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Object cross-identification in multiple observations is often complicated by the uncertainties in their astrometric calibration. Due to the lack of standard reference objects, an image with a small field of view can have significantly…

天体物理仪器与方法 · 物理学 2015-06-05 Tamas Budavari , Stephen H. Lubow

Finding matching keypoints between images is a core problem in 3D computer vision. However, modern matchers struggle with large in-plane rotations. A straightforward mitigation is to learn rotation invariance via data augmentation. However,…

计算机视觉与模式识别 · 计算机科学 2026-04-14 David Nordström , Johan Edstedt , Fredrik Kahl , Georg Bökman

Consider the Euclidean space $\mathbb{R}^3$ endowed with a canonical semi-symmetric non-metric connection determined by a vector field $\mathsf{C}\in\mathfrak{X}(\mathbb{R}^3)$. We study surfaces when the sectional curvature with respect to…

微分几何 · 数学 2024-05-22 Muhittin Evren Aydin , Rafael López , Adela Mihai

Longslit spectroscopy is entering an era of increased spatial and spectral resolution and increased sample size. Improved instruments reveal complex velocity structure that cannot be described with a one-dimensional rotation curve, yet…

天体物理学 · 物理学 2009-10-31 Elizabeth J. Barton , Sheila J. Kannappan , Michael J. Kurtz , Margaret J. Geller

Rectifying the orientation of images represents a daily task for every photographer. This task may be complicated even for the human eye, especially when the horizon or other horizontal and vertical lines in the image are missing. In this…

计算机视觉与模式识别 · 计算机科学 2021-05-13 Ionut Mironica , Andrei Zugravu

Object detection and recognition are important problems in computer vision. Since these problems are meta-heuristic, despite a lot of research, practically usable, intelligent, real-time, and dynamic object detection/recognition methods are…

计算机视觉与模式识别 · 计算机科学 2013-02-22 Dilip K. Prasad

Object detection is a fundamental task in computer vision and has many applications in image processing. This paper proposes a new approach for object detection by applying scale invariant feature transform (SIFT) in an automatic…

计算机视觉与模式识别 · 计算机科学 2012-10-29 Reza Oji , Farshad Tajeripour

Recent advances have shown that symmetry, a structural prior that most objects exhibit, can support a variety of single-view 3D understanding tasks. However, detecting 3D symmetry from an image remains a challenging task. Previous works…

计算机视觉与模式识别 · 计算机科学 2021-05-10 Yichao Zhou , Shichen Liu , Yi Ma

Estimating a 3D human pose has proven to be a challenging task, primarily because of the complexity of the human body joints, occlusions, and variability in lighting conditions. In this paper, we introduce a higher-order graph convolutional…

计算机视觉与模式识别 · 计算机科学 2021-11-02 Jianning Quan , A. Ben Hamza

Partially twisted boundary conditions are widely used for improving the momentum resolution in lattice computations of hadronic correlation functions. The method is however expensive since every additional twist requires computing…

高能物理 - 格点 · 物理学 2021-12-17 Nils Asmussen , Alessandro Barone , Andreas Jüttner

Modern perception systems in the field of autonomous driving rely on 3D data analysis. LiDAR sensors are frequently used to acquire such data due to their increased resilience to different lighting conditions. Although rotating LiDAR…

计算机视觉与模式识别 · 计算机科学 2020-12-08 Meytal Rapoport-Lavie , Dan Raviv

We present a robust real-time LiDAR 3D object detector that leverages heteroscedastic aleatoric uncertainties to significantly improve its detection performance. A multi-loss function is designed to incorporate uncertainty estimations…

机器人学 · 计算机科学 2019-05-07 Di Feng , Lars Rosenbaum , Fabian Timm , Klaus Dietmayer

Many classes of images exhibit rotational symmetry. Convolutional neural networks are sometimes trained using data augmentation to exploit this, but they are still required to learn the rotation equivariance properties from the data.…

机器学习 · 计算机科学 2016-05-27 Sander Dieleman , Jeffrey De Fauw , Koray Kavukcuoglu

This study introduces geometric algebra to decompose credit system relationships into their projective (correlation-like) and rotational (feedback-spiral) components. We represent economic states as multi-vectors in Clifford algebra, where…

综合金融 · 定量金融 2025-10-21 Agus Sudjianto , Sandi Setiawan

Ball bearing joints are a critical component in all rotating machinery, and detecting and locating faults in these joints is a significant problem in industry and research. Intelligent fault detection (IFD) is the process of applying…

信号处理 · 电气工程与系统科学 2022-09-23 Joshua Pickard , Sarah Moll

We present a novel learned keypoint detection method designed to maximize the number of correct matches for the task of non-rigid image correspondence. Our training framework uses true correspondences, obtained by matching annotated image…

计算机视觉与模式识别 · 计算机科学 2022-12-20 Welerson Melo , Guilherme Potje , Felipe Cadar , Renato Martins , Erickson R. Nascimento

Detecting changes in high-dimensional vectors presents significant challenges, especially when the post-change distribution is unknown and time-varying. This paper introduces a novel robust algorithm for correlation change detection in…

统计方法学 · 统计学 2024-10-07 Assma Alghamdi , Taposh Banerjee , Jayant Rajgopal

We investigate the problem of automatically placing an object into a background image for image compositing. Given a background image and a segmented object, the goal is to train a model to predict plausible placements (location and scale)…

计算机视觉与模式识别 · 计算机科学 2023-04-10 Sijie Zhu , Zhe Lin , Scott Cohen , Jason Kuen , Zhifei Zhang , Chen Chen

Aiming to improve the checkerboard corner detection robustness against the images with poor quality, such as lens distortion, extreme poses, and noise, we propose a novel detection algorithm which can maintain high accuracy on inputs under…

计算机视觉与模式识别 · 计算机科学 2023-02-13 Ben Chen , Caihua Xiong , Qi Zhang

Corner detection is widely used in various computer vision tasks, such as image matching and 3D reconstruction. Our research indicates that there are theoretical flaws in Zhang et al.'s use of a simple corner model to obtain a series of…

计算机视觉与模式识别 · 计算机科学 2026-01-14 Dongbo Xie , Junjie Qiu , Changming Sun , Weichuan Zhang