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Estimating precise metric depth and scene reconstruction from monocular endoscopy is a fundamental task for surgical navigation in robotic surgery. However, traditional stereo matching adopts binocular images to perceive the depth…

Robotics · Computer Science 2022-11-29 Ruofeng Wei , Bin Li , Hangjie Mo , Fangxun Zhong , Yonghao Long , Qi Dou , Yun-Hui Liu , Dong Sun

Efficiently detecting target weld seams while ensuring sub-millimeter accuracy has always been an important challenge in autonomous welding, which has significant application in industrial practice. Previous works mostly focused on…

Computer Vision and Pattern Recognition · Computer Science 2024-08-21 Pengkun Wei , Shuo Cheng , Dayou Li , Ran Song , Yipeng Zhang , Wei Zhang

We study the problem of reconstructing an image from information stored at contour locations. We show that high-quality reconstructions with high fidelity to the source image can be obtained from sparse input, e.g., comprising less than…

Computer Vision and Pattern Recognition · Computer Science 2018-04-11 Tali Dekel , Chuang Gan , Dilip Krishnan , Ce Liu , William T. Freeman

Recovering textured 3D models of non-rigid human body shapes is challenging due to self-occlusions caused by complex body poses and shapes, clothing obstructions, lack of surface texture, background clutter, sparse set of cameras with…

Computer Vision and Pattern Recognition · Computer Science 2018-09-19 Abbhinav Venkat , Sai Sagar Jinka , Avinash Sharma

With the rapid advancement of technologies such as virtual reality, augmented reality, and gesture control, users expect interactions with computer interfaces to be more natural and intuitive. Existing visual algorithms often struggle to…

Computer Vision and Pattern Recognition · Computer Science 2024-05-14 Haonan Li , Patrick P. K. Chen , Yitong Zhou

With the increasing use of surgical robots in clinical practice, enhancing their ability to process multimodal medical images has become a key research challenge. Although traditional medical image fusion methods have made progress in…

Computer Vision and Pattern Recognition · Computer Science 2025-04-30 Qinhua Xie , Hao Tang

Reliable estimation of surgical needle 3D position and orientation is essential for autonomous robotic suturing, yet existing methods operate almost exclusively under stereoscopic vision. In monocular endoscopic settings, common in…

Skeleton creation is an important phase in the character animation pipeline. However, handcrafting skeleton takes extensive labor time and domain knowledge. Automatic skeletonization provides a solution. However, most of the current…

Graphics · Computer Science 2021-10-13 Jing Ma , Jin Wang , Jituo Li , Dongliang Zhang

We present a self-supervised learning-based pipeline for dense 3D reconstruction from full-length monocular endoscopic videos without a priori modeling of anatomy or shading. Our method only relies on unlabeled monocular endoscopic videos…

Computer Vision and Pattern Recognition · Computer Science 2019-09-10 Xingtong Liu , Ayushi Sinha , Masaru Ishii , Gregory D. Hager , Russell H. Taylor , Mathias Unberath

With the rapid development of computer graphics and vision, several three-dimensional (3D) reconstruction techniques have been proposed and used to obtain the 3D representation of objects in the form of point cloud models, mesh models, and…

Computer Vision and Pattern Recognition · Computer Science 2021-12-02 Rui Wang

Tubular tree structures such as blood vessels and lung airways are central to many clinical tasks, including diagnosis, treatment planning, and surgical navigation. Accurate centerline extraction with correct topology is essential, as…

Computer Vision and Pattern Recognition · Computer Science 2026-03-13 Roman Naeem , David Hagerman , Jennifer Alvén , Fredrik Kahl

Reconstructing deformable tissues from endoscopic stereo videos in robotic surgery is crucial for various clinical applications. However, existing methods relying only on implicit representations are computationally expensive and require…

Computer Vision and Pattern Recognition · Computer Science 2023-06-01 Chen Yang , Kailing Wang , Yuehao Wang , Xiaokang Yang , Wei Shen

Minimally invasive surgery presents challenges such as dynamic tissue motion and a limited field of view. Accurate tissue tracking has the potential to support surgical guidance, improve safety by helping avoid damage to sensitive…

Computer Vision and Pattern Recognition · Computer Science 2025-08-12 Konrad Reuter , Suresh Guttikonda , Sarah Latus , Lennart Maack , Christian Betz , Tobias Maurer , Alexander Schlaefer

Single-pixel imaging (SPI) is significant for applications constrained by transmission bandwidth or lighting band, where 3D SPI can be further realized through capturing signals carrying depth. Sampling strategy and reconstruction algorithm…

Image and Video Processing · Electrical Eng. & Systems 2025-04-01 Xinyue Ma , Chenxing Wang

This work describes a novel methodology for automatic contour extraction from 2D images of 3D neurons (e.g. camera lucida images and other types of 2D microscopy). Most contour-based shape analysis methods can not be used to characterize…

Computer Vision and Pattern Recognition · Computer Science 2008-10-24 J. J. G. Leandro , R. M. Cesar , L. da F. Costa

Robotic ultrasound (US) imaging has been seen as a promising solution to overcome the limitations of free-hand US examinations, i.e., inter-operator variability. However, the fact that robotic US systems cannot react to subject movements…

Robotics · Computer Science 2022-09-07 Zhongliang Jiang , Nehil Danis , Yuan Bi , Mingchuan Zhou , Markus Kroenke , Thomas Wendler , Nassir Navab

Semantic tool segmentation in surgical videos is important for surgical scene understanding and computer-assisted interventions as well as for the development of robotic automation. The problem is challenging because different illumination…

Computer Vision and Pattern Recognition · Computer Science 2020-07-28 Emanuele Colleoni , Philip Edwards , Danail Stoyanov

In the modern medical care, venipuncture is an indispensable procedure for both diagnosis and treatment. In this paper, unlike existing solutions that fully or partially rely on professional assistance, we propose VeniBot -- a compact…

Image and Video Processing · Electrical Eng. & Systems 2021-05-28 Yu Chen , Yuxuan Wang , Bolin Lai , Zijie Chen , Xu Cao , Nanyang Ye , Zhongyuan Ren , Junbo Zhao , Xiao-Yun Zhou , Peng Qi

We introduce specialized diffusion-based generative models that capture the spatiotemporal dynamics of fine-grained robotic surgical sub-stitch actions through supervised learning on annotated laparoscopic surgery footage. The proposed…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Mehmet Kerem Turkcan , Mattia Ballo , Filippo Filicori , Zoran Kostic

To handle the different types of surface reconstruction tasks, we have replicated as well as modified a few of reconstruction methods and have made comparisons between the traditional method and data-driven method for reconstruction the…

Multimedia · Computer Science 2021-12-28 Ziyu Li , Fangyang Ye , Xinran Guan