Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A joint monitoring method based on lidar and video

A lidar and video technology, used in location-based services, closed-circuit television systems, and re-radiation of electromagnetic waves, which can solve the problems of inaccurate intrusion detection and high maintenance costs for radar and video surveillance systems

Active Publication Date: 2021-05-28
HARBIN INST OF TECH
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the shortcomings of the existing radar and video monitoring systems, such as high maintenance costs and inaccurate intrusion detection, and propose a joint monitoring method, device and system based on laser radar and video

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 joint monitoring method based on lidar and video
  • A joint monitoring method based on lidar and video
  • A joint monitoring method based on lidar and video

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0035] Specific implementation mode one: the joint monitoring method based on lidar and video in this implementation mode, such as figure 1 shown, including:

[0036] Step 1. Establish TCP communication with the lidar and send a measurement request;

[0037] Step 2, receiving the original information returned by the laser radar, and storing the original information in the data temporary storage queue;

[0038] Step 3, analyzing the partial message intercepted from the original information to obtain the distance measuring point information;

[0039] Step 4, performing thinning processing on the ranging points to obtain the thinned ranging points;

[0040] Step 5. Draw a depth image according to the thinned distance measurement points; the depth image has a selected monitoring area.

[0041] In this embodiment, firstly according to figure 2 The scanning principle of the laser radar can realize the monitoring function. This part includes three threads: data acquisition thre...

specific Embodiment approach 2

[0048] Specific implementation mode two: the difference between this implementation mode and specific implementation mode one is:

[0049] The thinning algorithm is the Douglas Peuker algorithm.

[0050]Since the lidar collects a large number of ranging points in the indoor environment, for example, when the angular resolution is 0.5° and the scanning range is 190°, the number of sampling points has reached 381. Compared with the typical geometric structure of the indoor environment, such as the wall It is too complicated for the straight line and even the curve of the body, which is not conducive to the real-time processing of data, and it is also inconvenient to observe. In fact, when processing vectorized data, there are often a lot of repeated data in the records, which brings a lot of inconvenience to further data processing. On the one hand, redundant data wastes more storage space, and on the other hand, the graph to be expressed is not smooth or does not meet the stan...

specific Embodiment approach 3

[0056] Specific implementation mode three: the difference between this implementation mode and specific implementation mode one or two is: after step six, it also includes:

[0057] Step 7: Obtain the video signal of the camera, and display the video signal, the depth image and the target's motion track in the same interface

[0058] The advantage of this setting is that the monitoring personnel can obtain two kinds of monitoring information at the same time, which increases the convenience and the monitoring effect is more intuitive. Video surveillance can use industrial cameras to collect video, use x264 compression coding for video coding, and use error-free control UDP for video packet transmission in the LAN. The flow chart of the video surveillance process is as follows: Figure 4 shown.

[0059] Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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 present invention relates to a joint monitoring method, device and system based on laser radar and video, which belongs to the field of radar monitoring systems. The present invention solves the shortcomings of existing radar and video monitoring systems, such as high maintenance costs and inaccurate intrusion detection. A joint monitoring method, device and system based on lidar and video is proposed. The method of the present invention includes: establishing TCP communication with the laser radar, sending a measurement request; receiving the original information returned by the laser radar, and storing it in the data temporary storage queue; parsing part of the messages in the original information to obtain the distance measuring point information; The ranging points are thinned to obtain the thinned ranging points; the depth image is drawn according to the thinned ranging points; the sensitive area is selected in the depth image according to the user's input information; the measured area in the selected sensitive area is detected Whether the number of distance points exceeds the preset threshold, if so, it is considered that there is a target intrusion, and the trajectory of the target is drawn according to the moving distance point, and an early warning signal is issued.

Description

technical field [0001] The invention relates to a combined monitoring method, device and system based on laser radar and video, belonging to the field of radar monitoring systems. Background technique [0002] With the development of the information society and the improvement of living standards, people put forward higher requirements for the informatization and automation of regional security. Compared with the previous purely human surveillance methods, such as guards, patrols, security camera surveillance personnel, etc., the automated surveillance system with the help of digital sensors and computer networks has many advantages. With the help of digital sensors, surveillance systems gain wide coverage and high positioning sensitivity. [0003] Traditional video surveillance works poorly in low-light and no-light environments. Lidar is an active radar that does not require the assistance of ambient light. Therefore, the use of Lidar can make up for the lack of video su...

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): H04L29/06H04L29/08H04N7/18H04W4/02G01S17/88
CPCG01S17/88H04L67/025H04L69/163H04N7/18H04W4/029
Inventor 马琳房天阳徐玉滨
Owner HARBIN INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com