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vio_slam_try's Introduction

背景

本项目是以VINS-Mono为基础代码,移除ROS及Ceres依赖,使用自定义的图优化后端进行系统初始化和后端优化。图优化后端的部分代码参考VINS-Courseg2o

相对参考代码的变化点

<相对VINS-Mono>

  1. 本项目是VINS-Mono的简单实现,不包括闭环检测模块,只实现系统初始化和视觉&IMU融合定位等基础功能。
  2. 本项目不依赖ROS和Ceres优化库。
  • 使用自定义结构体代替ROS进行image和imu消息发布。
  • 使用pangolin代替rviz绘制轨迹。
  • 使用自定义的图优化后端代替Ceres进行优化。

<相对VINS-Course>

  1. 将LM算法独立出来并追加接口,方便后期扩展。
  2. 修改节点和边的部分接口函数,调整先验信息的导入导出方式。
  3. 系统初始化模块也使用自定义图优化后端完成,彻底移除Ceres依赖。

系统界面

UI

测试结果

将复现系统与VINS-Mono(不开启闭环检测)进行对比测试,结果如下:

  1. 精度(RMSE)处于同等水平。<-- 因为采用与VINS-Mono相同的耦合和优化策略。
  2. 实时性稍差。 <--自定义图优化后端没有进行加速处理,优化速度较慢。

<详细结果>
数据集: EuRoc MH公开数据集
评估工具: evo

  • RMSE
    RMSE

  • 轨迹
    traj
    traj
    traj
    traj
    traj

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