Add Enhanced RGB ratio visualization (Sentinel-1) - #371
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Add Enhanced RGB ratio visualization (Sentinel-1)#371azlinszkysinergise wants to merge 4 commits into
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New sentinel-1/enhanced_rgb_ratio script: adapts the classic S1 RGB-ratio composite (R=VV, G=VH, B=VH/VV) with a Reinhard tone-mapping curve that lifts the mid-range and compresses highlights, so dense cities keep their internal structure instead of clipping to white and vegetation reads clearly green. Includes a compact/minified variant for shareable Browser links, a README with a transfer-function comparison graphic, and the sentinel-1.md index line. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Sentinel-1 acquires HH+HV rather than VV+VH over the poles and much of the open ocean, and a band name in setup() cannot be chosen per scene, so DH data needs its own evalscript. Adds dh_monthly.js as a third tab, documents it in the README, and updates the example to the Munich scene shown in fig1. Also tidies script.js: plain array input form, saturate() parameter no longer shadows the sample name, and the invalid-pixel comment now matches the code (no data is transparent, degenerate backscatter is black, as in the standard RGB-ratio composite).
…ings Adds an IW HH+HV example and a DH monthly mosaic example, both over the Canadian Arctic. Neither token was in cdse_lookup, so S1_AWS_IW_HHHV and S1_MOSAIC_DH are added to _layouts/script.html - without them the Copernicus Browser links resolve to an empty dataset id. Renames dh_monthly.js to dh.js, since the script suits IW and EW HH+HV acquisitions as well as the DH mosaics.
EO Browser is discontinued in favour of Copernicus Browser, so the remaining EOB platform entry is removed and the example is CDSE-only. The tone curve is described as scaled rather than extended, matching the script comments: the textbook extended Reinhard operator is a different formula.
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New sentinel-1/enhanced_rgb_ratio script: adapts the classic S1 RGB-ratio composite (R=VV, G=VH, B=VH/VV) with a Reinhard tone-mapping curve that lifts the mid-range and compresses highlights, so dense cities keep their internal structure instead of clipping to white and vegetation reads clearly green. Includes a compact/minified variant for shareable Browser links, a README with a transfer-function comparison graphic, and the sentinel-1.md index line.
Created by claude ,promted/checked/developed by @azlinszkysinergise