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math.NA2022★ 1 cited
Bypassing the quadrature exactness assumption of hyperinterpolation on the sphere
Congpei An, Hao-Ning Wu
This paper focuses on the approximation of continuous functions on the unit sphere by spherical polynomials of degree via hyperinterpolation. Hyperinterpolation of degree i…
eess.IV2022★ 11 cited
Enhanced total variation minimization for stable image reconstruction
Congpei An, Hao-Ning Wu, Xiaoming Yuan
The total variation (TV) regularization has phenomenally boosted various variational models for image processing tasks. We propose to combine the backward diffusion process in the…