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VSainteuf / pastis-benchmark

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Band description #19

Open irisdum opened 1 year ago

irisdum commented 1 year ago

Hi, I have a few questions on the Sentinel 2 bands. I would like to know in which order are they stored. Looking at the input bands, it looks like they are stored in order of wavelength. However, I have some doubts on the Sentinel 2 band 8 (stored at index 6, I think). Indeed, this band from Sentinel 2 is at 10 m resolution. However, on some patch time series, the band 8 has an odd aspect. I have displayed two examples : This example is a “normal” patch time series. The band at the index 6 appears at 10m resolution. In this image (each column is a different band)

ex_6

In the second image, the band at index 6 has an odd aspect, like it was over sampled by a KNN :

ex_2

I was wondering what could cause this effect. Best regards,

watercore2001 commented 1 year ago

I have the same question, looking forward to the answer

VSainteuf commented 1 year ago

Hi there, Yes indeed the bands are stored in wavelength order. As per the artefact on index 6, I don't really know what this could be. Probably something that happens in the L2A processing pipeline. For PASTIS the only processing applied on the images is bilinear upsampling on the 20m bands. Cheers