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In this paper, we study the problem of reconstructing a 3D point source model from a set of 2D projections at unknown view angles. Our method obviates the need to recover the projection angles by extracting a set of rotation-invariant…

Signal Processing · Electrical Eng. & Systems 2020-03-24 Mona Zehni , Shuai Huang , Ivan Dokmanić , Zhizhen Zhao

Determining the 3D orientations of an object in an image, known as single-image pose estimation, is a crucial task in 3D vision applications. Existing methods typically learn 3D rotations parametrized in the spatial domain using Euler…

Computer Vision and Pattern Recognition · Computer Science 2024-11-05 Jongmin Lee , Minsu Cho

This paper uses clustering algorithms to introduce a shape framework for deformable objects. Until now, the shape detection of the deformable objects has faced several challenges: 1) unable to form a unified framework for multiple shapes;…

Robotics · Computer Science 2023-12-19 Fangqing Chen

The intrinsic rotation invariance lies at the core of matching point clouds with handcrafted descriptors. However, it is widely despised by recent deep matchers that obtain the rotation invariance extrinsically via data augmentation. As the…

Computer Vision and Pattern Recognition · Computer Science 2024-03-28 Hao Yu , Zheng Qin , Ji Hou , Mahdi Saleh , Dongsheng Li , Benjamin Busam , Slobodan Ilic

Monocular 3D object detection plays a pivotal role in the field of autonomous driving and numerous deep learning-based methods have made significant breakthroughs in this area. Despite the advancements in detection accuracy and efficiency,…

Computer Vision and Pattern Recognition · Computer Science 2023-09-06 Xingyuan Li , Jinyuan Liu , Long Ma , Xin Fan , Risheng Liu

Large intra-class variation is the result of changes in multiple object characteristics. Images, however, only show the superposition of different variable factors such as appearance or shape. Therefore, learning to disentangle and…

Computer Vision and Pattern Recognition · Computer Science 2019-06-18 Dominik Lorenz , Leonard Bereska , Timo Milbich , Björn Ommer

Many innovative applications require establishing correspondences among 3D geometric objects. However, the countless possible deformations of smooth surfaces make shape matching a challenging task. Finding an embedding to represent the…

Computer Vision and Pattern Recognition · Computer Science 2022-06-09 Riccardo Marin , Souhaib Attaiki , Simone Melzi , Emanuele Rodolà , Maks Ovsjanikov

6D object pose estimation is an important task that determines the 3D position and 3D rotation of an object in camera-centred coordinates. By utilizing such a task, one can propose promising solutions for various problems related to scene…

Computer Vision and Pattern Recognition · Computer Science 2019-03-20 Caner Sahin , Guillermo Garcia-Hernando , Juil Sock , Tae-Kyun Kim

Rotation equivariance has recently become a strongly desired property in the 3D deep learning community. Yet most existing methods focus on equivariance regarding a global input rotation while ignoring the fact that rotation symmetry has…

Computer Vision and Pattern Recognition · Computer Science 2022-07-12 Hong-Xing Yu , Jiajun Wu , Li Yi

This paper addresses object perception applied to mobile robotics. Being able to perceive semantically meaningful objects in unstructured environments is a key capability in order to make robots suitable to perform high-level tasks in home…

Robotics · Computer Science 2015-03-18 Arnau Ramisa , David Aldavert , Shrihari Vasudevan , Ricardo Toledo , Ramon Lopez de Mantaras

Recent interest in point cloud analysis has led rapid progress in designing deep learning methods for 3D models. However, state-of-the-art models are not robust to rotations, which remains an unknown prior to real applications and harms the…

Computer Vision and Pattern Recognition · Computer Science 2024-11-18 Dingxin Zhang , Jianhui Yu , Chaoyi Zhang , Weidong Cai

LiDAR based place recognition is popular for loop closure detection and re-localization. In recent years, deep learning brings improvements to place recognition by learnable feature extraction. However, these methods degenerate when the…

Computer Vision and Pattern Recognition · Computer Science 2022-10-21 Sha Lu , Xuecheng Xu , Li Tang , Rong Xiong , Yue Wang

We present a method for 3D object detection and pose estimation from a single image. In contrast to current techniques that only regress the 3D orientation of an object, our method first regresses relatively stable 3D object properties…

Computer Vision and Pattern Recognition · Computer Science 2017-04-12 Arsalan Mousavian , Dragomir Anguelov , John Flynn , Jana Kosecka

Reliable watermarking of panoramic imagery is fundamentally challenged by arbitrary 3D rotations. As panoramas are defined on the sphere, they naturally transform under the action of $SO(3)$, rendering conventional planar representations…

Computer Vision and Pattern Recognition · Computer Science 2026-05-27 Pengzhen Chen , Yanwei Liu , Xiaoyan Gu , Antonios Argyriou , Wu Liu , Weiping Wang

We add one more invariance - the state invariance - to the more commonly used other invariances for learning object representations for recognition and retrieval. By state invariance, we mean robust with respect to changes in the structural…

Computer Vision and Pattern Recognition · Computer Science 2025-02-28 Rohan Sarkar , Avinash Kak

Object functionality is often expressed through part articulation -- as when the two rigid parts of a scissor pivot against each other to perform the cutting function. Such articulations are often similar across objects within the same…

Computer Vision and Pattern Recognition · Computer Science 2018-09-21 Li Yi , Haibin Huang , Difan Liu , Evangelos Kalogerakis , Hao Su , Leonidas Guibas

We present a method for localizing a single camera with respect to a point cloud map in indoor and outdoor scenes. The problem is challenging because correspondences of local invariant features are inconsistent across the domains between…

Computer Vision and Pattern Recognition · Computer Science 2021-06-08 Peng Yin , Lingyun Xu , Ji Zhang , Howie Choset , Sebastian Scherer

3D object recognition is a challenging task for intelligent and robot systems in industrial and home indoor environments. It is critical for such systems to recognize and segment the 3D object instances that they encounter on a frequent…

Computer Vision and Pattern Recognition · Computer Science 2024-06-24 Siddiqui Muhammad Yasir , Amin Muhammad Sadiq , Hyunsik Ahn

We propose a viewpoint invariant model for 3D human pose estimation from a single depth image. To achieve this, our discriminative model embeds local regions into a learned viewpoint invariant feature space. Formulated as a multi-task…

Computer Vision and Pattern Recognition · Computer Science 2016-07-27 Albert Haque , Boya Peng , Zelun Luo , Alexandre Alahi , Serena Yeung , Li Fei-Fei

Despite the recent active research on processing point clouds with deep networks, few attention has been on the sensitivity of the networks to rotations. In this paper, we propose a deep learning architecture that achieves discrete…

Computer Vision and Pattern Recognition · Computer Science 2019-04-02 Jiaxin Li , Yingcai Bi , Gim Hee Lee
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