Search Results for author: Siqi Ye

Found 5 papers, 1 papers with code

Model-based Reconstruction with Learning: From Unsupervised to Supervised and Beyond

no code implementations26 Mar 2021 Zhishen Huang, Siqi Ye, Michael T. McCann, Saiprasad Ravishankar

Many techniques have been proposed for image reconstruction in medical imaging that aim to recover high-quality images especially from limited or corrupted measurements.

Dictionary Learning Image Reconstruction

Unified Supervised-Unsupervised (SUPER) Learning for X-ray CT Image Reconstruction

no code implementations6 Oct 2020 Siqi Ye, Zhipeng Li, Michael T. McCann, Yong Long, Saiprasad Ravishankar

The proposed learning formulation combines both unsupervised learning-based priors (or even simple analytical priors) together with (supervised) deep network-based priors in a unified MBIR framework based on a fixed point iteration analysis.

Computed Tomography (CT) Image Reconstruction

Momentum-Net for Low-Dose CT Image Reconstruction

no code implementations27 Feb 2020 Siqi Ye, Yong Long, Il Yong Chun

We also investigated the spectral normalization technique that applies to image refining NN learning to satisfy the nonexpansive NN property; however, experimental results show that this does not improve the image reconstruction performance of Momentum-Net.

Image Denoising Image Reconstruction

SUPER Learning: A Supervised-Unsupervised Framework for Low-Dose CT Image Reconstruction

no code implementations26 Oct 2019 Zhipeng Li, Siqi Ye, Yong Long, Saiprasad Ravishankar

Recent works have shown the promising reconstruction performance of methods such as PWLS-ULTRA that rely on clustering the underlying (reconstructed) image patches into a learned union of transforms.

Clustering Image Reconstruction +1

SPULTRA: Low-Dose CT Image Reconstruction with Joint Statistical and Learned Image Models

1 code implementation27 Aug 2018 Siqi Ye, Saiprasad Ravishankar, Yong Long, Jeffrey A. Fessler

The SPULTRA algorithm has a similar computational cost per iteration as its recent counterpart PWLS-ULTRA that uses post-log measurements, and it provides better image reconstruction quality than PWLS-ULTRA, especially in low-dose scans.

Signal Processing Image and Video Processing Optimization and Control Medical Physics

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