Search Results for author: Christopher Wiedeman

Found 4 papers, 2 papers with code

Photon-counting CT using a Conditional Diffusion Model for Super-resolution and Texture-preservation

no code implementations25 Feb 2024 Christopher Wiedeman, Chuang Niu, Mengzhou Li, Bruno De Man, Jonathan S Maltz, Ge Wang

Ultra-high resolution images are desirable in photon counting CT (PCCT), but resolution is physically limited by interactions such as charge sharing.

Denoising Disentanglement +1

Decorrelative Network Architecture for Robust Electrocardiogram Classification

1 code implementation19 Jul 2022 Christopher Wiedeman, Ge Wang

We propose a novel ensemble approach based on feature decorrelation and Fourier partitioning for teaching networks diverse complementary features, reducing the chance of perturbation-based fooling.

Adversarial Attack Adversarial Defense +2

Disrupting Adversarial Transferability in Deep Neural Networks

1 code implementation27 Aug 2021 Christopher Wiedeman, Ge Wang

Furthermore, we show how applying a feature correlation loss, which decorrelates the extracted features in a latent space, can reduce the transferability of adversarial attacks between models, suggesting that the models complete tasks in semantically different ways.

Adversarial Attack Feature Correlation

Simultaneous reconstruction of the initial pressure and sound speed in photoacoustic tomography using a deep-learning approach

no code implementations23 Jul 2019 Hongming Shan, Christopher Wiedeman, Ge Wang, Yang Yang

Photoacoustic tomography seeks to reconstruct an acoustic initial pressure distribution from the measurement of the ultrasound waveforms.

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