中国科学院机构知识库网格系统: 检索

Invariant Extended Kalman Filtering for Tightly Coupled LiDAR-Inertial Odometry and Mapping 期刊论文 OAI收割
IEEE-ASME TRANSACTIONS ON MECHATRONICS, 2023, 页码: 12
作者: Shi, Pengcheng; Zhu, Zhikai; Sun, Shiying; Zhao, Xiaoguang; Tan, Min

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收藏 | 浏览/下载：74/0 | 提交时间：2023/03/20

Laser radar Feature extraction Simultaneous localization and mapping Robustness Point cloud compression Optimization Kalman filters Invariant extended kalman filter (EKF) light detection and ranging (LiDAR)-inertial odometry multisensor fusion localization state estimation

Gaussian limit for determinantal point processes with J-Hermitian kernels 期刊论文 OAI收割
SCIENCE CHINA-MATHEMATICS, 2022, 页码: 16
作者: Lin, Zhaofeng; Qiu, Yanqi; Wang, Kai

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收藏 | 浏览/下载：39/0 | 提交时间：2023/02/07

determinantal point process J-Hermitian kernel linear statistics central limit theorem translation-invariant kernel

A Coarse-to-Fine Registration Approach for Point Cloud Data with Bipartite Graph Structure 期刊论文 OAI收割
ELECTRONICS, 2022, 卷号: 11
作者: Yuan, Munan; Li, Xiru; Cheng, Longle; Li, Xiaofeng; Tan, Haibo

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收藏 | 浏览/下载：69/0 | 提交时间：2022/03/21

point cloud coarse-to-fine registration top-tail (TT) strategy bipartite graph matching 3D scale-invariant feature transform (3D SIFT) fast point feature histograms (FPFH) trimmed iterative closest point (TrICP)

Survey of Spatio-Temporal Interest Point Detection Algorithms in Video 期刊论文 OAI收割
ieee access, 2017, 卷号: 5, 页码: 10323-10331
作者: Li, Yanshan; Xia, Rongjie; Huang, Qinghua; Xie, Weixin; Li, Xuelong

收藏 | 浏览/下载：76/0 | 提交时间：2017/07/21

Video spatio-temporal interest point (STIP) local invariant feature STIP detection algorithm

A novel fully automatic scheme for fiducial marker-based alignment in electron tomography 期刊论文 OAI收割
JOURNAL OF STRUCTURAL BIOLOGY, 2015, 卷号: 192, 期号: 3, 页码: 403-417
作者: Han, Renmin; Wang, Liansan; Liu, Zhiyong; Sun, Fei; Zhang, Fa

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收藏 | 浏览/下载：55/0 | 提交时间：2019/12/13

Electron tomography Alignment Point set registration Four point invariant

A shape context based Hausdorff similarity measure in image matching 会议论文 OAI收割
5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Infrared Imaging and Applications, Beijing, June 25-27, 2013
作者: Ma TL(马天磊); Liu YP(刘云鹏); Shi ZL(史泽林); Yin J(尹健)

收藏 | 浏览/下载：62/0 | 提交时间：2013/12/26

The traditional Hausdorff measure, which uses Euclidean distance metric (L2 norm) to define the distance between coordinates of any two points, has poor performance in the presence of the rotation and scale change although it is robust to the noise and occlusion. To address the problem, we define a novel similarity function including two parts in this paper. The first part is Hausdorff distance between shapes which is calculated by exploiting shape context that is rotation and scale invariant as the distance metric. The second part is the cost of matching between centroids. Unlike the traditional method, we use the centroid as reference point to obtain its shape context that embodies global information of the shape. Experiment results demonstrate that the function value between shapes is rotation and scale invariant and the matching accuracy of our algorithm is higher than that of previously proposed algorithm on the MEPG-7 database.

The structure on invariant measures of C (1) generic diffeomorphisms 期刊论文 OAI收割
ACTA MATHEMATICA SINICA-ENGLISH SERIES, 2012, 卷号: 28, 期号: 4, 页码: 817-824
作者: Sun Wen Xiang; Tian Xue Ting

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收藏 | 浏览/下载：31/0 | 提交时间：2021/01/14

UNIFORM HYPERBOLICITY Generic property invariant measure and periodic measure hyperbolic basic set topologically transitive irregular point

图像特征匹配研究 学位论文 OAI收割
工学博士, 中国科学院自动化研究所: 中国科学院研究生院, 2011
作者: 樊彬

收藏 | 浏览/下载：70/0 | 提交时间：2015/09/02

特征描述特征匹配重复性纹理直线匹配点线不变量旋转不变性光照不变性 feature description feature matching repetitive patterns line matching line-point invariant rotation invariance illumination invariance

Ridge extraction of a smooth 2-manifold surface based on vector field 期刊论文 OAI收割
COMPUTER AIDED GEOMETRIC DESIGN, 2011, 卷号: 28, 期号: 4, 页码: 215-232
作者: Che, WuJun; Zhang, XiaoPeng; Zhang, Yi-Kuan; Paul, Jean-Claud; Xu, Bo

收藏 | 浏览/下载：48/0 | 提交时间：2015/08/12

Implicit surface Invariant feature Line of curvature Parametric surface Principal curvature Principal direction Ridge Umbilical point Vector field

Research of automatic test technology of parameters used in a dual-CCD TV measure-system (EI CONFERENCE) 会议论文 OAI收割
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 2, 2005 - November 5, 2005, Zian, China
作者: Wang L.; Li Y.; Li Y.; Li Y.; Li Y.

收藏 | 浏览/下载：45/0 | 提交时间：2013/03/25

This paper describes a kind of automatic test technology of the parameters used in a dual-CCD TV measure-system (TV -MS) .The TV -MS is the ground control equipment of the anti-tank missile and integrates the technologies of optical machine and electronics. It is important and key component. The main technical parameters of the TV -MS are field of view zero point precision sensitivity anti-jamming ability zooming time and focus time etc. To insure the TV -MS satisfying the tactical and technical requirements and discover fault and reason a fast and accurate equipment satisfying the test technical parameters of the TV -MS is urgently needed in manufacture and service. Firstly the parameter test system converted optical signal to electronic signal implemented automatic control of the invariant illumination of parallel pipeline output. Secondly data and command delivering displaying or printing are realized by using 80C196KB. The experiment result shows that the approach of automatic testing of the Parameters used in a dual-CCD TV -MS is successful and it can be used for all tests of the functions and parameters of the TV -MS. The main innovations are to realize the fast veracious measure of technical parameters of the dual-CCD TV-MS and integrate the technologies of optics machineries and electronics. An advanced means is provided to judge the technical states find malfunctions and discover the reasons in producing and maintaining process. The equipment suited for anti-tank missile systems is given.