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To navigate medical instruments safely and accurately inside a patient's vascular tree, combining X-ray fluoroscopy with intermittent contrast injections is the gold standard. However, prolonged exposure to ionizing radiation poses health…

Current commercial matrix transducers for 3D DCE-US do not display side-by-side B-mode and contrast-mode images when capturing volumetric data, thus leaving the operator with no position feedback during lengthy acquisitions. The purpose of…

Image and Video Processing · Electrical Eng. & Systems 2020-11-03 Ahmed El Kaffas , Renhui Gong , Samvardhini Sridharan , Rosa Maria Silveira Sigrist , Isabelle Durot , Jürgen K. Willmann , Dimitre Hristov

Temporal comparison of chest X-rays is fundamental to clinical radiology, enabling detection of disease progression, treatment response, and new findings. While vision-language models have advanced single-image report generation and visual…

Computer Vision and Pattern Recognition · Computer Science 2026-02-04 OFM Riaz Rahman Aranya , Kevin Desai

Convolutional blocks have played a crucial role in advancing medical image segmentation by excelling in dense prediction tasks. However, their inability to effectively capture long-range dependencies has limited their performance.…

Image and Video Processing · Electrical Eng. & Systems 2026-03-17 Siddhartha Mallick , Aayushman Ghosh , Jayanta Paul , Jaya Sil

Nighttime UAV tracking faces significant challenges in real-world robotics operations. Low-light conditions not only limit visual perception capabilities, but cluttered backgrounds and frequent viewpoint changes also cause existing trackers…

Computer Vision and Pattern Recognition · Computer Science 2025-10-27 Xuzhao Li , Xuchen Li , Shiyu Hu

To date, endovascular surgeries are performed using the golden standard of Fluoroscopy, which uses ionising radiation to visualise catheters and vasculature. Prolonged Fluoroscopic exposure is harmful for the patient and the clinician, and…

Image and Video Processing · Electrical Eng. & Systems 2023-09-27 Alex Ranne , Yordanka Velikova , Nassir Navab , Ferdinando Rodriguez y Baena

In most modern object detection pipelines, the detection proposals are processed independently given the feature map. Therefore, they overlook the underlying relationships between objects and the surrounding background, which could have…

Computer Vision and Pattern Recognition · Computer Science 2024-12-03 Botao Ren , Botian Xu , Xue Yang , Yifan Pu , Jingyi Wang , Zhidong Deng

In clinical procedures of angioplasty (i.e., open clogged coronary arteries), devices such as balloons and stents need to be placed and expanded in arteries under the guidance of X-ray fluoroscopy. Due to the limitation of X-ray dose, the…

Computer Vision and Pattern Recognition · Computer Science 2022-07-25 Luojie Huang , Yikang Liu , Li Chen , Eric Z. Chen , Xiao Chen , Shanhui Sun

Recently, several studies have shown that utilizing contextual information to perceive target states is crucial for object tracking. They typically capture context by incorporating multiple video frames. However, these naive frame-context…

Computer Vision and Pattern Recognition · Computer Science 2025-01-03 Chenlong Xu , Bineng Zhong , Qihua Liang , Yaozong Zheng , Guorong Li , Shuxiang Song

This work presents a framework for tracking head movements and capturing the movements of the mouth and both the eyebrows in real-time. We present a head tracker which is a combination of a optical flow and a template based tracker. The…

Computer Vision and Pattern Recognition · Computer Science 2011-01-04 E. R. Gast , Michael S. Lew

Modern visual object trackers show impressive results on general targets, yet their performance drops substantially when dealing with scene text. Although currently underexplored, tracking text in videos is essential for dynamic text…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Chenmin Yu , Liu Yu , Daiqing Wu , Gengluo Li , Zeyu Chen , Yu Zhou

Object tracking is a fundamental task in computer vision, requiring the localization of objects of interest across video frames. Diffusion models have shown remarkable capabilities in visual generation, making them well-suited for…

Computer Vision and Pattern Recognition · Computer Science 2024-10-15 Pha Nguyen , Ngan Le , Jackson Cothren , Alper Yilmaz , Khoa Luu

Medical image segmentation plays an important role in clinical decision making, treatment planning, and disease tracking. However, it still faces two major challenges. On the one hand, there is often a ``soft boundary'' between foreground…

Image and Video Processing · Electrical Eng. & Systems 2024-12-12 Mengqi Lei , Haochen Wu , Xinhua Lv , Xin Wang

Recent approaches for high accuracy detection and tracking of object categories in video consist of complex multistage solutions that become more cumbersome each year. In this paper we propose a ConvNet architecture that jointly performs…

Computer Vision and Pattern Recognition · Computer Science 2018-03-08 Christoph Feichtenhofer , Axel Pinz , Andrew Zisserman

Medical image segmentation plays an important role in computer-aided diagnosis. Existing methods mainly utilize spatial attention to highlight the region of interest. However, due to limitations of medical imaging devices, medical images…

Computer Vision and Pattern Recognition · Computer Science 2025-07-17 Jiaxuan Li , Qing Xu , Xiangjian He , Ziyu Liu , Daokun Zhang , Ruili Wang , Rong Qu , Guoping Qiu

3D single object tracking within LIDAR point clouds is a pivotal task in computer vision, with profound implications for autonomous driving and robotics. However, existing methods, which depend solely on appearance matching via Siamese…

Computer Vision and Pattern Recognition · Computer Science 2024-03-26 Shaoyu Sun , Chunyang Wang , Xuelian Liu , Chunhao Shi , Yueyang Ding , Guan Xi

Recent Transformer-based visual tracking models have showcased superior performance. Nevertheless, prior works have been resource-intensive, requiring prolonged GPU training hours and incurring high GFLOPs during inference due to…

Computer Vision and Pattern Recognition · Computer Science 2023-09-07 Qingmao Wei , Guotian Zeng , Bi Zeng

Few-shot object detection is a challenging but realistic scenario, where only a few annotated training images are available for training detectors. A popular approach to handle this problem is transfer learning, i.e., fine-tuning a detector…

Computer Vision and Pattern Recognition · Computer Science 2022-12-12 Ze Yang , Yali Wang , Xianyu Chen , Jianzhuang Liu , Yu Qiao

In minimally invasive endovascular procedures, contrast-enhanced angiography remains the most robust imaging technique. However, it is at the expense of the patient and clinician's health due to prolonged radiation exposure. As an…

Image and Video Processing · Electrical Eng. & Systems 2024-09-11 Alex Ranne , Liming Kuang , Yordanka Velikova , Nassir Navab , Ferdinando Rodriguez y Baena

Flexible endoscope motion tracking and analysis in mechanical simulators have proven useful for endoscopy training. Common motion tracking methods based on electromagnetic tracker are however limited by their high cost and material…

Computer Vision and Pattern Recognition · Computer Science 2025-03-11 Yuelin Zhang , Kim Yan , Chun Ping Lam , Chengyu Fang , Wenxuan Xie , Yufu Qiu , Raymond Shing-Yan Tang , Shing Shin Cheng