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Medical imaging applications are highly specialized in terms of human anatomy, pathology, and imaging domains. Therefore, annotated training datasets for training deep learning applications in medical imaging not only need to be highly…

计算机视觉与模式识别 · 计算机科学 2024-09-10 Arjun Krishna , Ge Wang , Klaus Mueller

Low-dose computed tomography (LDCT) is an important topic in the field of radiology over the past decades. LDCT reduces ionizing radiation-induced patient health risks but it also results in a low signal-to-noise ratio (SNR) and a potential…

图像与视频处理 · 电气工程与系统科学 2022-10-03 Wenjun Xia , Qing Lyu , Ge Wang

Diffusion Probabilistic Models (DPMs) have been recently utilized to deal with various blind image restoration (IR) tasks, where they have demonstrated outstanding performance in terms of perceptual quality. However, the task-specific…

计算机视觉与模式识别 · 计算机科学 2025-10-07 Magauiya Zhussip , Iaroslav Koshelev , Stamatis Lefkimmiatis

Out-of-distribution detection is crucial to the safe deployment of machine learning systems. Currently, unsupervised out-of-distribution detection is dominated by generative-based approaches that make use of estimates of the likelihood or…

Reducing the radiation dose in computed tomography (CT) is important to mitigate radiation-induced risks. One option is to employ a well-trained model to compensate for incomplete information and map sparse-view measurements to the CT…

图像与视频处理 · 电气工程与系统科学 2023-03-29 Xiaoyue Li , Kai Shang , Gaoang Wang , Mark D. Butala

Recent advances in denoising diffusion probabilistic models have shown great success in image synthesis tasks. While there are already works exploring the potential of this powerful tool in image semantic segmentation, its application in…

计算机视觉与模式识别 · 计算机科学 2023-09-19 Xinrong Hu , Yu-Jen Chen , Tsung-Yi Ho , Yiyu Shi

It can be challenging to identify brain MRI anomalies using supervised deep-learning techniques due to anatomical heterogeneity and the requirement for pixel-level labeling. Unsupervised anomaly detection approaches provide an alternative…

图像与视频处理 · 电气工程与系统科学 2023-08-30 Hasan Iqbal , Umar Khalid , Jing Hua , Chen Chen

Denoising diffusion probabilistic models (DDPMs) have achieved high quality image generation without adversarial training, yet they require simulating a Markov chain for many steps to produce a sample. To accelerate sampling, we present…

机器学习 · 计算机科学 2022-10-07 Jiaming Song , Chenlin Meng , Stefano Ermon

Segmentation masks of pathological areas are useful in many medical applications, such as brain tumour and stroke management. Moreover, healthy counterfactuals of diseased images can be used to enhance radiologists' training files and to…

图像与视频处理 · 电气工程与系统科学 2024-10-02 Alessandro Fontanella , Grant Mair , Joanna Wardlaw , Emanuele Trucco , Amos Storkey

Reconstruction-based methods have been commonly used for unsupervised anomaly detection, in which a normal image is reconstructed and compared with the given test image to detect and locate anomalies. Recently, diffusion models have shown…

计算机视觉与模式识别 · 计算机科学 2024-04-30 Di Wu , Shicai Fan , Xue Zhou , Li Yu , Yuzhong Deng , Jianxiao Zou , Baihong Lin

Denoising Diffusion Probabilistic Models (DDPMs) have recently achieved remarkable results in conditional and unconditional image generation. The pre-trained models can be adapted without further training to different downstream tasks, by…

计算机视觉与模式识别 · 计算机科学 2023-09-19 Asya Grechka , Guillaume Couairon , Matthieu Cord

This paper presents a RePaint-enhanced framework that integrates a pre-trained performance-guided denoising diffusion probabilistic model (DDPM) for performance- and parameter-constraint engineering design generation. The proposed method…

机器学习 · 计算机科学 2026-02-03 Ke Wang , Nguyen Gia Hien Vu , Yifan Tang , Mostafa Rahmani Dehaghani , G. Gary Wang

We propose the Binary Diffusion Probabilistic Model (BDPM), a generative framework specifically designed for data representations in binary form. Conventional denoising diffusion probabilistic models (DDPMs) assume continuous inputs, use…

计算机视觉与模式识别 · 计算机科学 2025-10-01 Vitaliy Kinakh , Slava Voloshynovskiy

We introduce the state-of-the-art deep learning Denoising Diffusion Probabilistic Model (DDPM) as a method to infer the volume or number density of giant molecular clouds (GMCs) from projected mass surface density maps. We adopt…

星系天体物理 · 物理学 2023-06-28 Duo Xu , Jonathan C. Tan , Chia-Jung Hsu , Ye Zhu

Sparse-view computed tomography (CT) can be used to reduce radiation dose greatly but is suffers from severe image artifacts. Recently, the deep learning based method for sparse-view CT reconstruction has attracted a major attention.…

图像与视频处理 · 电气工程与系统科学 2022-11-21 Wenjun Xia , Wenxiang Cong , Ge Wang

We present a masked-guided approach for a denoising diffusion probabilistic model (DDPM) trained to generate and inpaint realistic radio galaxy images. The inpainting capability is particularly relevant for reconstructing incomplete…

星系天体物理 · 物理学 2026-05-26 Rémi Poitevineau , Emma Tolley , Verlon Etsebeth

In radio astronomy, signals from radio telescopes are transformed into images of observed celestial objects, or sources. However, these images, called dirty images, contain real sources as well as artifacts due to signal sparsity and other…

天体物理仪器与方法 · 物理学 2023-08-30 Ruoqi Wang , Zhuoyang Chen , Qiong Luo , Feng Wang

Diffusion models have recently exhibited remarkable abilities to synthesize striking image samples since the introduction of denoising diffusion probabilistic models (DDPMs). Their key idea is to disrupt images into noise through a fixed…

计算机视觉与模式识别 · 计算机科学 2023-03-28 Zijian Zhang , Zhou Zhao , Jun Yu , Qi Tian

Denoising Diffusion Probabilistic Models (DDPM) have recently gained significant attention. DDPMs compose a Markovian process that begins in the data domain and gradually adds noise until reaching pure white noise. DDPMs generate…

计算机视觉与模式识别 · 计算机科学 2024-07-09 Shady Abu-Hussein , Raja Giryes

Sodium MRI is an imaging technique used to visualize and quantify sodium concentrations in vivo, playing a role in many biological processes and potentially aiding in breast cancer characterization. Sodium MRI, however, suffers from…