研究目的
To improve the performance of storage and transmission of massive hyperspectral data through a prediction-based spatial-spectral adaptive hyperspectral compressive sensing (PSSAHCS) algorithm.
研究成果
The PSSAHCS algorithm effectively compresses and reconstructs hyperspectral images with strong denoising performance, outperforming SSCS, BHCS, and AGDCS in terms of PSNR, spatial autocorrelation, and spectral correlation.
研究不足
The study focuses on hyperspectral images of camellia sinensis and may not generalize to other types of hyperspectral data. The performance of the PSSAHCS algorithm is compared against SSCS, BHCS, and AGDCS, but not against all existing methods.
1:Experimental Design and Method Selection:
The PSSAHCS algorithm involves spatial block size determination based on spatial self-correlation coefficient, k-means clustering for spectral grouping, LMLSD for key band selection, linear prediction for non-key bands, Gaussian measurement matrix for sampling, DCT as sparse basis, and StOMP for reconstruction.
2:Sample Selection and Data Sources:
Hyperspectral images of 12 pieces of camellia sinensis with a resolution of 128 ×
3:List of Experimental Equipment and Materials:
2 A visible and near-infrared hyperspectral imaging system including an imaging spectrograph, a CCD camera (C8484-05, Hamamatsu City, Japan), a lens, two 150 W quartz tungsten halogen lamps, and V10E software.
4:Experimental Procedures and Operational Workflow:
Spatial correlation analysis, spectral grouping, key band selection, linear prediction, compression using Gaussian matrix, and reconstruction using StOMP.
5:Data Analysis Methods:
Evaluation based on PSNR, spatial autocorrelation coefficient, spectral curve comparison, and spectral correlation.
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