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We present a novel approach to learning a point-wise, meaningful embedding for point-clouds in an unsupervised manner, through the use of neural-networks. The domain of point-cloud processing via neural-networks is rapidly evolving, with…

图形学 · 计算机科学 2019-03-12 Matan Shoef , Sharon Fogel , Daniel Cohen-Or

Finding localized correspondences across different images of the same object is crucial to understand its geometry. In recent years, this problem has seen remarkable progress with the advent of deep learning-based local image features and…

计算机视觉与模式识别 · 计算机科学 2024-01-31 Arjun Karpur , Guilherme Perrotta , Ricardo Martin-Brualla , Howard Zhou , André Araujo

Non-isometric shape correspondence remains a fundamental challenge in computer vision. Traditional methods using Laplace-Beltrami operator (LBO) eigenmodes face limitations in characterizing high-frequency extrinsic shape changes like…

计算机视觉与模式识别 · 计算机科学 2024-07-25 Lennart Bastian , Yizheng Xie , Nassir Navab , Zorah Lähner

3D shapes captured by scanning devices are often incomplete due to occlusion. 3D shape completion methods have been explored to tackle this limitation. However, most of these methods are only trained and tested on a subset of categories,…

计算机视觉与模式识别 · 计算机科学 2024-07-16 Lintai Wu , Junhui Hou , Linqi Song , Yong Xu

State-of-the-art fully intrinsic networks for non-rigid shape matching often struggle to disambiguate the symmetries of the shapes leading to unstable correspondence predictions. Meanwhile, recent advances in the functional map framework…

计算机视觉与模式识别 · 计算机科学 2022-04-29 Nicolas Donati , Etienne Corman , Maks Ovsjanikov

Finding correspondences between 3D shapes is a crucial problem in computer vision and graphics, which is for example relevant for tasks like shape interpolation, pose transfer, or texture transfer. An often neglected but essential property…

计算机视觉与模式识别 · 计算机科学 2023-09-12 Viktoria Ehm , Paul Roetzer , Marvin Eisenberger , Maolin Gao , Florian Bernard , Daniel Cremers

We tackle the problem of finding accurate and robust keypoint correspondences between images. We propose a learning-based approach to guide local feature matches via a learned approximate image matching. Our approach can boost the results…

计算机视觉与模式识别 · 计算机科学 2021-05-03 François Darmon , Mathieu Aubry , Pascal Monasse

Feature matching and finding correspondences between endoscopic images is a key step in many clinical applications such as patient follow-up and generation of panoramic image from clinical sequences for fast anomalies localization.…

计算机视觉与模式识别 · 计算机科学 2022-08-25 Manel Farhat , Houda Chaabouni-Chouayakh , Achraf Ben-Hamadou

Non-rigid structure-from-motion (NRSfM), a promising technique for addressing the mapping challenges in monocular visual deformable simultaneous localization and mapping (SLAM), has attracted growing attention. We introduce a novel method,…

计算机视觉与模式识别 · 计算机科学 2025-10-03 Yongbo Chen , Yanhao Zhang , Shaifali Parashar , Liang Zhao , Shoudong Huang

We propose a fully automatic method for fitting a 3D morphable model to single face images in arbitrary pose and lighting. Our approach relies on geometric features (edges and landmarks) and, inspired by the iterated closest point…

计算机视觉与模式识别 · 计算机科学 2018-04-17 Anil Bas , William A. P. Smith , Timo Bolkart , Stefanie Wuhrer

An end-to-end trainable ConvNet architecture, that learns to harness the power of shape representation for matching disparate image pairs, is proposed. Disparate image pairs are deemed those that exhibit strong affine variations in scale,…

计算机视觉与模式识别 · 计算机科学 2018-11-27 Shefali Srivastava , Abhimanyu Chopra , Arun CS Kumar , Suchendra M. Bhandarkar , Deepak Sharma

We introduce a novel learning-based method for encoding and manipulating 3D surface meshes. Our method is specifically designed to create an interpretable embedding space for deformable shape collections. Unlike previous 3D mesh…

计算机视觉与模式识别 · 计算机科学 2023-10-30 Sara Hahner , Souhaib Attaiki , Jochen Garcke , Maks Ovsjanikov

In this paper, we investigate an open research task of cross-modal retrieval between 3D shapes and textual descriptions. Previous approaches mainly rely on point cloud encoders for feature extraction, which may ignore key inherent features…

计算机视觉与模式识别 · 计算机科学 2024-05-08 Hao Wu , Ruochong LI , Hao Wang , Hui Xiong

We propose a self-supervised approach to deep surface deformation. Given a pair of shapes, our algorithm directly predicts a parametric transformation from one shape to the other respecting correspondences. Our insight is to use…

计算机视觉与模式识别 · 计算机科学 2019-07-09 Thibault Groueix , Matthew Fisher , Vladimir G. Kim , Bryan C. Russell , Mathieu Aubry

We introduce a new framework for learning dense correspondence between deformable 3D shapes. Existing learning based approaches model shape correspondence as a labelling problem, where each point of a query shape receives a label…

计算机视觉与模式识别 · 计算机科学 2017-08-01 Or Litany , Tal Remez , Emanuele Rodolà , Alex M. Bronstein , Michael M. Bronstein

Video analysis tasks rely heavily on identifying the pixels from different frames that correspond to the same visual target. To tackle this problem, recent studies have advocated feature learning methods that aim to learn distinctive…

计算机视觉与模式识别 · 计算机科学 2023-08-08 Rui Li , Shenglong Zhou , Dong Liu

In this work we propose to combine the advantages of learningbased and combinatorial formalisms for 3D shape matching. While learningbased methods lead to state-of-the-art matching performance, they do not ensure geometric consistency, so…

计算机视觉与模式识别 · 计算机科学 2024-11-27 Paul Roetzer , Ahmed Abbas , Dongliang Cao , Florian Bernard , Paul Swoboda

We present Neural Correspondence Prior (NCP), a new paradigm for computing correspondences between 3D shapes. Our approach is fully unsupervised and can lead to high-quality correspondences even in challenging cases such as sparse point…

计算机视觉与模式识别 · 计算机科学 2023-03-28 Souhaib Attaiki , Maks Ovsjanikov

We consider the problem of localizing relevant subsets of non-rigid geometric shapes given only a partial 3D query as the input. Such problems arise in several challenging tasks in 3D vision and graphics, including partial shape similarity,…

计算几何 · 计算机科学 2019-06-17 Arianna Rampini , Irene Tallini , Maks Ovsjanikov , Alex M. Bronstein , Emanuele Rodolà

Supervised machine learning involves approximating an unknown functional relationship from a limited dataset of features and corresponding labels. The classical approach to feature-based machine learning typically relies on applying linear…

机器学习 · 统计学 2025-04-25 Margherita Lampani , Sabrina Guastavino , Michele Piana , Federico Benvenuto