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Egocentric videos present unique challenges for 3D scene understanding due to rapid camera motion, frequent object occlusions, and limited object visibility. This paper introduces a novel approach to instance segmentation and tracking in…

Computer Vision and Pattern Recognition · Computer Science 2024-11-21 Yash Bhalgat , Vadim Tschernezki , Iro Laina , João F. Henriques , Andrea Vedaldi , Andrew Zisserman

A high-fidelity digital simulation environment is crucial for accurately replicating physical operational processes. However, inconsistencies between simulation and physical environments result in low confidence in simulation outcomes,…

Computer Vision and Pattern Recognition · Computer Science 2025-01-07 Songjie Han , Yinhua Liu , Yanzheng Li , Hua Chen , Dongmei Yang

Regularization is essential in deformable image registration (DIR) to ensure that the estimated Deformation Vector Field (DVF) remains smooth, physically plausible, and anatomically consistent. However, fine-tuning regularization parameters…

Computer Vision and Pattern Recognition · Computer Science 2025-07-18 Sidaty El Hadramy , Oumeymah Cherkaoui , Philippe C. Cattin

Recently, progress in acquisition equipment such as LiDAR sensors has enabled sensing increasingly spacious outdoor 3D environments. Making sense of such 3D acquisitions requires fine-grained scene understanding, such as constructing…

Computer Vision and Pattern Recognition · Computer Science 2024-08-30 Cedric Perauer , Laurenz Adrian Heidrich , Haifan Zhang , Matthias Nießner , Anastasiia Kornilova , Alexey Artemov

Image registration is the basis for many applications in the fields of medical image computing and computer assisted interventions. One example is the registration of 2D X-ray images with preoperative three-dimensional computed tomography…

Computer Vision and Pattern Recognition · Computer Science 2020-12-16 Darya Trofimova , Tim Adler , Lisa Kausch , Lynton Ardizzone , Klaus Maier-Hein , Ulrich Köthe , Carsten Rother , Lena Maier-Hein

Estimating the rigid transformation between two LiDAR scans through putative 3D correspondences is a typical point cloud registration paradigm. Current 3D feature matching approaches commonly lead to numerous outlier correspondences, making…

Computer Vision and Pattern Recognition · Computer Science 2024-05-14 Xinyi Li , Hu Cao , Yinlong Liu , Xueli Liu , Feihu Zhang , Alois Knoll

Inverse consistency is a desirable property for image registration. We propose a simple technique to make a neural registration network inverse consistent by construction, as a consequence of its structure, as long as it parameterizes its…

Computer Vision and Pattern Recognition · Computer Science 2023-10-11 Hastings Greer , Lin Tian , Francois-Xavier Vialard , Roland Kwitt , Sylvain Bouix , Raul San Jose Estepar , Richard Rushmore , Marc Niethammer

In bin-picking scenarios, multiple instances of an object of interest are stacked in a pile randomly, and hence, the instances are inherently subjected to the challenges: severe occlusion, clutter, and similar-looking distractors. Most…

Computer Vision and Pattern Recognition · Computer Science 2018-06-12 Juil Sock , Kwang In Kim , Caner Sahin , Tae-Kyun Kim

In this work, we introduce the task of 3D object instance re-localization (RIO): given one or multiple objects in an RGB-D scan, we want to estimate their corresponding 6DoF poses in another 3D scan of the same environment taken at a later…

Computer Vision and Pattern Recognition · Computer Science 2019-08-20 Johanna Wald , Armen Avetisyan , Nassir Navab , Federico Tombari , Matthias Nießner

Multiple Instance Learning (MIL) recently provides an appealing way to alleviate the drifting problem in visual tracking. Following the tracking-by-detection framework, an online MILBoost approach is developed that sequentially chooses weak…

Computer Vision and Pattern Recognition · Computer Science 2020-03-18 Jinwu Liu , Yao Lu , Tianfei Zhou

We present a novel deep learning-based framework: Embedded Feature Similarity Optimization with Specific Parameter Initialization (SOPI) for 2D/3D medical image registration which is a most challenging problem due to the difficulty such as…

Computer Vision and Pattern Recognition · Computer Science 2023-12-20 Minheng Chen , Zhirun Zhang , Shuheng Gu , Youyong Kong

Many applications including object reconstruction, robot guidance, and scene mapping require the registration of multiple views from a scene to generate a complete geometric and appearance model of it. In real situations, transformations…

Computer Vision and Pattern Recognition · Computer Science 2017-08-07 Marcelo Saval-Calvo , Jorge Azorin-Lopez , Andres Fuster-Guillo , Higinio Mora-Mora

Instance embeddings are an efficient and versatile image representation that facilitates applications like recognition, verification, retrieval, and clustering. Many metric learning methods represent the input as a single point in the…

Machine Learning · Computer Science 2019-08-28 Seong Joon Oh , Kevin Murphy , Jiyan Pan , Joseph Roth , Florian Schroff , Andrew Gallagher

In this paper, a shape-constrained iterative algorithm is proposed to register a rigid template point-cloud to a given reference point-cloud. The algorithm embeds a shape-based similarity constraint into the principle of gravitation. The…

Computer Vision and Pattern Recognition · Computer Science 2019-02-05 Swapna Agarwal , Brojeshwar Bhowmick

Despite current advancement in the field of biomedical image processing, propelled by the deep learning revolution, multimodal image registration, due to its several challenges, is still often performed manually by specialists. The recent…

Image and Video Processing · Electrical Eng. & Systems 2022-11-30 Jiahao Lu , Johan Öfverstedt , Joakim Lindblad , Nataša Sladoje

Instance segmentation is essential for numerous computer vision applications, including robotics, human-computer interaction, and autonomous driving. Currently, popular models bring impressive performance in instance segmentation by…

Computer Vision and Pattern Recognition · Computer Science 2025-09-09 Cuong Manh Hoang

Acquiring accurately aligned multi-modal image pairs is fundamental for achieving high-quality multi-modal image fusion. To address the lack of ground truth in current multi-modal image registration and fusion methods, we propose a novel…

Computer Vision and Pattern Recognition · Computer Science 2025-05-13 Timing Li , Bing Cao , Pengfei Zhu , Bin Xiao , Qinghua Hu

Human instance matting aims to estimate an alpha matte for each human instance in an image, which is challenging as it easily fails in complex cases requiring disentangling mingled pixels belonging to multiple instances along hairy and thin…

Computer Vision and Pattern Recognition · Computer Science 2025-04-22 Siyi Jiao , Wenzheng Zeng , Yerong Li , Huayu Zhang , Changxin Gao , Nong Sang , Mike Zheng Shou

Multi-instance learning (MIL) deals with tasks where data is represented by a set of bags and each bag is described by a set of instances. Unlike standard supervised learning, only the bag labels are observed whereas the label for each…

Machine Learning · Computer Science 2021-04-27 Weijia Zhang , Jiuyong Li , Lin Liu

Whole Slide Image (WSI) classification remains a challenge due to their extremely high resolution and the absence of fine-grained labels. Presently, WSI classification is usually regarded as a Multiple Instance Learning (MIL) problem when…

Computer Vision and Pattern Recognition · Computer Science 2023-08-24 Hongyi Wang , Luyang Luo , Fang Wang , Ruofeng Tong , Yen-Wei Chen , Hongjie Hu , Lanfen Lin , Hao Chen
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