Multilooking: revise Gamma procedure and integrate it into SNAP workflows #77
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The recent workflow modifications require reading the image geometry from the source product. Reading this attribute is currently only supported for Sentinel-1 via the drivers.SAFE class
incidence and image_geometry are needed, which are currently only extracted from Sentinel-1 metadata
Pull Request Test Coverage Report for Build 389
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i.e. 'GROUND_RANGE' instead of 'Ground Range'
johntruckenbrodt
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johntruckenbrodt
changed the title
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Function
snap.geocodewill now compute multilooking factors depending on the image geometry (Slant vs. Ground Range), the image spacing and the target resolution such that the target resolution is approximated but not exceeded. If any of the factors for range and azimuth is larger than 1, an additional multilook node is inserted into the workflow.Multilooking factors for Gamma are now computed such that the target resolution is approximated but never exceeded to preserve more detail for resampling during geocoding.
Both the Snap and Gamma module make use of a new function
ancillary.multilook_factors