NASA-IMPACT / veda-backend

Backend services for VEDA
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Tile artifacts in the rendered NO2 dataset #366

Open j08lue opened 5 months ago

j08lue commented 5 months ago

This issue may have been there for a long time, but I only now took a closer look at the tile quality for the NO2 dataset:

https://www.earthdata.nasa.gov/dashboard/data-catalog/no2/explore?projection=mercator%7C%7C&basemapid=satellite&datetime=2016-01-01T00%3A00%3A00.000Z&position=11.845%7C44.8161%7C6.83

These artifacts seem more striking than they need to be:

image image

Also further zoomed out:

image

Tile interpolation issue?

This is how tiles compare that use nearest neighbour or bilinear interpolation - it does not seem to be a tile-level interpolation issue?

https://staging-raster.delta-backend.com/mosaic/cfa5568f19003ffe39f4f05c9a38b481/tiles/WebMercatorQuad/7/67/45?assets=cog_default&resampling=bilinear&bidx=1&color_formula=gamma+r+1.05&colormap_name=rdbu_r&rescale=0%2C15000000000000000

image image

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