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31 July 2023 Optimization of compression algorithm for snapshot mosaic hyperspectral images based on CCSDS 123 standard
Xu Zeng, Haowen Huang, Deyuan Lv, Min Zeng, Yongfu Ping, Shibi Wei, Xudong Luo, Zhigang Zhao
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Proceedings Volume 12747, Third International Conference on Optics and Image Processing (ICOIP 2023); 127471G (2023) https://doi.org/10.1117/12.2689173
Event: Third International Conference on Optics and Image Processing (ICOIP 2023), 2023, Hangzhou, China
Abstract
In this paper, the compression algorithm recommended by the Consultative Committee on Space Data System (CCSDS) 123 standard is optimized according to the spectral correlation of snapshot mosaic hyperspectral images (SSM HSI) to achieve a higher compression ratio. A novel inter-spectral processing module is added to the predictor to calculate the inter-spectral correlation between each spectral band of the hyperspectral image. The required one-dimensional spectral neighborhoods for prediction are selected based on the highest to lowest correlation order, which allow more accurate prediction of the current sample. This approach improves the efficiency of compression. The optimization was performed for Fast Lossless (FL) predictor with sample adaptive encoder recommended by CCSDS-123.0-B-1 standard, FL Extended (FLEX) predictor with sample adaptive encoder, and hybrid encoder recommended by CCSDS-123.0-B-2 standard, respectively, to compare the compression ratio before and after optimization. The results showed that the compression performance was improved by 0.015%-3.1%, 0.01%-2.29% and 0.01%-1.95% respectively. Further optimization with larger compression ratio could be realized by parameters adjustment of the algorithm proposed in this paper.
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Xu Zeng, Haowen Huang, Deyuan Lv, Min Zeng, Yongfu Ping, Shibi Wei, Xudong Luo, and Zhigang Zhao "Optimization of compression algorithm for snapshot mosaic hyperspectral images based on CCSDS 123 standard", Proc. SPIE 12747, Third International Conference on Optics and Image Processing (ICOIP 2023), 127471G (31 July 2023); https://doi.org/10.1117/12.2689173
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KEYWORDS
Hyperspectral imaging
Image compression
Mathematical optimization
Image quality standards
Image processing
Remote sensing
Unmanned aerial vehicles
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