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It remains challenging to automatically segment kidneys in clinical ultrasound images due to the kidneys' varied shapes and image intensity distributions, although semi-automatic methods have achieved promising performance. In this study,…

Computer Vision and Pattern Recognition · Computer Science 2019-01-09 Shi Yin , Zhengqiang Zhang , Hongming Li , Qinmu Peng , Xinge You , Susan L. Furth , Gregory E. Tasian , Yong Fan

Accurate segmentation of anatomical structures in ultrasound (US) images, particularly small ones, is challenging due to noise and variability in imaging conditions (e.g., probe position, patient anatomy, tissue characteristics and…

Image and Video Processing · Electrical Eng. & Systems 2025-03-11 Danielle L. Ferreira , Ahana Gangopadhyay , Hsi-Ming Chang , Ravi Soni , Gopal Avinash

Transparent object grasping remains a persistent challenge in robotics, largely due to the difficulty of acquiring precise 3D information. Conventional optical 3D sensors struggle to capture transparent objects, and machine learning methods…

Robotics · Computer Science 2025-04-15 Yi Han , Zixin Lin , Dongjie Li , Lvping Chen , Yongliang Shi , Gan Ma

Accurate and real-time surgical instrument segmentation is important in the endoscopic vision of robot-assisted surgery, and significant challenges are posed by frequent instrument-tissue contacts and continuous change of observation…

Computer Vision and Pattern Recognition · Computer Science 2020-08-12 Fangbo Qin , Shan Lin , Yangming Li , Randall A. Bly , Kris S. Moe , Blake Hannaford

Despite the recent advances of deep learning algorithms in medical imaging, the automatic segmentation algorithms for kidneys in MRI exams are still scarce. Automated segmentation of kidneys in Magnetic Resonance Imaging (MRI) exams are…

Image and Video Processing · Electrical Eng. & Systems 2021-08-31 Manu Goyal , Junyu Guo , Lauren Hinojosa , Keith Hulsey , Ivan Pedrosa

Spine injections are commonly performed in several clinical procedures. The localization of the target vertebral level (i.e. the position of a vertebra in a spine) is typically done by back palpation or under X-ray guidance, yielding either…

Image and Video Processing · Electrical Eng. & Systems 2020-02-27 Maria Tirindelli , Maria Victorova , Javier Esteban , Seong Tae Kim , David Navarro-Alarcon , Yong Ping Zheng , Nassir Navab

Deep learning approaches have achieved state-of-the-art performance in cardiac magnetic resonance (CMR) image segmentation. However, most approaches have focused on learning image intensity features for segmentation, whereas the…

Computer Vision and Pattern Recognition · Computer Science 2019-07-16 Jinming Duan , Ghalib Bello , Jo Schlemper , Wenjia Bai , Timothy J W Dawes , Carlo Biffi , Antonio de Marvao , Georgia Doumou , Declan P O'Regan , Daniel Rueckert

Knee arthroscopy is a minimally invasive surgical (MIS) procedure which is performed to treat knee-joint ailment. Lack of visual information of the surgical site obtained from miniaturized cameras make this surgical procedure more complex.…

Image and Video Processing · Electrical Eng. & Systems 2024-09-04 Shahnewaz Ali , Yaqub Jonmohamadi , Yu Takeda , Jonathan Roberts , Ross Crawford , Cameron Brown , Ajay K. Pandey

Renal biopsies are the gold standard for the diagnosis of kidney diseases. Lesion scores made by renal pathologists are semi-quantitative and exhibit high inter-observer variability. Automating lesion classification within segmented…

Computer Vision and Pattern Recognition · Computer Science 2024-12-19 Zhan Xiong , Junling He , Pieter Valkema , Tri Q. Nguyen , Maarten Naesens , Jesper Kers , Fons J. Verbeek

Accurate segmentation of surgical instrument tip is an important task for enabling downstream applications in robotic surgery, such as surgical skill assessment, tool-tissue interaction and deformation modeling, as well as surgical…

