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In optimization-based image restoration models, the correct selection of hyperparameters is crucial for achieving superior performance. However, current research typically involves manual tuning of these hyperparameters, which is highly…

最优化与控制 · 数学 2026-04-03 Hang Xie , Xuewen Li , Peili Li , Qiuyu Wang

We present a novel universal gradient method for solving convex optimization problems. Our algorithm, Dual Averaging with Distance Adaptation (DADA), is based on the classical scheme of dual averaging and dynamically adjusts its…

最优化与控制 · 数学 2026-04-22 Mohammad Moshtaghifar , Anton Rodomanov , Daniil Vankov , Sebastian Stich

We consider the problem of reorienting a rigid object with arbitrary known shape on a table using a two-finger pinch gripper. Reorienting problem is challenging because of its non-smoothness and high dimensionality. In this work, we focus…

机器人学 · 计算机科学 2019-12-06 Yifan Hou , Zhenzhong Jia , Matthew T. Mason

Determining the position and orientation of a calibrated camera from a single image with respect to a 3D model is an essential task for many applications. When 2D-3D correspondences can be obtained reliably, perspective-n-point solvers can…

计算机视觉与模式识别 · 计算机科学 2019-06-19 Dylan Campbell , Lars Petersson , Laurent Kneip , Hongdong Li , Stephen Gould

Coordinate-wise minimization is a simple popular method for large-scale optimization. Unfortunately, for general (non-differentiable) convex problems it may not find global minima. We present a class of linear programs that coordinate-wise…

最优化与控制 · 数学 2020-09-15 Tomáš Dlask , Tomáš Werner

This paper introduces a novel double regularization scheme for bilevel optimization problems whose lower-level problem is composite and convex, but not necessarily strongly convex, in the lower-level variable. The analysis focuses on the…

最优化与控制 · 数学 2026-02-06 Mattia Solla , Johannes O. Royset

We propose an inexact Uzawa algorithm with two variable relaxation parameters for solving the generalized saddle-point system. The saddle-point problems can be found in a wide class of applications, such as the augmented Lagrangian…

数值分析 · 数学 2014-08-26 Kazufumi Ito , Hua Xiang , Jun Zou

Global point cloud registration is essential in many robotics tasks like loop closing and relocalization. Unfortunately, the registration often suffers from the low overlap between point clouds, a frequent occurrence in practical…

机器人学 · 计算机科学 2023-07-25 Zhijian Qiao , Zehuan Yu , Huan Yin , Shaojie Shen

Planning long-horizon robot manipulation requires making discrete decisions about which objects to interact with and continuous decisions about how to interact with them. A robot planner must select grasps, placements, and motions that are…

This work studies the problem of maximizing a higher degree real homogeneous multivariate polynomial over the unit sphere. This problem is equivalent to finding the leading eigenvalue of the associated symmetric tensor of higher order,…

最优化与控制 · 数学 2019-10-02 Yuning Yang , Guoyin Li

Prior panorama stitching approaches heavily rely on pairwise feature correspondences and are unable to leverage geometric consistency across multiple views. This leads to severe distortion and misalignment, especially in challenging scenes…

计算机视觉与模式识别 · 计算机科学 2026-03-13 Zhengdong Zhu , Weiyi Xue , Zuyuan Yang , Wenlve Zhou , Zhiheng Zhou

The alternating direction method of multipliers (ADMM) has been applied successfully in a broad spectrum of areas. Moreover, it was shown in the literature that ADMM is closely related to the Douglas-Rachford operator-splitting method, and…

最优化与控制 · 数学 2024-01-10 Renyuan Ni

Expansion of natural gas networks is a critical process involving substantial capital expenditures with complex decision-support requirements. Given the non-convex nature of gas transmission constraints, global optimality and infeasibility…

计算工程、金融与科学 · 计算机科学 2015-06-25 Conrado Borraz-Sanchez , Russell Bent , Scott Backhaus , Hassan Hijazi , Pascal Van Hentenryck

This paper addresses the Graph Matching problem, which consists of finding the best possible alignment between two input graphs, and has many applications in computer vision, network deanonymization and protein alignment. A common approach…

机器学习 · 统计学 2024-08-12 Ernesto Araya Valdivia , Hemant Tyagi

Real-time motion planning is a vital function of robotic systems. Different from existing roadmap algorithms which first determine the free space and then determine the collision-free path, researchers recently proposed several convex…

机器人学 · 计算机科学 2019-03-01 Chaoyi Sun , Qing Li , Li Li

The purpose of this paper is to propose and analyze a multi-step iterative algorithm to solve a convex optimization problem and a fixed point problem posed on a Hadamard space. The convergence properties of the proposed algorithm are…

泛函分析 · 数学 2018-02-28 Muhammad Aqeel Ahmad Khan , Hafiza Arham Maqbool

In the point set embeddability problem, we are given a plane graph $G$ with $n$ vertices and a point set $S$ with $n$ points. Now the goal is to answer the question whether there exists a straight-line drawing of $G$ such that each vertex…

计算几何 · 计算机科学 2020-05-13 Tanaeem M. Moosa , M. Sohel Rahman

Existing panoramic layout estimation solutions tend to recover room boundaries from a vertically compressed sequence, yielding imprecise results as the compression process often muddles the semantics between various planes. Besides, these…

计算机视觉与模式识别 · 计算机科学 2024-08-30 Zhijie Shen , Chunyu Lin , Junsong Zhang , Lang Nie , Kang Liao , Yao Zhao

In this paper, we propose a new algorithm to speed-up the convergence of accelerated proximal gradient (APG) methods. In order to minimize a convex function $f(\mathbf{x})$, our algorithm introduces a simple line search step after each…

机器学习 · 统计学 2014-06-19 Ziming Zhang , Venkatesh Saligrama

Point cloud registration aligns multiple unposed point clouds into a common reference frame and is a core step for 3D reconstruction and robot localization without initial guess. In this work, we cast registration as conditional generation:…

计算机视觉与模式识别 · 计算机科学 2026-03-17 Yue Pan , Tao Sun , Liyuan Zhu , Lucas Nunes , Iro Armeni , Jens Behley , Cyrill Stachniss