Content-based leukocyte image retrieval ensembling quaternion fourier transform and gabor-wavelet features

Sarkar, Prabir; Chakraborty, Chandan; Ghosh, Monidipa

doi:10.1109/isda.2012.6416562

2012 12th International Conference on Intelligent Systems Design and Applications (ISDA) 2012

DOI: 10.1109/isda.2012.6416562

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Content-based leukocyte image retrieval ensembling quaternion fourier transform and gabor-wavelet features

Prabir Sarkar

Chandan Chakraborty

Monidipa Ghosh

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2022

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Denoising Method of Nuclear Signal Based on Sparse Representation

Sun

et al. 2022

Front. Energy Res.

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Nuclear signals are sensitive to noise which may affect final monitoring results significantly. In order to suppress the nuclear signal noise, a sparse representation method, which is based on the sparse representation of signals and a matching pursuit algorithm, has been proposed for denoising. Time–frequency matching “atoms” have been selected for building an over-complete library by training atoms matching with the characteristics of nuclear signals regardless of the noise. The best time–frequency matching atoms have been extracted by sparsely representing the noisy signals with an Orthogonal Matching Pursuit (OMP) algorithm and the library. The residual ratio threshold has been chosen as a stopping criterion in the OMP algorithm for avoiding the influence of improper selection of iterations on denoising results. At the end, the pulse matching the atom extracted by each iteration has been optimized by performing effective sparse representation on the original noiseless nuclear signal component in noisy nuclear signals. The proposed method has been used to denoise the simulated and measured signals and has been compared with the nuclear denoising result using traditional wavelet theory. The results show that the proposed method can accurately suppress the noise interference of nuclear signals, and the denoising effect is better than that of the traditional wavelet method.

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Denoising Method of Nuclear Signal Based on Sparse Representation

Sun

et al. 2022

Front. Energy Res.

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Content-based leukocyte image retrieval ensembling quaternion fourier transform and gabor-wavelet features

Cited by 1 publication

References 19 publications

Denoising Method of Nuclear Signal Based on Sparse Representation

Denoising Method of Nuclear Signal Based on Sparse Representation

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