Computer Vision and Pattern Recognition · Computer Science 2023-09-06 Jiaqi Liu , Yonghao Long , Kai Chen , Cheuk Hei Leung , Zerui Wang , Qi Dou

In this paper, we formulated the kidney segmentation task in a coarse-to-fine fashion, predicting a coarse label based on the entire CT image and a fine label based on the coarse segmentation and separated image patches. A key difference…

Image and Video Processing · Electrical Eng. & Systems 2019-08-30 Yue Zhang , Jiong Wu , Yu Zhou , Yifan Chen , Xiaoying Tang

Image processing techniques provide important assistance to physicians and relieve their workload in different tasks. In particular, identifying objects of interest such as lesions and anatomical structures from the image is a challenging…

Medical Physics · Physics 2020-05-20 Meysam Tavakoli , Mahdieh Nazar

Surgical tool segmentation in endoscopic images is the first step towards pose estimation and (sub-)task automation in challenging minimally invasive surgical operations. While many approaches in the literature have shown great results…

Robotics · Computer Science 2019-02-14 Cristian da Costa Rocha , Nicolas Padoy , Benoit Rosa

This paper presents a new approach for precisely estimating the renal vascular dominant region using a Voronoi diagram. To provide computer-assisted diagnostics for the pre-surgical simulation of partial nephrectomy surgery, we must obtain…

Image and Video Processing · Electrical Eng. & Systems 2020-01-27 Chenglong Wang , Holger R. Roth , Takayuki Kitasaka , Masahiro Oda , Yuichiro Hayashi , Yasushi Yoshino , Tokunori Yamamoto , Naoto Sassa , Momokazu Goto , Kensaku Mori

The basic problem of shape complementarity analysis appears fundamental to applications as diverse as mechanical design, assembly automation, robot motion planning, micro- and nano-fabrication, protein-ligand binding, and rational drug…

Computational Geometry · Computer Science 2017-12-05 Morad Behandish , Horea T. Ilies

The diagnostic value of biopsies is highly dependent on the placement of needles. Robotic trajectory guidance has been shown to improve needle positioning, but feedback for real-time navigation is limited. Haptic display of needle tip…

Due to a high heterogeneity in pose and size and to a limited number of available data, segmentation of pediatric images is challenging for deep learning methods. In this work, we propose a new CNN architecture that is pose and scale…

Computer Vision and Pattern Recognition · Computer Science 2021-07-07 Giammarco La Barbera , Pietro Gori , Haithem Boussaid , Bruno Belucci , Alessandro Delmonte , Jeanne Goulin , Sabine Sarnacki , Laurence Rouet , Isabelle Bloch

The health and safety hazards posed by worn crane lifting ropes mandate periodic inspection for damage. This task is time-consuming, prone to human error, halts operation, and may result in the premature disposal of ropes. Therefore, we…

Computer Vision and Pattern Recognition · Computer Science 2025-02-18 Tuomas Jalonen , Mohammad Al-Sa'd , Roope Mellanen , Serkan Kiranyaz , Moncef Gabbouj

Accurate fine-grained segmentation of the renal vasculature is critical for nephrological analysis, yet it faces challenges due to diverse and insufficiently annotated images. Existing methods struggle to accurately segment intricate…

Computer Vision and Pattern Recognition · Computer Science 2025-02-11 Yitian Long , Zhongze Wu , Xiu Su , Lining Yu , Ruining Deng , Haichun Yang , Yuankai Huo

Drilling is one of the hardest parts of pedicle screw fixation, and it is one of the most dangerous operations because inaccurate screw placement would injury vital tissues, particularly when the vertebra is not stationary. Here we…

Robotics · Computer Science 2021-01-07 Zhongliang Jiang , Long Lei , Yu Sun , Xiaozhi Qi , Ying Hu , Bing Li , Nassir Navab , Jianwei Zhang