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Graphs are used to model interactions in a variety of contexts, and there is a growing need to quickly assess the structure of such graphs. Some of the most useful graph metrics are based on triangles, such as those measuring social…

社会与信息网络 · 计算机科学 2014-10-21 C. Seshadhri , Ali Pinar , Tamara G. Kolda

Offline handwritten mathematical expression recognition is often considered much harder than its online counterpart due to the absence of temporal information. In order to take advantage of the more mature methods for online recognition and…

计算机视觉与模式识别 · 计算机科学 2020-04-14 Chungkwong Chan

Statistical body shape models are widely used in 3D pose estimation due to their low-dimensional parameters representation. However, it is difficult to avoid self-intersection between body parts accurately. Motivated by this fact, we…

计算机视觉与模式识别 · 计算机科学 2019-01-25 Zaiqiang Wu , Wei Jiang , Hao Luo , Lin Cheng

Computation of the vertices of the convex hull of a set $S$ of $n$ points in $\mathbb{R} ^m$ is a fundamental problem in computational geometry, optimization, machine learning and more. We present "All Vertex Triangle Algorithm" (AVTA), a…

计算几何 · 计算机科学 2018-09-26 Pranjal Awasthi , Bahman Kalantari , Yikai Zhang

An innovative method based on the traversal of rays, originating from detected particles, through a three-dimensional grid of voxels is presented. The methodology has as main advantage that the outcome of the method is independent of the…

流体动力学 · 物理学 2020-08-07 Mickael Bourgoin , Sander Huisman

Accurately localizing and identifying vertebrae from CT images is crucial for various clinical applications. However, most existing efforts are performed on 3D with cropping patch operation, suffering from the large computation costs and…

图像与视频处理 · 电气工程与系统科学 2023-07-25 Han Wu , Jiadong Zhang , Yu Fang , Zhentao Liu , Nizhuan Wang , Zhiming Cui , Dinggang Shen

We study faster algorithms for producing the minimum degree ordering used to speed up Gaussian elimination. This ordering is based on viewing the non-zero elements of a symmetric positive definite matrix as edges of an undirected graph, and…

数据结构与算法 · 计算机科学 2017-11-23 Matthew Fahrbach , Gary L. Miller , Richard Peng , Saurabh Sawlani , Junxing Wang , Shen Chen Xu

This paper proposes a method for computing the visible occluding contours of subdivision surfaces. The paper first introduces new theory for contour visibility of smooth surfaces. Necessary and sufficient conditions are introduced for when…

图形学 · 计算机科学 2022-06-09 Chenxi Liu , Pierre Bénard , Aaron Hertzmann , Shayan Hoshyari

Accurate surface geometry representation is crucial in 3D visual computing. Explicit representations, such as polygonal meshes, and implicit representations, like signed distance functions, each have distinct advantages, making efficient…

图形学 · 计算机科学 2025-09-26 Christian Stippel , Felix Mujkanovic , Thomas Leimkühler , Pedro Hermosilla

Pothole detection is one of the most important tasks for road maintenance. Computer vision approaches are generally based on either 2D road image analysis or 3D road surface modeling. However, these two categories are always used…

计算机视觉与模式识别 · 计算机科学 2022-05-24 Rui Fan , Umar Ozgunalp , Brett Hosking , Ming Liu , Ioannis Pitas

Vertebrae localization, segmentation and identification in CT images is key to numerous clinical applications. While deep learning strategies have brought to this field significant improvements over recent years, transitional and…

图像与视频处理 · 电气工程与系统科学 2022-06-27 Di Meng , Edmond Boyer , Sergi Pujades

Texture recognition has recently been dominated by ImageNet-pre-trained deep Convolutional Neural Networks (CNNs), with specialized modifications and feature engineering required to achieve state-of-the-art (SOTA) performance. However,…

计算机视觉与模式识别 · 计算机科学 2025-03-11 Leonardo Scabini , Kallil M. Zielinski , Emir Konuk , Ricardo T. Fares , Lucas C. Ribas , Kevin Smith , Odemir M. Bruno

Centrality is one of the most fundamental metrics in network science. Despite an abundance of methods for measuring centrality of individual vertices, there are by now only a few metrics to measure centrality of individual edges. We modify…

物理与社会 · 物理学 2019-09-25 Timo Bröhl , Klaus Lehnertz

Despite the continued successes of computationally efficient deep neural network architectures for video object detection, performance continually arrives at the great trilemma of speed versus accuracy versus computational resources (pick…

计算机视觉与模式识别 · 计算机科学 2021-06-16 Julian True , Naimul Khan

We present VISTA (Viewpoint-based Image selection with Semantic Task Awareness), an active exploration method for robots to plan informative trajectories that improve 3D map quality in areas most relevant for task completion. Given an…

Triangle listing is an important topic significant in many practical applications. Efficient algorithms exist for the task of triangle listing. Recent algorithms leverage an orientation framework, which can be thought of as mapping an…

数据库 · 计算机科学 2020-06-26 Michael Yu , Lu Qin , Ying Zhang , Wenjie Zhang , Xuemin Lin

Mesh is an important and powerful type of data for 3D shapes and widely studied in the field of computer vision and computer graphics. Regarding the task of 3D shape representation, there have been extensive research efforts concentrating…

计算机视觉与模式识别 · 计算机科学 2018-11-29 Yutong Feng , Yifan Feng , Haoxuan You , Xibin Zhao , Yue Gao

In the family of clustering problems, we are given a set of objects (vertices of the graph), together with some observed pairwise similarities (edges). The goal is to identify clusters of similar objects by slightly modifying the graph to…

数据结构与算法 · 计算机科学 2013-06-18 Anudhyan Boral , Marek Cygan , Tomasz Kociumaka , Marcin Pilipczuk

In spite of considerable progress, computing curvature in Volume of Fluid (VOF) methods continues to be a challenge. The goal is to develop a function or a subroutine that returns the curvature in computational cells containing an interface…

计算物理 · 物理学 2018-11-14 Yinghe Qi , Jiacai Lu , Ruben Scardovelli , Stephane Zaleski , Gretar Tryggvason

We propose ODTE, a new ensemble that uses oblique decision trees as base classifiers. Additionally, we introduce STree, the base algorithm for growing oblique decision trees, which leverages support vector machines to define hyperplanes…

机器学习 · 计算机科学 2025-03-18 Ricardo Montañana , José A. Gámez , José M. Puerta