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Point clouds captured by scanning sensors are often perturbed by noise, which have a highly negative impact on downstream tasks (e.g. surface reconstruction and shape understanding). Previous works mostly focus on training neural networks…

计算机视觉与模式识别 · 计算机科学 2025-10-30 Junsheng Zhou , Xingyu Shi , Haichuan Song , Yi Fang , Yu-Shen Liu , Zhizhong Han

Low-dose computed tomography (LDCT) scans, which can effectively alleviate the radiation problem, will degrade the imaging quality. In this paper, we propose a novel LDCT reconstruction network that unrolls the iterative scheme and performs…

图像与视频处理 · 电气工程与系统科学 2020-08-04 Wenjun Xia , Zexin Lu , Yongqiang Huang , Zuoqiang Shi , Yan Liu , Hu Chen , Yang Chen , Jiliu Zhou , Yi Zhang

Denoising of clinical CT images is an active area for deep learning research. Current clinically approved methods use iterative reconstruction methods to reduce the noise in CT images. Iterative reconstruction techniques require multiple…

图像与视频处理 · 电气工程与系统科学 2020-07-10 Mayank Patwari , Ralf Gutjahr , Rainer Raupach , Andreas Maier

While diffusion models have set a new benchmark for quality in Low-Dose Computed Tomography (LDCT) denoising, their clinical adoption is critically hindered by extreme computational costs, with inference times often exceeding thousands of…

计算机视觉与模式识别 · 计算机科学 2025-09-30 Tangtangfang Fang , Jingxi Hu , Xiangjian He , Jiaqi Yang

The Noise2Noise method allows for training machine learning-based denoisers with pairs of input and target images where both the input and target can be noisy. This removes the need for training with clean target images, which can be…

计算机视觉与模式识别 · 计算机科学 2026-01-01 Andrew Tinits , Stephen Mann

We present an end-to-end deep learning approach to denoising speech signals by processing the raw waveform directly. Given input audio containing speech corrupted by an additive background signal, the system aims to produce a processed…

音频与语音处理 · 电气工程与系统科学 2018-09-18 Francois G. Germain , Qifeng Chen , Vladlen Koltun

The lack of large-scale noisy-clean image pairs restricts supervised denoising methods' deployment in actual applications. While existing unsupervised methods are able to learn image denoising without ground-truth clean images, they either…

计算机视觉与模式识别 · 计算机科学 2022-03-23 Yi Zhang , Dasong Li , Ka Lung Law , Xiaogang Wang , Hongwei Qin , Hongsheng Li

Medical image denoising is essential for improving image quality while minimizing the exposure of sensitive information, particularly when working with large-scale clinical datasets. This study explores distributed deep learning for…

计算机视觉与模式识别 · 计算机科学 2026-01-13 Sulaimon Oyeniyi Adebayo , Ayaz H. Khan

Utilizing a low-dose CT approach significantly reduces the radiation exposure for patients, yet it introduces challenges, such as increased noise and artifacts in the resultant images, which can hinder accurate medical diagnostics.…

图像与视频处理 · 电气工程与系统科学 2024-04-03 Helena Shawn , Thompson Chyrikov , Jacob Lanet , Lam-chi Chen , Jim Zhao , Christina Chajo

LDCT has drawn major attention in the medical imaging field due to the potential health risks of CT-associated X-ray radiation to patients. Reducing the radiation dose, however, decreases the quality of the reconstructed images, which…

图像与视频处理 · 电气工程与系统科学 2022-04-19 Zhizhong Huang , Junping Zhang , Yi Zhang , Hongming Shan

Model based iterative reconstruction (MBIR) algorithms for low-dose X-ray CT are computationally expensive. To address this problem, we recently proposed a deep convolutional neural network (CNN) for low-dose X-ray CT and won the second…

机器学习 · 统计学 2018-03-29 Eunhee Kang , Jaejun Yoo , Jong Chul Ye

Compared with traditional seismic noise attenuation algorithms that depend on signal models and their corresponding prior assumptions, removing noise with a deep neural network is trained based on a large training set, where the inputs are…

地球物理 · 物理学 2019-07-23 Siwei Yu , Jianwei Ma , Wenlong Wang

This paper studies 3D low-dose computed tomography (CT) imaging. Although various deep learning methods were developed in this context, typically they focus on 2D images and perform denoising due to low-dose and deblurring for…

图像与视频处理 · 电气工程与系统科学 2024-01-10 Zhihao Chen , Chuang Niu , Qi Gao , Ge Wang , Hongming Shan

Diffusion magnetic resonance imaging (dMRI) plays a vital role in both clinical diagnostics and neuroscience research. However, its inherently low signal-to-noise ratio (SNR), especially under high diffusion weighting, significantly…

定量方法 · 定量生物学 2026-02-27 Jine Xie , Zhicheng Zhang , Yunwei Chen , Yanqiu Feng , Xinyuan Zhang

Image segmentation is a fundamental problem in medical image analysis. In recent years, deep neural networks achieve impressive performances on many medical image segmentation tasks by supervised learning on large manually annotated data.…

计算机视觉与模式识别 · 计算机科学 2018-01-26 Ling Zhang , Vissagan Gopalakrishnan , Le Lu , Ronald M. Summers , Joel Moss , Jianhua Yao

In this paper, we tackle the problem of enhancing real-world low-light images with significant noise in an unsupervised fashion. Conventional unsupervised learning-based approaches usually tackle the low-light image enhancement problem…

图像与视频处理 · 电气工程与系统科学 2022-03-29 Wei Xiong , Ding Liu , Xiaohui Shen , Chen Fang , Jiebo Luo

We show that denoising of 3D point clouds can be learned unsupervised, directly from noisy 3D point cloud data only. This is achieved by extending recent ideas from learning of unsupervised image denoisers to unstructured 3D point clouds.…

计算机视觉与模式识别 · 计算机科学 2019-10-21 Pedro Hermosilla , Tobias Ritschel , Timo Ropinski

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

Deep learning (DL) shows promise of advantages over conventional signal processing techniques in a variety of imaging applications. The networks' being trained from examples of data rather than explicitly designed allows them to learn…

图像与视频处理 · 电气工程与系统科学 2023-09-27 Obaidullah Rahman , Ken D. Sauer , Madhuri Nagare , Charles A. Bouman , Roman Melnyk , Jie Tang , Brian Nett

Noise and artifacts are intrinsic to low dose CT (LDCT) data acquisition, and will significantly affect the imaging performance. Perfect noise removal and image restoration is intractable in the context of LDCT due to the statistical and…

医学物理 · 物理学 2019-07-24 Wenchao Du , Hu Chen , Peixi Liao , Hongyu Yang , Ge Wang , Yi Zhang