See ENVI as show-case of standard tools)
![Page 7: SWOT and User Needs Workshop, DLR Oberpfaffenhofen, 5-6 July 2006 HYRESSA - HYperspectral REmote Sensing in Europe specific Support Actions Data Processing](https://reader036.vdocument.in/reader036/viewer/2022062417/551ab06e550346856e8b4e23/html5/thumbnails/7.jpg)
SWOT and User Needs Workshop, DLR Oberpfaffenhofen, 5-6 July 2006
HYRESSA - HYperspectral REmote Sensing in Europe specific Support Actions
Standard tools
– Quality control & accuracy measures: ??– Metadata definition: none (ISO19115??)– Metadata documentation/distribution: none– Data inventory/catalogues: none
![Page 8: SWOT and User Needs Workshop, DLR Oberpfaffenhofen, 5-6 July 2006 HYRESSA - HYperspectral REmote Sensing in Europe specific Support Actions Data Processing](https://reader036.vdocument.in/reader036/viewer/2022062417/551ab06e550346856e8b4e23/html5/thumbnails/8.jpg)
SWOT and User Needs Workshop, DLR Oberpfaffenhofen, 5-6 July 2006
HYRESSA - HYperspectral REmote Sensing in Europe specific Support Actions
SWOT
• Strengths and Weakness (I)– Geo-registration procedures satisfactory. (It is
re-sampling correctly addressed?)– Radiometric/atmospheric correction is often
close to 5% error in reflectance units.– Reporting geometric accuracy is not clear.– Reporting radiometric accuracy requires
ground spectra / temperature.
![Page 9: SWOT and User Needs Workshop, DLR Oberpfaffenhofen, 5-6 July 2006 HYRESSA - HYperspectral REmote Sensing in Europe specific Support Actions Data Processing](https://reader036.vdocument.in/reader036/viewer/2022062417/551ab06e550346856e8b4e23/html5/thumbnails/9.jpg)
SWOT and User Needs Workshop, DLR Oberpfaffenhofen, 5-6 July 2006
HYRESSA - HYperspectral REmote Sensing in Europe specific Support Actions
SWOT
• Strengths and Weakness (II)– BRDF effects (and emission angular effects)
are still outside of the standard processing pipeline.
– Temperature/Emissivity algorithms far from being operational.
– Metadata are not provided in a regular basis nor in a standard way
![Page 10: SWOT and User Needs Workshop, DLR Oberpfaffenhofen, 5-6 July 2006 HYRESSA - HYperspectral REmote Sensing in Europe specific Support Actions Data Processing](https://reader036.vdocument.in/reader036/viewer/2022062417/551ab06e550346856e8b4e23/html5/thumbnails/10.jpg)
SWOT and User Needs Workshop, DLR Oberpfaffenhofen, 5-6 July 2006
HYRESSA - HYperspectral REmote Sensing in Europe specific Support Actions
![Page 11: SWOT and User Needs Workshop, DLR Oberpfaffenhofen, 5-6 July 2006 HYRESSA - HYperspectral REmote Sensing in Europe specific Support Actions Data Processing](https://reader036.vdocument.in/reader036/viewer/2022062417/551ab06e550346856e8b4e23/html5/thumbnails/11.jpg)
SWOT and User Needs Workshop, DLR Oberpfaffenhofen, 5-6 July 2006
HYRESSA - HYperspectral REmote Sensing in Europe specific Support Actions
Developments
• A review of DP topics in the 2004 EARSel SIG IS workshop and the 2006 IGARSS.– Endmember extraction, spectral unmixing,
advanced classification procedures…– BRDF modelling– Compression– Others– Nothing on quality/accuracy measures and
metadata
![Page 12: SWOT and User Needs Workshop, DLR Oberpfaffenhofen, 5-6 July 2006 HYRESSA - HYperspectral REmote Sensing in Europe specific Support Actions Data Processing](https://reader036.vdocument.in/reader036/viewer/2022062417/551ab06e550346856e8b4e23/html5/thumbnails/12.jpg)
SWOT and User Needs Workshop, DLR Oberpfaffenhofen, 5-6 July 2006
HYRESSA - HYperspectral REmote Sensing in Europe specific Support Actions
Discussion Points
• It is geometric resampling a problem?• How to evaluate the geometric accuracy?• Which is the way to reduce the 5% error in
atmospheric correction? • Should the spectral unmixing be performed at
the provider side? (it is affected by instrument features, like PSF and spatial sampling)
![Page 13: SWOT and User Needs Workshop, DLR Oberpfaffenhofen, 5-6 July 2006 HYRESSA - HYperspectral REmote Sensing in Europe specific Support Actions Data Processing](https://reader036.vdocument.in/reader036/viewer/2022062417/551ab06e550346856e8b4e23/html5/thumbnails/13.jpg)
SWOT and User Needs Workshop, DLR Oberpfaffenhofen, 5-6 July 2006
HYRESSA - HYperspectral REmote Sensing in Europe specific Support Actions
Discussion Points
• It is worth to put effort on data compression?• When will be BRDF correction a common
practice?• What is the users feeling about metadata?• …• (Your entry here)