53 citations · 144 across the 20 of their papers we have counts for
4 papers · 1 filter
New bounds for circulant Johnson-Lindenstrauss embeddings
Hui Zhang, Lizhi Cheng
This paper analyzes circulant Johnson-Lindenstrauss (JL) embeddings which, as an important class of structured random JL embeddings, are formed by randomizing the column signs of a…
A dual algorithm for a class of augmented convex models
Hui Zhang, Lizhi Cheng, Wotao Yin
Convex optimization models find interesting applications, especially in signal/image processing and compressive sensing. We study some augmented convex models, which are perturbed…
Novel variational model for inpainting in the wavelet domain
Dai-Qiang Chen, Li-Zhi Cheng
Wavelet domain inpainting refers to the process of recovering the missing coefficients during the image compression or transmission stage. Recently, an efficient algorithm framewor…
Fast Linearized Alternating Direction Minimization Algorithm with Adaptive Parameter Selection for Multiplicative Noise Removal
Dai-Qiang Chen, Li-Zhi Cheng
Owing to the edge preserving ability and low computational cost of the total variation (TV), variational models with the TV regularization have been widely investigated in the fiel…