检索结果-南通市图书馆

Fast and accurate visual odometry from a monocular camera

Frontiers of Computer Science 2019年第6期13卷 1326-1336页

作者： Xin YANG Tangli XUE Hongcheng LUO Jiabin GUO School of Electronic Information and Communications Huazhong University of Science and TechnologyWuhan 430074China

This paper aims at a semi-dense visual odometry system that is accurate,robust,and able to run realtime on mobile devices,such as smartphones,AR glasses and small *** key contributions of our system include:1)the modified pyramidal Lucas-Kanade algorithm which incorporates spatial and depth constraints for fast and accurate camera pose estimation;2)adaptive image resizing based on inertial sensors for greatly accelerating tracking speed with little accuracy degradation;and 3)an ultrafast binary feature description based directly on intensities of a resized and smoothed image patch around each pixel that is sufficiently effective for relocalization.A quantitative evaluation on public datasets demonstrates that our system achieves better tracking accuracy and up to about 2X faster tracking speed comparing to the state-of-the-art monocular SLAM system:*** the relocalization task,our system is 2.0X∼4.6X faster than DBoW2 and achieves a similar accuracy.

关键词： visual odometry mobile devices direct tracking relocalization inertial sensing binary feature

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A gyroscope-based system for intraoperative measurement of tibia coronal plane alignment in total knee arthroplasty

引用

Medicine in Novel Technology and Devices 2022年第1期13卷 87-95页

作者： Michael A.Kokko Ryan M.Chapman Martin W.Roche Douglas W.Van Citters Thayer School of Engineering at Dartmouth College 14 Engineering DriveHanoverNH03755USA Department of Kinesiology College of Health SciencesUniversity of Rhode Island25 W.Independence WayKingstonRI02881USA Orthopedic Research Institute Holy Cross Hospital 4725 N Federal Hwy.FtLauderdaleFL33308USA

Coronal plane alignment in total knee arthroplasty(TKA)is an important predictor of clinical outcomes including patient satisfaction and device *** and computer assisted navigation are the two primary technologies currently available to surgeons for intraoperative assessment of alignment;however,neither is particularly well-suited for use in this increasingly high volume *** we propose a novel gyroscopebased instrument for intraoperative validation of tibia coronal plane alignment,and provide initial analytical and experimental performance *** gyroscope-based alignment estimate is derived from simplified joint geometry and verified experimentally using a custom tibial trial insert containing a consumer-grade inertial measurement unit(IMU).Average accuracy of the gyroscope-based tibia coronal angle estimate was found to be within1in mechanical leg jig and cadaver *** results indicate that the proposed gyroscope-based method shows promise for low cost,accurate intraoperative validation of limb alignment in TKA ***grating IMU technology into the TKA surgical workflow via low-cost instrumentation will enable surgeons to easily validate implant alignment in real time,thereby reducing cost,operating room time,and future revision burden.

关键词： Alignment Gyroscope inertial measurement unit inertial sensing Orthopedic procedures Prosthetics Total knee arthroplasty

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：