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The free-form deformation model can represent a wide range of non-rigid deformations by manipulating a control point lattice over the image. However, due to a large number of parameters, it is challenging to fit the free-form deformation…

计算机视觉与模式识别 · 计算机科学 2022-06-10 Takumi Nakane , Haoran Xie , Chao Zhang

Automatic polyp segmentation is crucial for effective diagnosis and treatment in colonoscopy images. Traditional methods encounter significant challenges in accurately delineating polyps due to limitations in feature representation and the…

计算机视觉与模式识别 · 计算机科学 2024-10-03 Quang Vinh Nguyen , Thanh Hoang Son Vo , Sae-Ryung Kang , Soo-Hyung Kim

Colorectal cancer is one of the most common cancers in the world. While colonoscopy is an effective screening technique, navigating an endoscope through the colon to detect polyps is challenging. A 3D map of the observed surfaces could…

Goal: A limitation in robotic surgery is the lack of force feedback, due to challenges in suitable sensing techniques. To enhance the perception of the surgeons and precise force rendering, estimation of these forces along with tissue…

系统与控制 · 电气工程与系统科学 2025-04-30 Srikar Annamraju , Yuxi Chen , Jooyoung Lim , Inki Kim

Automatic analysis of colonoscopy images has been an active field of research motivated by the importance of early detection of precancerous polyps. However, detecting polyps during the live examination can be challenging due to various…

Ulcerative colitis (UC) classification, which is an important task for endoscopic diagnosis, involves two main difficulties. First, endoscopic images with the annotation about UC (positive or negative) are usually limited. Second, they show…

图像与视频处理 · 电气工程与系统科学 2023-03-03 Shota Harada , Ryoma Bise , Hideaki Hayashi , Kiyohito Tanaka , Seiichi Uchida

Colorectal cancer is the third most common cause of cancer death worldwide. Optical colonoscopy is the gold standard for detecting colorectal cancer; however, about 25 percent of polyps are missed during the procedure. A vision-based…

图像与视频处理 · 电气工程与系统科学 2023-01-20 Alwyn Mathew , Ludovic Magerand , Emanuele Trucco , Luigi Manfredi

In this paper, we propose a global method for estimating the motion of a camera which films a static scene. Our approach is direct, fast and robust, and deals with adjacent frames of a sequence. It is based on a quadratic approximation of…

计算机视觉与模式识别 · 计算机科学 2008-09-29 Claire Jonchery , Françoise Dibos , Georges Koepfler

Medical endoscopy remains a challenging application for simultaneous localization and mapping (SLAM) due to the sparsity of image features and size constraints that prevent direct depth-sensing. We present a SLAM approach that incorporates…

图像与视频处理 · 电气工程与系统科学 2019-07-02 Richard J. Chen , Taylor L. Bobrow , Thomas Athey , Faisal Mahmood , Nicholas J. Durr

Following recent advancements in computer-aided detection and diagnosis systems for colonoscopy, the automated reporting of colonoscopy procedures is set to further revolutionize clinical practice. A crucial yet underexplored aspect in the…

计算机视觉与模式识别 · 计算机科学 2025-04-28 Carlo Biffi , Giorgio Roffo , Pietro Salvagnini , Andrea Cherubini

Endoscopy is a valuable tool for the early diagnosis of colon cancer. However, it requires the expertise of endoscopists and is a time-consuming process. In this work, we propose a new multi-label classification method, which considers two…

图像与视频处理 · 电气工程与系统科学 2023-03-14 Zahra Sobhaninia , Nasrin Abharian , Nader Karimi , Shahram Shirani , Shadrokh Samavi

Immersive Colonography allows medical professionals to navigate inside the intricate tubular geometries of subject-specific 3D colon images using Virtual Reality displays. Typically, camera travel is performed via Fly-Through or Fly-Over…

人机交互 · 计算机科学 2020-10-16 Soraia F. Paulo , Daniel Medeiros , Pedro Borges , Joaquim Jorge , Daniel Simões Lopes

Detection and diagnosis of colon polyps are key to preventing colorectal cancer. Recent evidence suggests that AI-based computer-aided detection (CADe) and computer-aided diagnosis (CADx) systems can enhance endoscopists' performance and…

图像与视频处理 · 电气工程与系统科学 2024-03-05 Carlo Biffi , Giulio Antonelli , Sebastian Bernhofer , Cesare Hassan , Daizen Hirata , Mineo Iwatate , Andreas Maieron , Pietro Salvagnini , Andrea Cherubini

The last several years have seen significant progress in using depth cameras for tracking articulated objects such as human bodies, hands, and robotic manipulators. Most approaches focus on tracking skeletal parameters of a fixed shape…

计算机视觉与模式识别 · 计算机科学 2017-11-23 Aaron Walsman , Weilin Wan , Tanner Schmidt , Dieter Fox

Localizing oneself during endoscopic procedures can be problematic due to the lack of distinguishable textures and landmarks, as well as difficulties due to the endoscopic device such as a limited field of view and challenging lighting…

计算机视觉与模式识别 · 计算机科学 2025-02-03 Gary Sarwin , Alessandro Carretta , Victor Staartjes , Matteo Zoli , Diego Mazzatenta , Luca Regli , Carlo Serra , Ender Konukoglu

Myocardial motion and deformation are rich descriptors that characterize cardiac function. Image registration, as the most commonly used technique for myocardial motion tracking, is an ill-posed inverse problem which often requires prior…

图像与视频处理 · 电气工程与系统科学 2022-06-09 Chen Qin , Shuo Wang , Chen Chen , Wenjia Bai , Daniel Rueckert

As the number of people affected by diseases in the gastrointestinal system is ever-increasing, a higher demand on preventive screening is inevitable. This will significantly increase the workload on gastroenterologists. To help reduce the…

计算机视觉与模式识别 · 计算机科学 2025-07-15 Pål Anders Floor , Ivar Farup , Marius Pedersen

The paper presents the results from a multi-year effort to develop and validate image processing methods for selecting the best physical models based on solar image observations. The approach consists of selecting the physical models based…

图像与视频处理 · 电气工程与系统科学 2022-01-06 V. Jatla , M. S. Pattichis , C. N. Arge

Early detection and assessment of polyps play a crucial role in the prevention and treatment of colorectal cancer (CRC). Polyp segmentation provides an effective solution to assist clinicians in accurately locating and segmenting polyp…

计算机视觉与模式识别 · 计算机科学 2025-01-22 Jiaxin Mei , Tao Zhou , Kaiwen Huang , Yizhe Zhang , Yi Zhou , Ye Wu , Huazhu Fu

Background: Automated analysis of CT scans for abdominal organ measurement is crucial for improving diagnostic efficiency and reducing inter-observer variability. Manual segmentation and measurement of organs such as the kidneys, liver,…