Multilevel Subsampling of Principal Component Projections for Adaptive Compressive Sensing (CROSBI ID 706422)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Vlašić, Tin ; Seršić, Damir
engleski
Multilevel Subsampling of Principal Component Projections for Adaptive Compressive Sensing
This paper examines the performance of principal- component-analysis (PCA) projections in compressive sensing (CS). Observed signals are assumed to follow a Gaussian distribution and have the asymptotic sparsity property in a wavelet transform domain. In order to exploit these signal priors, we propose multilevel subsampling of PCA projections in addition to sparsity-promoting $\ell_1$ regularization. The PCA projections are subsampled in levels that correspond to different wavelet scales. The proposed method outperforms universal random projections of standard CS for noise-corrupted measurement setups and compressible signals. Experimental results from simulations conducted on images from the MNIST dataset prove the framework's robustness and good reconstruction ability.
compressive sensing ; inverse problem ; principal component analysis ; sampling theory ; sparse signal recovery
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Podaci o prilogu
29-35.
2021.
objavljeno
10.1109/ISPA52656.2021.9552127
Podaci o matičnoj publikaciji
Proceedings of the 12th International Symposium on Image and Signal Processing and Analysis (ISPA 2021)
Lončarić, Sven ; Petković, Tomislav ; Petrinović, Davor
Zagreb: Sveučilište u Zagrebu
Podaci o skupu
12th International Symposium on Image and Signal Processing and Analysis (ISPA 2021)
predavanje
13.09.2021-15.09.2021
Zagreb, Hrvatska