The marine infrastructure (offshore platform and offshore wind turbine) and super-resolution models only use RGB bands (B04, B03, B02), while the solar farm, onshore wind turbine, and tree cover models use 9 Sentinel-2 bands (add B05, B06, B07, B08, B11, and B12). With enough high-quality labels, the extra bands do provide slightly improved performance (1-2% gain in our accuracy metric, e.g. from 89% to 91%), but we don't have a detailed comparison or analysis at this time.
Also, all of the models input three or four images of the same location (captured within a few months), with max temporal pooling used at intermediate layers to enable model to synthesize information across the images. This helps a lot, definitely when one image has a section obscured by clouds (so model can use the other images instead), and maybe also when different images provide different information (e.g. shadows going in different directions due to slightly different times of day).
Also, all of the models input three or four images of the same location (captured within a few months), with max temporal pooling used at intermediate layers to enable model to synthesize information across the images. This helps a lot, definitely when one image has a section obscured by clouds (so model can use the other images instead), and maybe also when different images provide different information (e.g. shadows going in different directions due to slightly different times of day).