Articles with "improved sparse" as a keyword



Improved sparse representation algorithm for optical coherence tomography images

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Published in 2022 at "International Journal of Imaging Systems and Technology"

DOI: 10.1002/ima.22711

Abstract: An improved sparse representation algorithm is proposed for reducing speckle noise in optical coherence tomography (OCT) images. To reduce the dictionary training time, the orthogonal matching pursuit algorithm (OMP) is replaced by a piecewise orthogonal… read more here.

Keywords: optical coherence; improved sparse; representation algorithm; sparse representation ... See more keywords

SEDNA: An Improved Sparse Array Design for Reduced Mutual Coupling and Enhanced DOA Estimation Accuracy

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Published in 2025 at "IEEE Signal Processing Letters"

DOI: 10.1109/lsp.2025.3583112

Abstract: The super enhanced dilated nested array (SEDNA) is a new improved sparse linear array (SLA) design that is achieved by hole filling, adjusting the inter-sensor spacing (ISS), and splitting the array. The proposed SEDNA utilizes… read more here.

Keywords: mutual coupling; array; dilated nested; design ... See more keywords