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stac-extensions / eo

Covers electro-optical data that represents a snapshot of the Earth. It could consist of cloud cover and multiple spectral bands, for example visible bands, infrared bands, red edge bands and panchromatic bands.
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Need for short alphabetical id to map common band names #13

Closed remtav closed 10 months ago

remtav commented 2 years ago

Common band names are a very interesting sensor-agnostic way to refer to band names and hopefully will become a standard in the eo community.

To further encourage the use of these common names, short alphabetical id for each common name could be relevant. Here's a suggested mapping:

Common Name Common Name Id Band Range (μm) Landsat 5/7 Landsat 8 Sentinel 2 MODIS NAIP
coastal Co 0.40 - 0.45 1 1
blue B 0.45 - 0.50 1 2 2 3 3
green G 0.50 - 0.60 2 3 3 4 2
red R 0.60 - 0.70 3 4 4 1 1
yellow Y 0.58 - 0.62
pan P 0.50 - 0.70 8 (L7 only) 8
rededge Re 0.70 - 0.79 5, 6, 7
nir N 0.75 - 1.00 4 8 2 4
nir08 N08 0.75 - 0.90 5 8a
nir09 N09 0.85 - 1.05 9
cirrus Ci 1.35 - 1.40 9 10 26
swir16 S16 1.55 - 1.75 5 6 11 6
swir22 S22 2.10 - 2.30 7 7 12 7
lwir L 10.5 - 12.5 6
lwir11 L11 10.5 - 11.5 10 31
lwir12 L12 11.5 - 12.5 11 32
ymoisan commented 2 years ago

This comes in handy when one wants to cram as much information in a file (or variable) name and still keep the name somewhat sort.

m-mohr commented 1 year ago

Why would this be needed in the STAC extension specification itself? Can't this easily be mapped in applications?

matthewhanson commented 1 year ago

Discussed in STAC sprint

@m-mohr to create draft PR for v2.0 of this extension which will remove eo:bands for compliance with upcoming STAC 1.1 - see https://github.com/radiantearth/stac-spec/pull/1254