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In this paper, we present XctDiff, an algorithm framework for reconstructing CT from a single radiograph, which decomposes the reconstruction process into two easily controllable tasks: feature extraction and CT reconstruction.…

图像与视频处理 · 电气工程与系统科学 2024-06-17 Qingze Bai , Tiange Liu , Zhi Liu , Yubing Tong , Drew Torigian , Jayaram Udupa

In this paper, we propose a diffusion-based unsupervised framework that incorporates physically explainable Retinex theory with diffusion models for low-light image enhancement, named LightenDiffusion. Specifically, we present a…

计算机视觉与模式识别 · 计算机科学 2024-07-15 Hai Jiang , Ao Luo , Xiaohong Liu , Songchen Han , Shuaicheng Liu

For real-world BCI applications, lightweight Electroencephalography (EEG) systems offer the best cost-deployment balance. However, such spatial sparsity of EEG limits spatial fidelity, hurting learning and introducing bias. EEG spatial…

多媒体 · 计算机科学 2026-02-24 Hongjun Liu , Leyu Zhou , Zijianghao Yang , Chao Yao

Ionizing radiation has been the biggest concern in CT imaging. To reduce the dose level without compromising the image quality, low-dose CT reconstruction has been offered with the availability of compressed sensing based reconstruction…

图像与视频处理 · 电气工程与系统科学 2025-11-14 Mehmet Ozan Unal , Metin Ertas , Isa Yildirim

The clinical application of cone-beam computed tomography (CBCT) is constrained by the inherent trade-off between radiation exposure and image quality. Ultra-sparse angular sampling, employed to reduce dose, introduces severe undersampling…

计算机视觉与模式识别 · 计算机科学 2026-02-10 Junlin Wang , Jiancheng Fang , Peng Peng , Shaoyu Wang , Qiegen Liu

Sparse-view Computed Tomography (CT) image reconstruction is a promising approach to reduce radiation exposure, but it inevitably leads to image degradation. Although diffusion model-based approaches are computationally expensive and suffer…

图像与视频处理 · 电气工程与系统科学 2024-03-15 Hanyu Chen , Zhixiu Hao , Lin Guo , Liying Xiao

This paper introduces innovative solutions to enhance spatial controllability in diffusion models reliant on text queries. We first introduce vision guidance as a foundational spatial cue within the perturbed distribution. This…

计算机视觉与模式识别 · 计算机科学 2024-12-02 Zipeng Qi , Guoxi Huang , Chenyang Liu , Fei Ye

In medical imaging, the diffusion models have shown great potential for synthetic image generation tasks. However, these approaches often lack the interpretable connections between the generated and real images and can create anatomically…

图像与视频处理 · 电气工程与系统科学 2026-02-12 Jian-Qing Zheng , Yuanhan Mo , Yang Sun , Jiahua Li , Fuping Wu , Ziyang Wang , Tonia Vincent , Bartłomiej W. Papież

Super-resolution is widely used in medical imaging to enhance low-quality data, reducing scan time and improving abnormality detection. Conventional super-resolution approaches typically rely on paired datasets of downsampled and original…

计算机视觉与模式识别 · 计算机科学 2026-02-18 Xiaoyi Wen , Fei Jiang

Diffusion and flow-based models have enabled significant progress in generation tasks across various modalities and have recently found applications in predictive learning. However, unlike typical generation tasks that encourage sample…

计算机视觉与模式识别 · 计算机科学 2026-03-24 Yu Zhang , Xingzhuo Guo , Haoran Xu , Jialong Wu , Mingsheng Long

Single image super-resolution (SISR) aims to reconstruct high-resolution (HR) images from the given low-resolution (LR) ones, which is an ill-posed problem because one LR image corresponds to multiple HR images. Recently, learning-based…

计算机视觉与模式识别 · 计算机科学 2021-05-19 Haoying Li , Yifan Yang , Meng Chang , Huajun Feng , Zhihai Xu , Qi Li , Yueting Chen

Despite the indispensable role of X-ray computed tomography (CT) in diagnostic medicine field, the associated ionizing radiation is still a major concern considering that it may cause genetic and cancerous diseases. Decreasing the exposure…

图像与视频处理 · 电气工程与系统科学 2021-06-09 Ti Bai , Dan Nguyen , Biling Wang , Steve Jiang

The resurgence of deep neural networks has created an alternative pathway for low-dose computed tomography denoising by learning a nonlinear transformation function between low-dose CT (LDCT) and normal-dose CT (NDCT) image pairs. However,…

图像与视频处理 · 电气工程与系统科学 2022-11-04 Sutanu Bera , Prabir Kumar Biswas

Snapshot compressive spectral imaging reconstruction aims to reconstruct three-dimensional spatial-spectral images from a single-shot two-dimensional compressed measurement. Existing state-of-the-art methods are mostly based on deep…

图像与视频处理 · 电气工程与系统科学 2024-08-27 Zongliang Wu , Ruiying Lu , Ying Fu , Xin Yuan

We introduce Mediffusion -- a new method for semi-supervised learning with explainable classification based on a joint diffusion model. The medical imaging domain faces unique challenges due to scarce data labelling -- insufficient for…

计算机视觉与模式识别 · 计算机科学 2024-11-15 Joanna Kaleta , Paweł Skierś , Jan Dubiński , Przemysław Korzeniowski , Kamil Deja

Super resolution techniques can enhance the spatial resolution of remote sensing images, enabling more efficient large scale earth observation applications. While single image SR methods enhance low resolution images, they neglect valuable…

计算机视觉与模式识别 · 计算机科学 2025-09-30 Ce Wang , Wanjie Sun

Computed tomography (CT) reconstruction from X-ray projections acquired within a limited angle range is challenging, especially when the angle range is extremely small. Both analytical and iterative models need more projections for…

图像与视频处理 · 电气工程与系统科学 2021-11-18 Ce Wang , Haimiao Zhang , Qian Li , Kun Shang , Yuanyuan Lyu , Bin Dong , S. Kevin Zhou

Low-dose CT (LDCT) reduces radiation exposure but introduces protocol-dependent noise and artifacts that vary across institutions. While federated learning enables collaborative training without centralizing patient data, existing methods…

图像与视频处理 · 电气工程与系统科学 2026-03-17 Anas Zafar , Muhammad Waqas , Amgad Muneer , Rukhmini Bandyopadhyay , Jia Wu

Low-dose CT (LDCT) imaging attracted a considerable interest for the reduction of the object's exposure to X-ray radiation. In recent years, supervised deep learning (DL) has been extensively studied for LDCT image reconstruction, which…

图像与视频处理 · 电气工程与系统科学 2022-10-06 Qiaoqiao Ding , Hui Ji , Yuhui Quan , Xiaoqun Zhang

Sparse views X-ray computed tomography has emerged as a contemporary technique to mitigate radiation dose. Because of the reduced number of projection views, traditional reconstruction methods can lead to severe artifacts. Recently,…

计算机视觉与模式识别 · 计算机科学 2024-09-04 Liutao Yang , Jiahao Huang , Guang Yang , Daoqiang Zhang