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Cone Beam Computed Tomography (CBCT) plays a key role in dental diagnosis and surgery. However, the metal teeth implants could bring annoying metal artifacts during the CBCT imaging process, interfering diagnosis and downstream processing…

Image and Video Processing · Electrical Eng. & Systems 2024-04-19 Yuxuan Shi , Jun Xu , Dinggang Shen

Artifacts in kilo-Voltage CT (kVCT) imaging degrade image quality, impacting clinical decisions. We propose a deep learning framework for metal artifact reduction (MAR) and domain transformation from kVCT to Mega-Voltage CT (MVCT). The…

Computer Vision and Pattern Recognition · Computer Science 2025-06-25 Mubashara Rehman , Niki Martinel , Michele Avanzo , Riccardo Spizzo , Christian Micheloni

Low-dose dental cone beam computed tomography (CBCT) has been increasingly used for maxillofacial modeling. However, the presence of metallic inserts, such as implants, crowns, and dental filling, causes severe streaking and shading…

Image and Video Processing · Electrical Eng. & Systems 2022-02-09 Chang Min Hyun , Taigyntuya Bayaraa , Hye Sun Yun , Tae Jun Jang , Hyoung Suk Park , Jin Keun Seo

Metal implants and other high-density objects in patients introduce severe streaking artifacts in CT images, compromising image quality and diagnostic performance. Although various methods were developed for CT metal artifact reduction over…

Image and Video Processing · Electrical Eng. & Systems 2024-01-10 Zilong Li , Qi Gao , Yaping Wu , Chuang Niu , Junping Zhang , Meiyun Wang , Ge Wang , Hongming Shan

Deep learning based approaches have been used to improve image quality in cone-beam computed tomography (CBCT), a medical imaging technique often used in applications such as image-guided radiation therapy, implant dentistry or…

Computer Vision and Pattern Recognition · Computer Science 2024-03-28 Mohammadreza Amirian , Daniel Barco , Ivo Herzig , Frank-Peter Schilling

We introduce Duoduo CLIP, a model for 3D representation learning that learns shape encodings from multi-view images instead of point clouds. The choice of multi-view images allows us to leverage 2D priors from off-the-shelf CLIP models to…

Computer Vision and Pattern Recognition · Computer Science 2025-03-21 Han-Hung Lee , Yiming Zhang , Angel X. Chang

Metal Artifacts creates often difficulties for a high quality visual assessment of post-operative imaging in {c}omputed {t}omography (CT). A vast body of methods have been proposed to tackle this issue, but {these} methods were designed for…

Computer Vision and Pattern Recognition · Computer Science 2021-04-27 Wang Zihao , Vandersteen Clair , Demarcy Thomas , Gnansia Dan , Raffaelli Charles , Guevara Nicolas , Delingette Herve

Metal artifact reduction (MAR) is a challenging problem in computed tomography (CT) imaging. A popular class of MAR methods replace sinogram measurements that are corrupted by metal with artificial data. While these ``projection…

Medical Physics · Physics 2021-01-27 T. Humphries , J. Wang

Metal artifacts, caused by high-density metallic implants in computed tomography (CT) imaging, severely degrade image quality, complicating diagnosis and treatment planning. While existing deep learning algorithms have achieved notable…

Computer Vision and Pattern Recognition · Computer Science 2025-08-15 Farid Tasharofi , Fuxin Fan , Melika Qahqaie , Mareike Thies , Andreas Maier

Industry standards require medical device manufacturers to perform implant-induced artefact testing in phantoms at a pre-clinical stage to define the extent of artefacts that can be expected during MRI. Once a device is commercially…

Medical Physics · Physics 2023-06-19 Guy Fierens , Joris Walraevens , Ronald Peeters , Christ Glorieux , Nicolas Verhaert

Metal artifacts in computed tomography (CT) images can significantly degrade image quality and impede accurate diagnosis. Supervised metal artifact reduction (MAR) methods, trained using simulated datasets, often struggle to perform well on…

