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Both in terrestrial and extraterrestrial environments, the precise and informative model of the ground and the surface ahead is crucial for navigation and obstacle avoidance. The ground surface is not always flat and it may be sloped, bumpy…

机器学习 · 计算机科学 2022-10-20 Pouria Mehrabi , Hamid D. Taghirad

We show that we can obtain a reducible spherical curve from any non-trivial spherical curve by four or less inverse-half-twisted splices, i.e., the reductivity, which represents how reduced a spherical curve is, is four or less. We also…

几何拓扑 · 数学 2014-01-17 Ayaka Shimizu

This paper explores the potential of brain-computer interfaces in segmenting objects from images. Our approach is centered around designing an effective method for displaying the image parts to the users such that they generate measurable…

计算机视觉与模式识别 · 计算机科学 2014-08-20 Eva Mohedano , Graham Healy , Kevin McGuinness , Xavier Giro-i-Nieto , Noel E. O'Connor , Alan F. Smeaton

Motion segmentation in dynamic scenes is highly challenging, as conventional methods heavily rely on estimating camera poses and point correspondences from inherently noisy motion cues. Existing statistical inference or iterative…

计算机视觉与模式识别 · 计算机科学 2026-02-26 Xiankang He , Peile Lin , Ying Cui , Dongyan Guo , Chunhua Shen , Xiaoqin Zhang

This paper presents a simple and efficient method to convolve an image with a Gaussian kernel. The computation is performed in a constant number of operations per pixel using running sums along the image rows and columns. We investigate the…

计算机视觉与模式识别 · 计算机科学 2011-07-26 Elhanan Elboher , Michael Werman

We investigate the shapes of \gamma-ray pulsar light curves using 3D pulsar magnetosphere models of finite conductivity. These models, covering the entire spectrum of solutions between vacuum and force-free magnetospheres, for the first…

高能天体物理现象 · 物理学 2015-06-05 Constantinos Kalapotharakos , Alice K. Harding , Demosthenes Kazanas , Ioannis Contopoulos

The paper aims at presenting a didactic and self-contained overview of Gauss-Hermite and Gauss-Laguerre laser beam modes. The usual textbook approach for deriving these modes is to solve the Helmoltz electromagnetic wave equation within the…

光学 · 物理学 2007-05-23 Francesco Pampaloni , Joerg Enderlein

In this paper we address the problem of representing 3D visual data with parameterized volumetric shape primitives. Specifically, we present a (two-stage) approach built around convolutional neural networks (CNNs) capable of segmenting…

计算机视觉与模式识别 · 计算机科学 2020-01-29 Jaka Šircelj , Tim Oblak , Klemen Grm , Uroš Petković , Aleš Jaklič , Peter Peer , Vitomir Štruc , Franc Solina

Image segmentation is a fundamental task in computer vision aimed at delineating object boundaries within images. Traditional approaches, such as edge detection and variational methods, have been widely explored, while recent advances in…

计算机视觉与模式识别 · 计算机科学 2025-06-12 Junchao Zhou

We propose a new approach, named PolyMapper, to circumvent the conventional pixel-wise segmentation of (aerial) images and predict objects in a vector representation directly. PolyMapper directly extracts the topological map of a city from…

计算机视觉与模式识别 · 计算机科学 2019-12-02 Zuoyue Li , Jan Dirk Wegner , Aurélien Lucchi

Extracting parametric edge curves from point clouds is a fundamental problem in 3D vision and geometry processing. Existing approaches mainly rely on keypoint detection, a challenging procedure that tends to generate noisy output, making…

计算机视觉与模式识别 · 计算机科学 2023-03-30 Xiangyu Zhu , Dong Du , Weikai Chen , Zhiyou Zhao , Yinyu Nie , Xiaoguang Han

Robots operating in unstructured environments often require accurate and consistent object-level representations. This typically requires segmenting individual objects from the robot's surroundings. While recent large models such as Segment…

机器人学 · 计算机科学 2025-04-07 Haozhan Tang , Tianyi Zhang , Oliver Kroemer , Matthew Johnson-Roberson , Weiming Zhi

This work advocates Eulerian motion representation learning over the current standard Lagrangian optical flow model. Eulerian motion is well captured by using phase, as obtained by decomposing the image through a complex-steerable pyramid.…

计算机视觉与模式识别 · 计算机科学 2016-09-09 S. L. Pintea , J. C. van Gemert

In this article we give an implementation of the standard algorithm to segment a real algebraic plane curve defined implicitly. Our implementation is efficient and simpler than previous. We use global information to count the number of…

代数几何 · 数学 2016-05-24 Cesar Massri , Manuel Dubinsky

Reconstructing dynamic objects from monocular videos is a severely underconstrained and challenging problem, and recent work has approached it in various directions. However, owing to the ill-posed nature of this problem, there has been no…

计算机视觉与模式识别 · 计算机科学 2024-04-02 Devikalyan Das , Christopher Wewer , Raza Yunus , Eddy Ilg , Jan Eric Lenssen

Few-shot Medical Image Segmentation (FSMIS) is a more promising solution for medical image segmentation tasks where high-quality annotations are naturally scarce. However, current mainstream methods primarily focus on extracting holistic…

计算机视觉与模式识别 · 计算机科学 2023-09-21 Yazhou Zhu , Shidong Wang , Tong Xin , Zheng Zhang , Haofeng Zhang

Lagrangian curves in 4-space entertain intriguing relationships with second order deformation of plane curves under the special affine group and null curves in a 3-dimensional Lorentzian space form. We provide a natural affine symplectic…

辛几何 · 数学 2013-12-24 Emilio Musso , Evelyne Hubert

Image Segmentation is one of the core tasks in Computer Vision and solving it often depends on modeling the image appearance data via the color distributions of each it its constituent regions. Whereas many segmentation algorithms handle…

计算机视觉与模式识别 · 计算机科学 2025-02-06 Jeova Farias Sales Rocha Neto

We propose a supervised learning approach for predicting an underlying graph from a set of graph signals. Our approach is based on linear regression. In the linear regression model, we predict edge-weights of a graph as the output, given a…

信息论 · 计算机科学 2018-11-06 Arun Venkitaraman , Hermina Petric Maretic , Saikat Chatterjee , Pascal Frossard

We propose a graph spectrum-based Gaussian process for prediction of signals defined on nodes of the graph. The model is designed to capture various graph signal structures through a highly adaptive kernel that incorporates a flexible…

机器学习 · 计算机科学 2020-10-29 Yin-Cong Zhi , Yin Cheng Ng , Xiaowen Dong