Abstract
The \( L_{1/2} \) regularization has been considered as a more effective relaxation method to approximate the optimal \( L_{0} \) sparse solution than \( L_{1} \) in CS. To improve the recovery performance of \( L_{1/2} \) regularization, this study proposes a multiple sub-wavelet-dictionaries-based adaptive iteratively weighted \( L_{1/2} \) regularization algorithm (called MUSAI-\( L_{1/2} \)), and considering the key rule of the weighted parameter (or regularization parameter) in optimization progress, we propose the adaptive scheme for parameter \( \lambda_{d} \) to weight the regularization term which is a composition of the sub-dictionaries. Numerical experiments confirm that the proposed MUSAI-\( L_{1/2} \) can significantly improve the recovery performance than the previous works.
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Acknowledgements
This research was funded by State Grid Corporation Science and Technology Project (named ‘Research on intelligent patrol and inspection technology of substation robot based on intelligent sensor active collaboration technology’).
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Peng, Q. et al. (2020). An Adaptive Iteratively Weighted Half Thresholding Algorithm for Image Compressive Sensing Reconstruction. In: Liang, Q., Liu, X., Na, Z., Wang, W., Mu, J., Zhang, B. (eds) Communications, Signal Processing, and Systems. CSPS 2018. Lecture Notes in Electrical Engineering, vol 516. Springer, Singapore. https://doi.org/10.1007/978-981-13-6504-1_22
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DOI: https://doi.org/10.1007/978-981-13-6504-1_22
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