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Medical image registration is critical for aligning anatomical structures across imaging modalities such as computed tomography (CT), magnetic resonance imaging (MRI), and ultrasound. Among existing techniques, non-rigid registration (NRR)…

Image and Video Processing · Electrical Eng. & Systems 2025-12-17 Sneha Sree C. , Dattesh Shanbhag , Sudhanya Chatterjee

We consider the problem of image representation for the tasks of unsupervised learning and semi-supervised learning. In those learning tasks, the raw image vectors may not provide enough representation for their intrinsic structures due to…

Machine Learning · Computer Science 2014-02-20 Yiyi Liao , Yue Wang , Yong Liu

This paper presents NimbleReg, a light-weight deep-learning (DL) framework for diffeomorphic image registration leveraging surface representation of multiple segmented anatomical regions. Deep learning has revolutionized image registration…

Computer Vision and Pattern Recognition · Computer Science 2026-04-29 Antoine Legouhy , Ross Callaghan , Nolah Mazet , Vivien Julienne , Hojjat Azadbakht , Hui Zhang

Neural 3D implicit representations learn priors that are useful for diverse applications, such as single- or multiple-view 3D reconstruction. A major downside of existing approaches while rendering an image is that they require evaluating…

Computer Vision and Pattern Recognition · Computer Science 2023-12-20 Tarun Yenamandra , Ayush Tewari , Nan Yang , Florian Bernard , Christian Theobalt , Daniel Cremers

In a scenario where multi-modal cameras are operating together, the problem of working with non-aligned images cannot be avoided. Yet, existing image fusion algorithms rely heavily on strictly registered input image pairs to produce more…

Computer Vision and Pattern Recognition · Computer Science 2024-01-02 Zeyang Zhang , Hui Li , Tianyang Xu , Xiaojun Wu , Josef Kittler

Applications from manipulation to autonomous vehicles rely on robust and general object tracking to safely perform tasks in dynamic environments. We propose the first certifiably optimal category-level approach for simultaneous shape…

Robotics · Computer Science 2024-12-09 Lorenzo Shaikewitz , Samuel Ubellacker , Luca Carlone

This paper presents a novel predictive model, MetaMorph, for metamorphic registration of images with appearance changes (i.e., caused by brain tumors). In contrast to previous learning-based registration methods that have little or no…

Computer Vision and Pattern Recognition · Computer Science 2023-03-10 Jian Wang , Jiarui Xing , Jason Druzgal , William M. Wells , Miaomiao Zhang

Neuromorphic imaging is an emerging technique that imitates the human retina to sense variations in dynamic scenes. It responds to pixel-level brightness changes by asynchronous streaming events and boasts microsecond temporal precision…

Image and Video Processing · Electrical Eng. & Systems 2024-10-23 Pei Zhang , Shuo Zhu , Chutian Wang , Yaping Zhao , Edmund Y. Lam

We introduce an approach for the real-time (2Hz) creation of a dense map and alignment of a moving robotic agent within that map by rendering using a Graphics Processing Unit (GPU). This is done by recasting the scan alignment part of the…

Computer Vision and Pattern Recognition · Computer Science 2017-02-23 Julian Ryde , Xuchu , Ding

In this paper, we propose SRIF, a novel Semantic shape Registration framework based on diffusion-based Image morphing and Flow estimation. More concretely, given a pair of extrinsically aligned shapes, we first render them from multi-views,…

Computer Vision and Pattern Recognition · Computer Science 2024-10-04 Mingze Sun , Chen Guo , Puhua Jiang , Shiwei Mao , Yurun Chen , Ruqi Huang

Recent years have witnessed rapid advancements in 3D scanning technologies, with applications spanning VR/AR, digital human creation, and medical imaging. Structured-light scanning with phase-shifting techniques is preferred for its use of…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Xiang Gao , Xinmu Wang , Zhou Zhao , Junqi Huang , Xianfeng David Gu

We propose a deformable registration algorithm based on unsupervised learning of a low-dimensional probabilistic parameterization of deformations. We model registration in a probabilistic and generative fashion, by applying a conditional…

Computer Vision and Pattern Recognition · Computer Science 2018-07-23 Julian Krebs , Tommaso Mansi , Boris Mailhé , Nicholas Ayache , Hervé Delingette

Point cloud registration is a fundamental task in 3D computer vision. Most existing methods rely solely on geometric information for feature extraction and matching. Recently, several studies have incorporated color information from RGB-D…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Congjia Chen , Yufu Qu

The recent statistical theory of neural networks focuses on nonparametric denoising problems that treat randomness as additive noise. Variability in image classification datasets does, however, not originate from additive noise but from…

Statistics Theory · Mathematics 2025-08-19 Juntong Chen , Sophie Langer , Johannes Schmidt-Hieber

Deep learning-based image registration approaches have shown competitive performance and run-time advantages compared to conventional image registration methods. However, existing learning-based approaches mostly require to train separate…

Image and Video Processing · Electrical Eng. & Systems 2023-03-21 Yinsong Wang , Huaqi Qiu , Chen Qin

For nonlinear multispectral computed tomography (CT), accurate and fast image reconstruction is challenging when the scanning geometries under different X-ray energy spectra are inconsistent or mismatched. Motivated by this, we propose an…

Numerical Analysis · Mathematics 2025-07-28 Yu Gao , Chong Chen

Deformable image registration between Computed Tomography (CT) images and Magnetic Resonance (MR) imaging is essential for many image-guided therapies. In this paper, we propose a novel translation-based unsupervised deformable image…

Image and Video Processing · Electrical Eng. & Systems 2020-09-22 Zhe Xu , Jie Luo , Jiangpeng Yan , Ritvik Pulya , Xiu Li , William Wells , Jayender Jagadeesan

Image feature point matching is a key step in Structure from Motion(SFM). However, it is becoming more and more time consuming because the number of images is getting larger and larger. In this paper, we proposed a GPU accelerated image…

Computer Vision and Pattern Recognition · Computer Science 2018-05-24 Tao Xu , Kun Sun , Wenbing Tao

Differentiable rendering is a technique used in an important emerging class of visual computing applications that involves representing a 3D scene as a model that is trained from 2D images using gradient descent. Recent works (e.g. 3D…

Computer Vision and Pattern Recognition · Computer Science 2024-01-12 Sankeerth Durvasula , Adrian Zhao , Fan Chen , Ruofan Liang , Pawan Kumar Sanjaya , Nandita Vijaykumar

Deformable image registration, i.e., the task of aligning multiple images into one coordinate system by non-linear transformation, serves as an essential preprocessing step for neuroimaging data. Recent research on deformable image…

Computer Vision and Pattern Recognition · Computer Science 2022-12-08 Yao Su , Xin Dai , Lifang He , Xiangnan Kong