Image and Video Processing · Electrical Eng. & Systems 2025-01-28 Chenglong Ma , Zilong Li , Yuanlin Li , Jing Han , Junping Zhang , Yi Zhang , Jiannan Liu , Hongming Shan

Metal artifacts in computed tomography (CT) severely degrade image quality, compromising diagnostic accuracy and radiotherapy planning, especially in cancer patients with high-density implants. We propose H3D-MarNet, a two-stage framework…

Computer Vision and Pattern Recognition · Computer Science 2026-05-13 Mubashara Rehman , Niki Martinel , Michele Avanzo , Riccardo Spizzo , Christian Micheloni

A conventional approach to computed tomography (CT) or cone beam CT (CBCT) metal artifact reduction is to replace the X-ray projection data within the metal trace with synthesized data. However, existing projection or sinogram completion…

Image and Video Processing · Electrical Eng. & Systems 2022-03-24 Haofu Liao , Wei-An Lin , Zhimin Huo , Levon Vogelsang , William J. Sehnert , S. Kevin Zhou , Jiebo Luo

The integration of artificial intelligence (AI) with radiology marks a transformative era in medicine. Vision foundation models have been adopted to enhance radiologic imaging analysis. However, the distinct complexities of radiologic 2D…

Computer Vision and Pattern Recognition · Computer Science 2025-05-30 Zhixiu Lu , Hailong Li , Nehal A. Parikh , Jonathan R. Dillman , Lili He

Solving multi-label recognition (MLR) for images in the low-label regime is a challenging task with many real-world applications. Recent work learns an alignment between textual and visual spaces to compensate for insufficient image labels,…

Computer Vision and Pattern Recognition · Computer Science 2022-06-22 Ximeng Sun , Ping Hu , Kate Saenko

Current deep neural network based approaches to computed tomography (CT) metal artifact reduction (MAR) are supervised methods that rely on synthesized metal artifacts for training. However, as synthesized data may not accurately simulate…

Image and Video Processing · Electrical Eng. & Systems 2019-12-02 Haofu Liao , Wei-An Lin , S. Kevin Zhou , Jiebo Luo

Metal implants in MRI cause severe artifacts that degrade image quality and hinder clinical diagnosis. Traditional approaches address metal artifact reduction (MAR) and accelerated MRI acquisition as separate problems. We propose MASC, a…

Computer Vision and Pattern Recognition · Computer Science 2026-02-03 Zhengyi Lu , Ming Lu , Chongyu Qu , Junchao Zhu , Junlin Guo , Marilyn Lionts , Yanfan Zhu , Yuechen Yang , Tianyuan Yao , Jayasai Rajagopal , Bennett Allan Landman , Xiao Wang , Xinqiang Yan , Yuankai Huo

Metal artifact reduction (MAR) is one of the most important research topics in computed tomography (CT). With the advance of deep learning technology for image reconstruction,various deep learning methods have been also suggested for metal…

Image and Video Processing · Electrical Eng. & Systems 2020-07-08 Junghyun Lee , Jawook Gu , Jong Chul Ye

With the increasing adoption of video anomaly detection in intelligent surveillance domains, conventional visual-based detection approaches often struggle with information insufficiency and high false-positive rates in complex environments.…

Computer Vision and Pattern Recognition · Computer Science 2025-06-03 Peng Wu , Wanshun Su , Guansong Pang , Yujia Sun , Qingsen Yan , Peng Wang , Yanning Zhang

Recently, prompt learning has demonstrated remarkable success in adapting pre-trained Vision-Language Models (VLMs) to various downstream tasks such as image classification. However, its application to the downstream Image-Text Retrieval…

Computer Vision and Pattern Recognition · Computer Science 2025-08-07 Yifan Wang , Tao Wang , Chenwei Tang , Caiyang Yu , Zhengqing Zang , Mengmi Zhang , Shudong Huang , Jiancheng Lv