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Hyperspectral remote sensing data compression with neural networks

Citation Author(s):
Sebastia Mijares i Verdu, Johannes Balle, Valero Laparra, Joan Bartrina Rapesta, Miguel Hernandez-Cabronero, Joan Serra-Sagrista
Submitted by:
Sebastia Mijare...
Last updated:
3 March 2022 - 2:54pm
Document Type:
Presentation Slides
Document Year:
Sebastia Mijares i Verdu

We propose a novel approach to compress hyperspectral remote sensing images using convo- lutional neural networks, aimed at producing compression results competitive with common lossy compression standards such as JPEG 2000 and CCSDS 122.1-B-1 with a system far less complex than equivalent neural-network codecs used for natural images. Our method consists of a collection of smaller networks which compress the image band-by-band taking advantage of the very high similarity between bands on certain intervals. This approach is far less computationally complex than using a conventional neural-network codec, and we show it is effective on AVIRIS images, where we trained models that can match or surpass JPEG 2000 by around 1.5 dB at rates below 0.15 bps for uncalibrated data, and which surpass CCSDS 122.1-B-1 by up to around 5 dB across all rates.

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