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- W4313367312 abstract "A flexible transform-based tensor product named ★QT-product for Lth-order (L≥3) quaternion tensors is proposed. Based on the ★QT-product, we define the corresponding singular value decomposition named TQt-SVD and the rank named TQt-rank of the Lth-order (L≥3) quaternion tensor. Furthermore, with orthogonal quaternion transformations, the TQt-SVD can provide the best TQt-rank-s approximation of any Lth-order (L≥3) quaternion tensor. On the other side, since a color pixel with RGB channels can be well encoded as a pure quaternion, the proposed TQt-SVD, therefore, becomes a new mathematical tool for many color image processing tasks. In the experiments, we have verified the effectiveness of the proposed TQt-SVD in the application of the best TQt-rank-s approximation for color videos represented by third-order quaternion tensors." @default.
- W4313367312 created "2023-01-06" @default.
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- W4313367312 date "2023-05-01" @default.
- W4313367312 modified "2023-09-25" @default.
- W4313367312 title "Quaternion tensor singular value decomposition using a flexible transform-based approach" @default.
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- W4313367312 doi "https://doi.org/10.1016/j.sigpro.2022.108910" @default.
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