Search Results for author: Dai-Qiang Chen

Found 5 papers, 0 papers with code

Image denoising based on improved data-driven sparse representation

no code implementations11 Feb 2015 Dai-Qiang Chen

Instead of adopting fixed filters for constructing a tight frame to sparsely model any input image, a data-driven tight frame was proposed for the sparse representation of images, and shown to be very efficient for image denoising very recently.

Image Denoising Image Restoration

Fixed Point Algorithm Based on Quasi-Newton Method for Convex Minimization Problem with Application to Image Deblurring

no code implementations15 Dec 2014 Dai-Qiang Chen

The novel method is derived from the idea of the quasi-Newton method, and the fixed-point algorithms based on the proximity operator, which were widely investigated very recently.

Deblurring

Inexact Alternating Direction Method Based on Newton descent algorithm with Application to Poisson Image Deblurring

no code implementations15 Dec 2014 Dai-Qiang Chen

The recovery of images from the observations that are degraded by a linear operator and further corrupted by Poisson noise is an important task in modern imaging applications such as astronomical and biomedical ones.

Deblurring Image Restoration

Novel variational model for inpainting in the wavelet domain

no code implementations14 May 2013 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.

Image Compression

Fast Linearized Alternating Direction Minimization Algorithm with Adaptive Parameter Selection for Multiplicative Noise Removal

no code implementations14 May 2013 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 field of multiplicative noise removal.

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