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aysim / dynnet

Implementation of 'DynamicEarthNet: Daily Multi-Spectral Satellite Dataset for Semantic Change Segmentation' [CVPR 2022]
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The bands of Planet imagery #6

Closed MartinPernus closed 7 months ago

MartinPernus commented 7 months ago

Hi! Thank you for your wonderful work.

I am trying to understand the band content of DEN Planet imagery. When reading with rasterio library, an individual file consists of 9 bands. This is confusing to me since the PlanetScope imagery should consist of 8 bands. Could you elaborate?

aysim commented 7 months ago

Hello! Thanks :)

We provide a fusion monitoring product from Planet Labs, equipped with four channels (RGB + NIR). I'm uncertain about the data you're referring to that includes nine bands. Could you please provide more details?

MartinPernus commented 7 months ago

Hey,

An example folder planet/54N/22E-198N/7312_3008_13consists of two folders, PF-QA and PF-SR, where each directory contains TIF files with 9 bands and 4 bands, respectively. What is the data with 9 channels?

aysim commented 7 months ago

Sorry for the confusion, as indicated by the training/test splits, the image data (4-channels) is the surface reflectance product (PF-SR). PF-QA, the planet's quality assurance product, consists of 9 channels indicating the raw and gap-filled portions of the data. You can find more information in our supplementary material or in the product's technical specification.

MartinPernus commented 7 months ago

Thank you!!