Unlock instant, AI-driven research and patent intelligence for your innovation.

A method for indoor pedestrian positioning and tracking without maps

A pedestrian and map technology, applied in surveying and navigation, navigation through speed/acceleration measurement, navigation and other directions, to achieve the effect of saving storage space and calculation amount, and high positioning accuracy

Active Publication Date: 2021-06-08
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the existing indoor autonomous positioning and tracking technology cannot realize portable autonomous positioning and tracking while ensuring accuracy, and proposes a method for indoor pedestrian positioning and tracking without a map

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for indoor pedestrian positioning and tracking without maps
  • A method for indoor pedestrian positioning and tracking without maps
  • A method for indoor pedestrian positioning and tracking without maps

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] Exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the implementations shown and described in the drawings are only exemplary, intended to explain the principle and spirit of the present invention, rather than limit the scope of the present invention.

[0040] An embodiment of the present invention provides a method for locating and tracking indoor pedestrians without a map, such as figure 1 As shown, the following steps S1-S5 are included:

[0041] S1. Collect video data and inertial navigation data during the indoor movement of pedestrians, and perform preprocessing on the video data and inertial navigation data.

[0042] Step S1 includes the following sub-steps S11-S12:

[0043] S11. Walking indoors with a smartphone held vertically (realized by researchers in the embodiment of the present invention), the camera of the smartphone is used to collect video data durin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for locating and tracking indoor pedestrians without a map. By fusing video and inertial navigation data, the movement of pedestrians is described as a semantic trajectory, and at the same time, a simple semantic description map is established according to the video data, and a semantic description map is established. Matching relationship with the semantic description trajectory, so as to match the two, so as to correct the original pedestrian trajectory, and realize autonomous positioning and tracking without a map. The present invention starts from the results of positioning and tracking, focuses on the final effect of positioning, and can find the position of pedestrians in the established semantic map, which belongs to a relative positioning method. The present invention only needs to store descriptive maps instead of three-dimensional scene graphs, which greatly saves computing and storage space, can be used on lightweight smart devices, and can also be used in indoor environments with variable scenes. with broadly application foreground.

Description

technical field [0001] The invention belongs to the technical field of indoor positioning, and in particular relates to the design of an indoor pedestrian positioning and tracking method without a map. Background technique [0002] In recent years, with the development of concepts and technologies such as smart cities, smart medical care, and smart campuses, indoor positioning services have increasingly become an indispensable technology for the construction of smart cities. With the development of sensor technology for smart phones, using smart phones to achieve indoor autonomous positioning will become the main goal of indoor positioning services. Indoor positioning technology that does not require the deployment of additional equipment such as mobile phones, the inertial navigation system is its core technology, which relies on the inertial measurement unit (Inertial Measurement Unit, IMU) composed of inertial sensors to achieve autonomous positioning, but the IMU inheren...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/16G01C21/20G01C21/00
CPCG01C21/005G01C21/165G01C21/206
Inventor 阎波张丽佳韩浩楠肖卓凌
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA