Results 31 to 40 of about 2,474,612 (263)

Improved IMU Preintegration with Gravity Change and Earth Rotation for Optimization-Based GNSS/VINS

open access: yesRemote Sensing, 2020
IMU preintegration technology has been widely used in the optimization-based sensor fusion framework, in order to avoid reintegrating the high-frequency IMU measurements at each iteration and maintain the ability of bias correction when bias estimation ...
Junxiang Jiang, Xiaoji Niu, Jingnan Liu
doaj   +1 more source

Automated 3-D Retinal Layer Segmentation From SD-OCT Images With Neurosensory Retinal Detachment

open access: yesIEEE Access, 2019
Neurosensory retinal detachment (NRD) is a separation of the neurosensory retina from the retinal pigment epithelium (RPE) because of the subretinal fluid that can result in significant vision loss.
Loza Bekalo   +8 more
doaj   +1 more source

Incremental 3-D pose graph optimization for SLAM algorithm without marginalization

open access: yesInternational Journal of Advanced Robotic Systems, 2020
Pose graph optimization algorithm is a classic nonconvex problem which is widely used in simultaneous localization and mapping algorithm. First, we investigate previous contributions and evaluate their performances using KITTI, Technische Universität ...
Feng Youyang, Wang Qing, Yang Gaochao
doaj   +1 more source

A survey of two-dimensional graph layout techniques for information visualisation [PDF]

open access: yes, 2012
Many algorithms for graph layout have been devised over the last 30 years spanning both the graph drawing and information visualisation communities. This article first reviews the advances made in the field of graph drawing that have then often been ...
Vickers, Paul, Gibson, Helen, Faith, Joe
core   +1 more source

Visual-Based Position Estimation for Underwater Vehicles Using Tightly Coupled Hybrid Constrained Approach

open access: yesJournal of Marine Science and Engineering
A tightly coupled hybrid monocular visual SLAM system for unmanned underwater vehicles (UUVs) is introduced in this paper. Specifically, we propose a robust three-step hybrid tracking strategy.
Tiedong Zhang   +6 more
doaj   +1 more source

Optimal graph Laplacian

open access: yesAutomatica, 2019
This paper provides a construction method of the nearest graph Laplacian to a matrix identified from measurement data of graph Laplacian dynamics that include biochemical systems, synchronization systems, and multi-agent systems. We consider the case where the network structure, i.e., the connection relationship of edges of a given graph, is known.
openaire   +2 more sources

Rubbling and optimal rubbling of graphs

open access: yesDiscrete Mathematics, 2009
A pebbling move on a graph removes two pebbles at a vertex and adds one pebble at an adjacent vertex. Rubbling is a version of pebbling where an additional move is allowed. In this new move one pebble is removed at vertices v and w adjacent to a vertex u and an extra pebble is added at vertex u. A vertex is reachable from a pebble distribution if it is
Christopher Belford, Nándor Sieben
openaire   +4 more sources

The complexity of combinatorial optimization problems on d‐dimensional boxes [PDF]

open access: yes, 2007
The Maximum Independent Set problem in d-box graphs, i.e., in intersection graphs of axis-parallel rectangles in R-d, is known to be NP-hard for any fixed d >= 2.
Chlebikova, Janka   +3 more
core   +1 more source

Graph Optimization Model Fusing BLE Ranging with Wi-Fi Fingerprint for Indoor Positioning

open access: yesSensors, 2022
To improve the user’s positioning accuracy of a Wi-Fi fingerprint-based positioning algorithm, this study proposes a graph optimization model based on the framework of g2o that fuses a Wi-Fi fingerprint and Bluetooth Low Energy (BLE) ranging technologies.
Rong Zhou   +3 more
doaj   +1 more source

Non-heuristic reduction of the graph in graph-cut optimization [PDF]

open access: yes, 2012
During the last ten years, graph cuts had a growing impact in shape optimization. In particular, they are commonly used in applications of shape optimization such as image processing, computer vision and computer graphics.
Malgouyres, François, Lermé, Nicolas
core   +4 more sources

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