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math.NA2025
A Bijective Image Retargeting Algorithm Based on Conformal Energy
Chengyang Liu, Michael K. Ng
Image retargeting, which resizes images to one with a prescribed aspect ratio by determining an optimal warping map, has gained substantial interest in imaging science. Despite sig…
math.NA2024
A -preconditioner for space fractional diffusion equation with non-separable variable coefficients
Xue-Lei Lin, Michael K. Ng
In this paper, we study a -matrix approximation based preconditioner for the linear systems arising from discretization of unsteady state Riesz space fractional diffusion equat…